Th400 Highway Rpm

Could not run with traffic on the highway unless you liked high RPM. Performance Automatic 574615 TH400 Torque Converter, 2600-3000 Stall. ) Tire diameter in inches (24. A whopping 30% reduction. To Change the Settings you Push the Knobs in and Turn, No More Jets to Change No Fluid loss. I flushed the transmission and did tune up bout 5-6 months ago, been checking the fluid periodically not until recently did it seem foamy cuz it has bubbles in it and showing way past the hatchmarks. For the Tire field, enter your tire diameter in inches. 75 overdrive. Favourite +5. 1 of 2 Go to page. I'm building a '79 4x4 dually with a turbo 400 transmission and I'm putting a '89 454 in it, the truck is just gonna be used for towing a couple vehicles at a time, I'm wanting to get all the horsepower and torque out of this engine that is possible and still drive on the road with no problem, I plan on stroking it but I just don't no what size to go with so my questions are. in them, along with heavy duty pickups, usually 3/4 ton or larger trucks. The MGA 1600-MK-II (about 87 hp) had top speed around 103 mph at 5650 rpm with the 4. This was our first LS1 to TJ swap a few years ago and what was so challenging then has become second nature and we documented. This series of torque converters enables transmissions to run cooler and reduces engine RPM at highway speeds. I have sought out many options. One way to improve this without having to completely change over. Find many great new & used options and get the best deals for TCI BreakAway Torque Converter 1965-91 GM TH350 TH400 2400-2600 RPM Stall 11" at the best online prices at eBay! Free shipping for many products!. Borg Warner T-10 Close 4sp early. The GEAR VENDORS in combination with the Powerglide is an affordable, reliable, and very efficient package. That is because the 400 torque converter has more bottom end torque multiplication, and you will benefit lower cruise rpm & fuel mileage. I just got my new dash installed and the speedometer wired and calibrated. what transmission is the best to use for hotrodin i have been told the 700R is good but has a lot of problems with it but i want overdrive so i can cruise on the highway without having a lot of high RPM s or would i be better runing the 350 turbo and not have any problems i have two transmissions i have a 700 R and i have a 350 lockup so guys let me know what would be the best transmission to. Chief RPM is shown with two different physical appearances in Cars; he is colored yellow the first time he is seen in the film, whereas he is colored white throughout the. However, it did not prevent the owners of Nissan 300ZX, Nissan 350Z, Ford Mustang, Infiniti G35, etc. When I put my truck in drive and step on the gas the RPM's go up to 3,000 but my MPH will stay at 10-15. The TH400 is conservatively rated at 450 ft. Turbo 400 will do a 1-2-3 shift with it disconnected. Or, change input variables (engine RPM, axle gear ratio and tire height) to determine vehicle speed in each forward gear. Engine RPM at cruising speed should be maintained between 1800 to 2100 RPM. The smaller pinion size creates less tooth contact and greater gear tooth strain. 6l90 Tuning 6l90 Tuning. This allows the transmission to operate more efficiently at higher RPM. (I'm now running 5500. -comp cams pushrods-isky roller tappets-steel roller (delta) cam-comp cams steel rocker arms-msd ignition-custom headers. You have the extra torque of a good, mild 383, so you shouldn't have to wind the rpms up too far. International Full Size Jeep Association > Tire Kickin' > General FSJ Tech > 400 turbo shift point adjustments. The th-400 needs a conversion U joint to mate the slip yoke to the driveshaft. TCI 251801 PRO-X TH400 4000 Stall Converter. It's especially quieter during rapid acceleration when a gas engine would be buzzing away at 5000 rpm while the TDI is loafing along at 3000. Assuming you're using stock size tires, 3. This little paw engine only had the Torque-power hi rise dual plane, 11 to 1 compression on pump 98 and 250 duration @. Here are the specifications for the 1978 Corvette:. Aftermarket building techniques take it well past that figure. The TH400 is a three speed transmission. It is a lot easier to find someone to build a turbo 400. When new, the transmission was likely programmed to upshift just past 5,000 rpm at full throttle. Cruising speed shouldn't be over 3000 rpm, with closer to 2500 rpm preferred (especially with an OD trans -- might have to run closer to 3000 with the original style three speed auto or three/four speed manual). Multiply those RPM's by the overdrive ratio to see what RPM's would be with a new trans. With the engine you have, I really don't see a problem with power or acceleration with 4. com The Online Motorsports Superstore sells auto racing safety equipment, auto racing Hans Device, auto racing helmets, auto racing suits, auto racing gloves, auto racing parts, race car parts, Necksgen head and neck restraints, Racing Helmet, Racing Helmets, Snell Rated Helmets, Snell Approved Helmet, Snell Certified Helmet, Snell Helmet, Snell Rated Helmet, Snell Rated Helmets. It seemed like a perfect time to show how good the rpm is now. 27 automatic, 3. 21) to go highway speeds. Newer TH350s use a lock-up torque converter. Rialto Ave. This seems a bit high for the TH400 with stock P235 tires. Bolt Circle Diameter: 11. I'm building a '79 4x4 dually with a turbo 400 transmission and I'm putting a '89 454 in it, the truck is just gonna be used for towing a couple vehicles at a time, I'm wanting to get all the horsepower and torque out of this engine that is possible and still drive on the road with no problem, I plan on stroking it but I just don't no what size to go with so my questions are. It was just 50 RPM! So I stomped the go pedal, the RPM shot up by another 350, for a total of 400. and it is an easy install to replace a TH350. 41:1, with 205-75R14 tires did 23 MPG with a best of 26 mpg!. This case likely occurs in case your vehicle stalls on inclines. ADV 50-6304 - $525. I had a TH400 and loved it. Common ratios in Jeeps include: 3. I wrote this calculator in the early 2000s to help me figure out the ratio on my '77 K10 Silverado (35" tires and 8" lift, auto trans and NP205 transfer case). I'm not familiar with the 63 Catalina, but if it's a complete pumpkin like a 9" ford, then the bonus is you don't have to pay a mechanic to set up the gears. The main difference in the LT1 is the reverse cooling design, which cools the cylinder heads first, then the block. 37 long and comes in at a weight of 135 pounds dry. I will be running 4. 00 ratio and a TH 400 with a brake. 73 rear ends gets 7 mpg with a 475 ISX. The higher the engine RPM, the greater the potential speed at the cost of fuel, heat, friction and engine longevity. The Converter Control Knob Has 6 Settings to Adjust the Converter Pressure. My warmed over 1625cc engine with big valve head and fast street cam may be close to 100 bhp. 08 rear end out of a police caprice or 94-96 impala is a good fit because its has 3. 0L Turbo Camaros with the LTG engine. 55's I don't think I'll like the 3. They are bullit proof transmissions but if you do a lot of highway driving your rpm's will be up there, and your gas milage will suffer. Lous got 4,000 rpm from with a 4. 08 gears and th400 between speeds of 60-70 on the way back from myrtle beach. improve this question. The modulator is connected to the engine through a combination of steel tubing and rubber hoses. 42 is better for MPG if you do highway driving, while 4. Turbo-Hydramatic or Turbo Hydra-Matic is the registered tradename for a family of automatic transmissions developed and produced by General Motors. 10 gears with the turbo 350 my dad ahs a 72 nova with a turbo 350 trans and 3. 04-25-2004, 08:34 AM. This was our first LS1 to TJ swap a few years ago and what was so challenging then has become second nature and we documented. I recently purchased a 1984 P-30 step van: 6. On main roads or highways, I'd be at 3000 rpm around 60 mph. 11 is pretty much the standard gear ratio for 33" tires. I think the DeVilles from 70-74 had the 2. craigslist provides local classifieds and forums for jobs, housing, for sale, services, local community, and events. It's a TH400. 93 rear end, and the 75 and 76 had a 2. know potential. With the correct gear choice and tire size having no OD is a non issue. " Super Street Raptor Torque Converter 700R4 2004R" Fits 700R4, 200-4R and non-LS1 4L60E transmissions (1982-1997). No matter what you're driving, we have the right Th400 Transmission for your automobile. I have been looking at the same option as you. Upgrade your Camaro to 300 horsepower and 330 torque with the RPM-Motorsports Stage 1 tune. 08 gears and a TH400 presumably. Go 70-80 and the RPMs will be around 2400-2700. Now try a set of 35's on for size. At running temp IAC reads 5% in neutral. What are the hp losses through a Turbo 400? Many have tried to approximate the answer to this question. 7 gets about 16. 1988 Chevrolet C/K 2500 - CarGurus. I honestly think my car is faster with the 400 but i have no back to back data. Turbo-Hydramatic or Turbo Hydra-Matic is the registered tradename for a family of automatic transmissions developed and produced by General Motors. Lous got 4,000 rpm from with a 4. Add to Wishlist. than a TH350 but this heavy duty factor was designed more for heavy vehicles that may encounter pulling heavy loads. A higher gear ratio offers greater fuel economy on the highway, and a lower ratio will be less efficient. When they go bad the converter will not be able to lock when going down the highway. For the Tire field, enter your tire diameter in inches. A good rebuilt 700r4 can be had for less than $400. I've gotten my car up to 135 with little trouble. It was awful when heading to dragstrip or car show that was 20-30 miles away. Or, change input variables (engine RPM, axle gear ratio and tire height) to determine vehicle speed in each forward gear. 11 would be my vote, but if the Jeep doesn't see many highway miles, then 4. Alright heres my situation. THE PROBLEM: 70 MPH highway speed equals 2300+ RPM. 75:1 4th gear. I was wondering if it was possible to setup an output to activate the kickdown on the TH400? I don't see anything specifically for this, but was thinking maybe I could use the Secondary Fuel Pump output, and utilize whatever throttle position I wanted to activate the TH400 switch. It seems that the gears are slipping and causing the rpm’s to climb up. 4L80E vs TH400 Gearing. OK, on item #1. Refundable core charge for acceptable transmission core is $175. 04-25-2004, 08:34 AM. At highway speed, the RPM is simply too high to maintain a sensible compressor cycle. The following equations and calculators will estimate the resultant vehicle speed at a known engine rpm for a manual transmission with up to six forward gears. TH400, or generally, a muscle car. @tobroketoretire The tires are 245/60R15-100S front and back. Hurst and B&M makes both. How to Determine Gear Ratio. 30's in my Cobra and have had no problems with highway driving - this includes 3 hour drives to New Hampshire, and Connecticut each year. My Ram 1500 with 4. than a TH350 but this heavy duty factor was designed more for heavy vehicles that may encounter pulling heavy loads. Borg Warner T-10 Wide 4sp early. This answer is applicable for many BMWs in addition to the one listed below. 89 cubic inches. TCI 240901 TH350/TH400 Breakaway Torque Converter 65-91 with Anti-Ballooning Plate 2200-2600 RPM Stall. To determine the distance the vehicle will travel for one revolution of the engine by dividing the circumference of the tire by the combined gear ratio of the transmission and differential. I have a1969 chevelle I bought that was under constuction. I looked at going to a 342. Right now I am turning 3300 rpm at 60 mph. and it is an easy install to replace a TH350. The 700R4 is a 4 speed automatic transmission, with a 30% overdrive in 4th gear. #N#Click the button for unit you want to solve for. The RPM at approximately 60 MPH with the 4. There is also the 4L80E. The TH400 automatic transmission is designed for Corvette big-blocks with engines rated up to 400 hp. Shift points in this truck are probably occuring at 2500 - 3000 rpm on the average with a TH400 and 4. 7 effective low-rpm ratio), and you get serious stump-pulling power!. 73 gears and regear the transmission, the 42's will lower your highway rpm by about 370 RPM @ 65MPH. 6 axle, but unless I change rear axle ratios, the TH-400 will stay in place. I have a serpentine conversion kit, Oversized electric fan and oversized 4 ROW radiator and my temps went up too. My jeep is a 99' sport 4. They are bullit proof transmissions but if you do a lot of highway driving your rpm's will be up there, and your gas milage will suffer. Given the "E" designation, both of these gearboxes feature electrically-controlled lock up torque converters for lower cruising RPM and increased fuel efficiency. 5" Part # 282251801. In this situation, the engine. 73's- anyone running a th400 daily ? with 2. Scroll through the list of popular transmissions to find yours. You need the RPM for the cam but running along a 2800 rpm on the highway gets old fast. i dont have to drive alot on the freeway,but still want a few opinions from people who are driving a th400 daily with a 4000 stall. The overall First gear ratio with the TH400 and. Did anyone catch the "4. My jeep is a 99' sport 4. When you get into pulling that long hill and cylinder temperatures hit the roof, detonation will set in. Alright, my RPM's at 70mph are at 2500 in fifth gear! This seems a little odd as my camaro V6 rode at just under 2 grand, my silverado V6 ran at just over 2 grand, and my jeep gc hemi ran below two grand at 70, I figured that with the V8 it wouldn't be working as hard to run the speed limit. This GV works great goes in overdrive at 47 mph in auto mode or you can go to manual mode and overdrive all the gears making it a six speed. ATI offers Low Gear Sets for most popular 3-speed transmissions. 00 Select options; DNJ-D-CF2 68RFE 2007 Up and 45RFE or 545RFE 1999 to 2011 Leak Proof Billet Aluminum Valve Body Plate $ 527. The engine really starts getting into the torque curve above 2000, so it sounds like a 2500 stall should be the best compromise since it will let me launch on the torque curve and still hit the highway with the converter fully engaged, right?. My 73 with 3. than a TH350 but this heavy duty factor was designed more for heavy vehicles that may encounter pulling heavy loads. Re: TH400 not shifting till 4,000 rpm « Reply #14 on: January 18, 2011, 01:28:29 AM » Yes. My 02 sierra does the same thing, at high RPM the voltage drops off randomly. GM TH400 Automatic Transmission. At 70 I was turnning about 2700 rpm which isnt too bad for highway crusing (kept me from speeding alot too lol). What you need are 3. Step Van, 105 HP @ 2,500 RPM, COMPLETE REMANUFACTURED TRUCK ENGINE [LMRO Turbo, 3. But as they're almost brand new, we'll get the correct size next year. Description: Used 1931 Ford Tudor for sale - $36,995. First consideration was to install a 700R4 with overdrive but didn't want to loose the beefy TH400. Reverse gear is 2. It has a 355 CI Blown engine with a Crane Roller Cam, 488 spooled rear end, four link suspension, B&M TH 400 Automatic. Turbo 400 will do a 1-2-3 shift with it disconnected. Adam Wartell Lifetime Member C3VR Founder Send Private Message Eagleville, PA - USA Vette(s): Used to own a 1979 Corvette now owned by JB79 Joined: 11/1/2001 Posts: 15403. Now try a set of 35's on for size. The crawl ratio is the number of rotations your engine makes before your tires make one full turn. According to the calculators on the Randy's Ring and Pinion website (www. When you get into pulling that long hill and cylinder temperatures hit the roof, detonation will set in. While these transmissions are respected for their durability and versatility, there always comes a point where the old transmission shows signs of wear. Tire Size/Gear Ratio Calculators. With my old 904 I was at 3200 rpm at 55 mph and 4000 rpm at 70. Discussion. If you know your gear ratio then this doubles as a Vehicle Speed Calculator. The pan is secured with 13 bolts. about two weeks ago the speedometer started acting funny (the gear selector indicator light would turn off and the spedo and tach would go up approx 20 deg, after a few seconds the indicator light would come back on then the spedo and tach would dip way down then come back up to correct), now the shift indicator light. Granted I have more power than most but I have ran 5. In 1969 a heavy-duty version of the Turbo 400 became available for the L71 (435 hp), L88 (430 hp), and L89 (L71 with aluminum. Thank you for all the replies; this is the input I was looking for. When combo’d with their Hot+2 ET Race Xcelerator programmer, all that you’ll need to get that Duramax running is hook up a couple grounds, find 12V constant power, turn the key on, hit that start signal, and you’re good to go. Raise the rpm slightly over idle. Features a 2. While it was fun around town. PART# 20412 Be the first to write a review. Like was said earlier, if you’re driving a ‘burb mileage problably isn’t your 1st priority. This number is probably low because what we're not taking into consideration in this formula is torque converter slippage. But, another safe way to get a reading that will be within 100 to 200 rpm, is to have a manually-shifted automatic transmission, or a way to hold it in high gear (1:1 ratio). Just type in your info, press calculate, and you'll get the right gear ratio without the guesswork. I am considering converting my current fixed pitch TH400 over to variable pitch in the near future. Rialto Ave. The gear ratio makes a whopping. Turbo-Hydramatic or Turbo Hydra-Matic is the registered tradename for a family of automatic transmissions developed and produced by General Motors. 75 overdrive. 37 long and comes in at a weight of 135 pounds dry. Alright heres my situation. Most notably, the VVT-i system brought the peak torque down 400 rpm, making the car much more fun to drive around the street. A real good balance of go versus highway rpm is a 3. My '70 has the 2. 08 x 336 / 28. Muscle Car Image Gallery. Borg Warner Wide 4sp '74 up. [Archive] TH400 Question General FSJ Tech. 1988 Chevrolet C/K 2500 - CarGurus. After all, my previous 1978 Camaro LG3, TH350, 1200 rpm stall, 2. Nissan RB26DETT engine reliability, problems and repair. moses42ak · Registered. Sruka-the kickdown is electric and it works fine going down the highway it is just when it comes to a stop. Could not run with traffic on the highway unless you liked high RPM. Why can't the transmission be geared to run in top gear, 75 MPH, 2500 RPM? Wouldn't this result in reduced wear and increased fuel economy?. It is a heavy-duty version of the 6L80 six-speed automatic, with a. The history of Grand Am starts with Pontiac executives noting incursion into the US market by Mercedes and BMW. Be prepared to have screamin' RPM's if you get on the highway if you go with either of the two! Patrick '56 F100; Must. Shift points in this truck are probably occuring at 2500 - 3000 rpm on the average with a TH400 and 4. 1931 Ford Tudor Selling my 1931 ford tudor it’s on a so cal Chassis with a Currie 9 inch turbo 400 and 1968 327 with tri power motor and trans both have low miles the hole chassis was completely pulled apart and powder coated all brakes redone steering box rebuilt body was. So I feel like its on borrowed time and I need to either contact you guys about picking up a 4L60E or put my TH400 in it , I do love my overdrive but a TH400 is a TH400 so I better do something though because having a disappearing reappearing first gear is probably a sign that the end is near for my slush box. Reason im asking is i dont want to be going 65 or 70 down the highway and pushing 3000 - 4000 rpm cause the TH400 isnt beffy enough to handle the cummins. A "step above" factory. But, another safe way to get a reading that will be within 100 to 200 rpm, is to have a manually-shifted automatic transmission, or a way to hold it in high gear (1:1 ratio). 78 to 1 ratio allows you to go to a numerically higher rear gear to improve your 60ft. Our fuel-efficient Maximizer ™ High Torque Towing Converter is designed to reduce the slippage found in all non lock-up torque converters. 55 with my tire size at 70mph will have me growling down. The correct prop and gear selection for your power can be found with some testing. It weighs a substantial 12 pounds, and in First gear, it must counter rotate at 85 percent of engine rpm. The 4L80E has an overdrive gear with a ratio of 0. Re: How hard to get 400 hp out of a 400 pontiac engine. 73 gears in my 79 400 4sp TA. This is a superior alternative for most cars thinking of going to a Th400. The VVT-i system added 40 horsepower, and 40 lb-ft of torque. The Modulators must be very sensitive to small amounts of vacuum because they will lower the shift point ~1500 rpm even at WOT over being disconnected. It runs good but the only problems is it shifts at 2800-3000 rpm even at WOT. TH350 side view with short tail housing. You will be running in higher RPMs and may initially be afraid of it, but it doesnt hurt the car. 00 ratio and a TH 400 with a brake. Advanced Adapters GM 4WD Th350 3 Speed Automatic Transmission to Jeep Dana 300 Adapter Kit. The only problem, at highway speed the RPM was not desirable. All specifications, performance and fuel economy data of Buick Custom Sportwagon 400-4 V-8 TH-400 (257. Here are the specifications for the 1978 Corvette:. 10" rear and "highway speeds" part of that. 312 inches by 3. Very dark red or black transmission fluid is an indication that the transmission is burning the fluid for getting too hot from either overloading or slipping gears. 5:1 in a towing motor. ViewLine Onyx ViewLine Black 120 MPH 3-3/8" Speedometer with GPS. The truck is located in PA which is about 4 1/2 hours from my house. A fairly common highway cruising speed is 75 MPH. 88:1 gears, 35" T'birds, daily highway use w/ occasional towing and a highway rpm of about 2750-3000 rpms. the armored car was loosely related to the Spähpanzer Luchs and is a part of the TH-200 family. From these calculations, you can see just how much change in RPM an engine will experience with simple tire height and gear ratio changes. Find many great new & used options and get the best deals for TCI BreakAway Torque Converter 1965-91 GM TH350 TH400 2400-2600 RPM Stall 11" at the best online prices at eBay! Free shipping for many products!. Making sure you get the right converter is more than if it fits between the engine and transmission. RPM Act Introduced in Congress Aims to Protect Americans' Right to Build Race Cars Make it legal for you to do whatever you darn well please with your non-road car. This number is probably low because what we’re not taking into consideration in this formula is torque converter slippage. 73 RPM seems high for 65 MPH. GREAT on the highway. Note: be aware that "Chevy" style TH-400 with a short tailpiece are getting rare. The lockup converter allows me to have a high stall and cruise on the highway. There is a tiny adjustment screw in the modulator to adjust upshift points. 73 102 4L80E - 4. Horsepower, Torque and Displacement The LS2 was rated at 400 horsepower at 6000 RPM, while rated torque is 400 lb-ft at 4400 RPM. Q: What does kickdown mean in an automatic transmission? A: Kickdown is a downshift in an automatic transmission triggered when the driver pushes the car's accelerator to the floor. There are aftermarket gears available, a 2. know potential. there is a rod that comes down from the steering column, then across to the transmission. You have the extra torque of a good, mild 383, so you shouldn't have to wind the rpms up too far. 56 axle in my 37 Buick street rod, and a TH-400 trans. Wep TH400Plus comes with features of High printing speed of 250 mm/sec, High Quality printing of 203 DPI ,Print head life of 150 km. The Turbo 400 transmission, known officially as the Turbo-Hydramatic and commonly referred to as simply the TH400, was part of a family of automatic transmissions developed and produced by GM. 563 Hwy 20 W, Fenwick, ON L0S 1C0, Canada. 1A USB Inverter. The higher the engine RPM, the greater the potential speed at the cost of fuel, heat, friction and engine longevity. Or, what parts would be needed to beef up a TH400 to TH475 specs? I'm doing a rebuild. I was wondering if it was possible to setup an output to activate the kickdown on the TH400? I don't see anything specifically for this, but was thinking maybe I could use the Secondary Fuel Pump output, and utilize whatever throttle position I wanted to activate the TH400 switch. Foreign makes mixed these. It is widely regarded to be a supremely durable and legendary transmission. Master Cylinders and Brake Accessories. My hunch has been confirmed. That is because the 400 torque converter has more bottom end torque multiplication, and you will benefit lower cruise rpm & fuel mileage. While it was fun around town. My old Honda CRX Si was geared to run at 3000 RPM at 100 km/hr (62 mph). I checked vacum to the modulator and was working fine (all new lines). just add more gas and try to start it for a bit to get the gas going again When you require full. This number is probably low because what we’re not taking into consideration in this formula is torque converter slippage. An overdrive gear of this nature on the 200-4R is equivalent to a low RPM when one is driving down a highway. I picked up absolutely nothing in 1/4 mile times vs the 3. The advantage of the lock-up is it is more efficient on the highway. I run a turbo 400 in my car. Also, the engine RPM reduction quiets down the drivetrain, has less heat buildup, and provides a comfortable long highway cruise. Qty: Add to Wishlist. It has a 355 CI Blown engine with a Crane Roller Cam, 488 spooled rear end, four link suspension, B&M TH 400 Automatic. Dennys Street Rod Driveshafts are custom built and high speed high rpm balanced in your choice of Steel or Aluminum. When should a Turbo 400 be considered over using the Turbo 350? Generally a Turbo 400 is preferred when the motor is producing more than 500hp and greater bottom end torque. if your going to change out the trans get one with an overdrive and adjustable shift points via the controller. 0l with the auto tranny , that would be the 3 speed '32rh' model I really didn't buy this thing to do alot of highway driving and it seem in third gear on the highway its running kind of high in the rpms roughly 3,000 rpm's at 65 mph. He appears in Cars, coaching Winford and his team in the Dinoco 400 race at the Motor Speedway of the South. This rpm is often MUCH higher than you would thinklike 5k or so. If I had the choice to order my car with a powerglide or TH350, I'd pick the TH350 because, I'd have a lot better acceleration. I flushed the transmission and did tune up bout 5-6 months ago, been checking the fluid periodically not until recently did it seem foamy cuz it has bubbles in it and showing way past the hatchmarks. 97 first gear instead of OEM 2. 56 behind a 305 and TH350C. For gear calculating I use www. I am thinking about getting an M1009 CUCV, with 3. For those of you who didn't follow my build post, I put a GM 200R4 tranny in my Dart Sport. I didn't think 4. ADA Racing Yamaha 701 81mm 35cc Dome (185psi - 91 Octane) YA2135L. Response Number 1: Name: fred ont canada Date: February 23, 1998 at 10:02:21 Subject: Torque Converter -- Bad Vibrations? Reply: Bob what you are discibing is a mechanical vibration has nothing to do with pressure. ) Tire diameter in inches (24. The Eldorados had a 3. My '75 vintage TH400 transmission is behind a fresh Cad 500 in my 4x4 which use for a trail rig (1st gear crawling) and some towing. i dont have to drive alot on the freeway,but still want a few opinions from people who are driving a th400 daily with a 4000 stall. 11 in my 73 'Vette with around 385-400 horses. Could not run with traffic on the highway unless you liked high RPM. I purchest a 12 bolt rear. There is a tiny adjustment screw in the modulator to adjust upshift points. This is because the higher a gear ratio is, the fewer revolutions the engine has to make to achieve a desired speed. At 70 I was turnning about 2700 rpm which isnt too bad for highway crusing (kept me from speeding alot too lol). The EGR valve, alternator, or fuel pump gets faulty. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Re: TH400 not shifting till 4,000 rpm « Reply #14 on: January 18, 2011, 01:28:29 AM » Yes. Introduced in 1964, the TH400 is an automatic shift, three-speed, longitudinally positioned transmission. In mechanical engineering, a gear ratio is a direct measure of the ratio of the rotational speeds of two or more interlocking gears. 42 gears and runs 3000 RPM at 70 mph , perfectly acceptable for my engine. 08 gears and th400 between speeds of 60-70 on the way back from myrtle beach. My dad told me to go with 3. Check it out below! Click here to check out The Muscle Car Place's Podcast #138: Wiring the Chevelle with Jeff Allison and Ron Francis Wiring! #N#Click the logo to. Our fuel-efficient Maximizer ™ High Torque Towing Converter is designed to reduce the slippage found in all non lock-up torque converters. com or at Office Depot). 97 first gear instead of OEM 2. com or at Office Depot). Response Number 1: Name: fred ont canada Date: February 23, 1998 at 10:02:21 Subject: Torque Converter -- Bad Vibrations? Reply: Bob what you are discibing is a mechanical vibration has nothing to do with pressure. Share this post. Same as a Dodge 727. 48 and third is 1. 2s in this jeep with the same gearing and tire size and it always did well. With the majority of street cars that are driven daily we build have stall converters ranging from 2,400 to 3,500, with no problem being street. They have an aluminum case and. I'm running M22 and 4. 90 with a TH400. For "normal service" (which means mostly highway driving, NOT short trip city stop-and-go traffic driving), the scheduled maintenance intervals for changing the engine oil and filter range from 3,000 to as much as 7,500 miles, with the time interval being up to one year. what rear gears to run with. The GEAR VENDORS in combination with the Powerglide is an affordable, reliable, and very efficient package. when towing my fifth wheel in overdrive the torque converter will unlock as I approach a grade. But as they're almost brand new, we'll get the correct size next year. It's a favorite with Carr's Chevy 502 and 572 customers. I'm not familiar with the 63 Catalina, but if it's a complete pumpkin like a 9" ford, then the bonus is you don't have to pay a mechanic to set up the gears. At running temp IAC reads 5% in neutral. DRAG RACING Powerglide. The ranger overdrive bolts between a GM 4speed bellhousing and the stock LC 4speed transmission. 55's in my 65 442 (stock rear) in favor of the 3. Had an 81 pickup with a 2. Overdrive trannies sometimes have 3. The reason is the TH400 is a strong transmission and I get to keep everything the way it is (as far as the inside of the car goes). My problem is the trans shifts at 3800 RPMs. 0L Turbo Camaros with the LTG engine. They don't feel right on the highway, too high RPMs for my taste and MPG is horrible, I got less than 18MPG. Take the th350 sell it before you break it & get a turbo 400. I just got my new dash installed and the speedometer wired and calibrated. The Converter Control Knob Has 6 Settings to Adjust the Converter Pressure. View Full Version : 400 turbo shift point adjustments. It was designed with a three-element turbine torque converter mated to a epicyclic planetary geartrain, thus delivering three forward speeds plus reverse. Reason im asking is i dont want to be going 65 or 70 down the highway and pushing 3000 - 4000 rpm cause the TH400 isnt beffy enough to handle the cummins. GM TH400 Automatic Transmission. The ratio is. An automatic transmission, also called auto, self-shifting transmission, n-speed automatic (where n represents its number of forward gear ratios), or AT, is a type of motor vehicle transmission that automatically changes the gear ratio as the vehicle moves, meaning that the driver does not have to shift the gears manually. This little paw engine only had the Torque-power hi rise dual plane, 11 to 1 compression on pump 98 and 250 duration @. All New Patent Pending " Converter Boss" Has Two Knobs. For the Tire Height field, enter. The only complaint I have is the lack of overdrive. 36 gear ratio would drive on the street. The Turbo 350 has been used in many GM cars and some Chevy Blazers. Seems pretty tough and popular. The battery has died. Using a TH400 as an example, First gear is 2. At the moment I have a 1983 K5 6. In other words, it is the perfect final drive ratio for attaining top speed. Dave followed that with, “For example, if you had 4. With your car rolling at 10. Automatic and Manual tunes available now!. Wep TH400Plus comes with features of High printing speed of 250 mm/sec, High Quality printing of 203 DPI ,Print head life of 150 km. Borg Warner T-10 Wide 4sp early. Combination: I have been working on the car for two years. Some options include the 11” street/strip torque converter , 10” street/strip torque converter , 12” street enhancer torque converter with racing torque converters like our 10” , 11” , 9” , 9. I have sought out many options. This series of torque converters enables transmissions to run cooler and reduces engine RPM at highway speeds. With your car rolling at 10. 1963-1973 3 speed models with Chevy engine. TH400, so it'll bolt right up to the TH400 transmission crossmember. I'm running M22 and 4. rpm = mph x gear ratio x 336 / tire diameter. The heavier a car is, the more load it will put on the torque converter when power is applied, causing it to flash at a higher speed. 6l90 Tuning 6l90 Tuning. So I swapped out the 3. Most of the buick guys I talked to seemed to like them. This car was run on regular fuel only. The basic purpose of installing a modified torque converter is to allow the engine (RPM) to increase to where the engine is making greater power before driving the wheels, thus allowing the vehicle to accelerate from a standing start much HOW TO SELECT THE RIGHT HIGH STALL CONVERTER Manufactured In-House by TCS Products Toll Free: 1-800-960. 10 gears,,,,and I can cruise at 55 mph on the highway at only 2,700-2,800 rpms, with a 28 inch tall tire,,,it's not that bad,,,,,not sure where Mr. The th400 doesnt have overdrive so you'll be at high RPM on the highway if you go too high of gears. This series of torque converters enables transmissions to run cooler and reduces engine RPM at highway speeds. In mechanical engineering, a gear ratio is a direct measure of the ratio of the rotational speeds of two or more interlocking gears. I picked up absolutely nothing in 1/4 mile times vs the 3. Go 70-80 and the RPMs will be around 2400-2700. We are buying another truck for multipurpose use, highway and off highway work. Turbo-Hydramatic or Turbo Hydra-Matic is the registered tradename for a family of automatic transmissions developed and produced by General Motors. The TH400 is well known to be a heavier duty trans. This calculation is used to match oversize tires with new ring and pinion gears to obtain the desired engine RPM at highway speed. Dennys Street Rod Driveshafts are custom built and high speed high rpm balanced in your choice of Steel or Aluminum. They're a bit to big for the car and the speed rating is way to low. What are the hp losses through a Turbo 400? Many have tried to approximate the answer to this question. TH400 with Hurst street/strip shift kit and about a 2000 rpm stall converter. So I feel like its on borrowed time and I need to either contact you guys about picking up a 4L60E or put my TH400 in it , I do love my overdrive but a TH400 is a TH400 so I better do something though because having a disappearing reappearing first gear is probably a sign that the end is near for my slush box. The Camaro and Firebird share many of the same drivetrain components, particularly the rear axle assembly. In 1969 a heavy-duty version of the Turbo 400 became available for the L71 (435 hp), L88 (430 hp), and L89 (L71 with aluminum. happens its around 32-3300 rpms when it happens to me. When you change your tire size you need to make sure you have the right gearing to get optimal fuel economy and power. For any additional questions, please contact AutoZone Rewards Customer Service at 1-800-741-9179. It's offered in a single Premium Plus trim level, with an available Prestige package that adds a number of high-end features. Reverse gear is 2. 73's- anyone running a th400 daily ? Discussion in 'Non-Turbo Tech simple and strong as hell- i was thinking- a th400 with a 3000stall and t-brake with 2. My '75 vintage TH400 transmission is behind a fresh Cad 500 in my 4x4 which use for a trail rig (1st gear crawling) and some towing. 73 gears in my 79 400 4sp TA. I'm building a '79 4x4 dually with a turbo 400 transmission and I'm putting a '89 454 in it, the truck is just gonna be used for towing a couple vehicles at a time, I'm wanting to get all the horsepower and torque out of this engine that is possible and still drive on the road with no problem, I plan on stroking it but I just don't no what size to go with so my questions are. Lock Up vs. Listing of available engines is incorrect. Chief RPM is shown with two different physical appearances in Cars; he is colored yellow the first time he is seen in the film, whereas he is colored white throughout the. When new, the transmission was likely programmed to upshift just past 5,000 rpm at full throttle. Muncie Wide 4sp pre-'74. We took interest in Gear Vendorss when trying to figure out how tolower RPM in overdrive at highway speed. 1; 2; Next. As an Amazon Associate I earn from qualifying purchases. If you know your gear ratio then this doubles as a Vehicle Speed Calculator. APR's S3 K04 Turbo Conversion is now available for the B7 model generation Audi A4 2. My old Honda CRX Si was geared to run at 3000 RPM at 100 km/hr (62 mph). The drivetrains were durable for …. Approximate Stall Speed Range - 6000-9000 RPM Available for - TF 904, TF 727, TH 400, TH 350, TH 200, PG, C-4 and C-6. 74 nova with 3. Im looking into replacing my getrag 6 speed for a sp400 kit. After blowing up dozens of 200's, i love the confidence it gives me. 6 axle, but unless I change rear axle ratios, the TH-400 will stay in place. 070 overdrive , that can be compensated for by taking a little gear out of the rear end EXAMPLE if you have 3. 5 kW / 350 PS / 345 hp), edition of the year 1969 since September 1968 for North America U. ViewLine Onyx ViewLine Black 120 MPH 3-3/8" Speedometer with GPS. Wow, 600 hp on 33-35 inch tires is a lot! My understanding about torque converters is that this is where the heat in the trans is built and its caused by slipping. EPA estimated with 3. These transmissions mate a three-element turbine torque converter to a Simpson planetary geartrain, providing three forward speeds plus reverse. At 400HP, and as much torque across a broad RPM range, it had the impressive ability to plant the driver deeply into the seat. Install TH400 Or 200-R4 GM Overdrive Transmissions; Lower Engine RPM's At Highway Speeds; Improved Fuel Economy; Laser Cut From Structural Steel; MIG welded And Powder Coated; 1964-1967 Chevelle or Malibu is a standard American muscle car classic. I drove my truck from Louisiana back to North Carolina when I moved home. converter that can handle 800 hp, stalls at 2,800 rpm, yet still delivers efficient highway cruising at 1,800 rpm. TCI 240901 TH350/TH400 Breakaway Torque Converter 65-91 with Anti-Ballooning Plate 2200-2600 RPM Stall. 12 by your Jeeps tire diameter (Example:. 11 is pretty much the standard gear ratio for 33" tires. Corvette marked its silver anniversary for 1978 with a new fastback roofline that greatly increased luggage space, though the fixed glass meant you still had to load up from inside. The TH400, or Turbo 400, transmission was a 3 speed. Had an 81 pickup with a 2. Alot of new guys to hot rods are too use to overdrive transmissions and under 2,000 rpm highway speed. On my '83 CJ-7 that I drive everyday, my cruising rpm is about 2100 at 65mph. rpm = 72,441 / 28. I figured if I entered 26. They're a bit to big for the car and the speed rating is way to low. 30 rear gear and i have no problem taking it on the highway. Joined Mar 24, 2011 · 280 Posts. In addition to the resulting fuel mileage increases, the High Torque Towing Converter also lowers transmission temperature by as much as 20°F. This is because the higher a gear ratio is, the fewer revolutions the engine has to make to achieve a desired speed. The pan is secured with 13 bolts. To determine the distance the vehicle will travel for one revolution of the engine by dividing the circumference of the tire by the combined gear ratio of the transmission and differential. My 2016 Buick Lacrosse has been a pleasure to own. On a stock motor they'll be too much for highway driving. 050 and made 630hp at 6500 rpm and 580ft lb at 4700 rpm with carby. when towing my fifth wheel in overdrive the torque converter will unlock as I approach a grade. So I swapped out the 3. 70 in the LT-1, its a MONSTER off the line, but runs about 3000rpm at about 60MPH. 55's in my 65 442 (stock rear) in favor of the 3. The TH400 is an automatic shift, three-speed, longitudinally positioned transmission. Dave followed that with, “For example, if you had 4. 7 gets about 16. Rpms rev higher until switches gears and seems to coincide with a "winding" noise, happens even when idle but is worse on acceleration. Share this post. That being said, a common fill volume is between 11-12 quarts for a stock transmission. That should put me at about 2311 rpms at 75mph and 2619 rpms at 85mph. The higher the RGP ratio, the lower the top end speed but faster acceleration and more pulling power. rpm = 72,441 / 28. My '75 vintage TH400 transmission is behind a fresh Cad 500 in my 4x4 which use for a trail rig (1st gear crawling) and some towing. 78's yesterday in mild, (not cold), weather. For the Tire field, enter your tire diameter in inches. The vehicle performs very well on the highway with a smooth and very quiet ride due to the quiettune technology. 5" Part # 282251801. Borg Warner T-10 Close 4sp early. That would make my final drive ratio 10. Jump to Latest Follow 1 - 20 of 29 Posts. com has a mucie M22Z with a first gear of 2. For instance, if you have chest pain that […]. I looked at going to a 342. This is old school stuff and the 1:1 gear aint gonna. It was designed with a three-element turbine torque converter mated to a epicyclic planetary geartrain, thus delivering three forward speeds plus reverse. Gearing plays a part because as. My RPMs will go up from 2650 to around 2774 in 4th @ 60 but I it would help with the take off because my final drive ratio would go from 8. They had a # of custom props for the Kilo record. The manual for a TH400 seems to be better written - the TH400-S manual appears to have been copied from the TH400, but some excerpts were simplified and edited by a non-English speaker. We offer a plethora of Th400 Transmission for your vehicle needs. It weighs a substantial 12 pounds, and in First gear, it must counter rotate at 85 percent of engine rpm. For a street car the sooner it starts producing good torque (the low end of the rpm range) the better. 73's, TH350, and Protrac N50's on the rear (I think about 26" tall) and the rpm at 60mph was 3000. 48, scond gear is 1. This case likely occurs in case your vehicle stalls on inclines. Its fine for the street and I have drove that car from one end of Canada to the other so it works on the highway too but of course I was younger then so possibly I wouldnt like the it as much now on long drives. The same tire and RPM will give the following speeds based on the following gear ratio changes. Re: Lockup torque converter for a TH400? 02/15/2010 1:52 PM Put in a 4L60E or 4L80E with a stand alone controller. The car will roll at a lower RPM and may never reach 6000 RPM. The main and rod journal diameters and other features are. 08 gear when in OD but without the OD the engine will just RPM higher , my 78 has a TH-350 and 3. Showing 1 to 1 of 1 (1 Pages). Since there is. 0L I6 that it replaced. Hays Twister Full Race Torque Converter 1965-91 GM TH400, 4200-4500 RPM stall 9. I've recently switched to a 3:42 with a Turbo 400. A good rebuilt 700r4 can be had for less than $400. Engine RPM at cruising speed should be maintained between 1800 to 2100 RPM. 42" tires at 1,500 rpm. 73's and swapping the trans nets minimal change in the highway rpm and speed so all is good. Given the "E" designation, both of these gearboxes feature electrically-controlled lock up torque converters for lower cruising RPM and increased fuel efficiency. Although most vehicle transmission noises relate to internal parts and cannot be seen, their behavior and sound frequency always deal with a moving part according to engine rpm or pressure. 50 a gal gas you could save $1000 going from 10 MPG to 17 MPG in about 10,000 miles. 00 Select options; DNJ-D-CF2 68RFE 2007 Up and 45RFE or 545RFE 1999 to 2011 Leak Proof Billet Aluminum Valve Body Plate $ 527. 700R4 transmissions Engineering/Technical Car Forums Automotive Forums. of input torque. With my old 904 I was at 3200 rpm at 55 mph and 4000 rpm at 70. 70 in an automatic have any noticeable affect on performance and would it stress the automatic in the long run?. The torque converter multiplication and the 2. rpm = 72,441 / 28. Application: 1965-1981 GM TH350, TH375, and TH400 with small bolt pattern (Except. When they go bad the converter will not be able to lock when going down the highway. The shorter gearing allows a less-torquey engine to accelerate faster, and high RPMs at highway speeds is the tradeoff. EPA estimated with 3. i dont have to drive alot on the freeway,but still want a few opinions from people who are driving a th400 daily with a 4000 stall. I'm considering going to college 5+ hours away in the mountains, so highway speed will be important to me. I personally run a 400 turbo in my chevelle,,,with a loose Coan converter and 4. Q car year: 1988 car model: 528e Recently, after starting my engine, the RPM went to 3000-3200 and continued to run that high even after warming up. 73 1966 4L80E - 3. 6 axle, but unless I change rear axle ratios, the TH-400 will stay in place. 00 Add to cart; 1985 On 700R4 Humvee Transmission Swap Kit TH400 to a 700R4 Overdrive Transmission HMMWV H1 Hummer. Lous got 4,000 rpm from with a 4. Overdrive trannies sometimes have 3. The 4L80E keeps doesn’t drop the engine rpm as much between shifts because it is a heavy duty transmission and assumes that you could very well be pulling a load. Torque Converter, Street Master, 2,500 rpm Flash Stall, Heavy-duty Sprag, Chevy, TH350, TH400, Each ( 18 ) Part Number: HUP-GM25HD More Detail. 42 and Th400 has been from NJ to colo. ATI has T400 street rod and drag race transmssions for vehicles making 600 horsepower to 3,000 horsepower!. 36 gears in the Vert, not much freeway, around town is nice. It has a 355 CI Blown engine with a Crane Roller Cam, 488 spooled rear end, four link suspension, B&M TH 400 Automatic. The base V8 in the 442 was 400 cu in, 4bbl carb. Given the "E" designation, both of these gearboxes feature electrically-controlled lock up torque converters for lower cruising RPM and increased fuel efficiency. 1st gear is 2. My engine puts out about 450 rwhp and operates in up to 7000 rpm. it was initially offered to South-Africa but the South-African army decline the. Rialto Ave. Create a MyZone account. Engine RPM, or the speed at which the engine turns, can be calculated at any speed given the vehicle's tire size, axle ratio, and final transmission gear ratio. WeP TH400 Plus billing printer to the range of retail billing printers from WeP solutions Limited. This is because the higher a gear ratio is, the fewer revolutions the engine has to make to achieve a desired speed. Share on other sites. We will try to keep this short because high stall torque converters is a pretty involved subject. The Converter Control Knob Has 6 Settings to Adjust the Converter Pressure. First consideration was to install a 700r4 with overdrive but didn't want to loose the beefy TH 400. They had a # of custom props for the Kilo record. We ended up putting a switch in series with the lock-up relay and only used it out on the highway. Response Number 1: Name: fred ont canada Date: February 23, 1998 at 10:02:21 Subject: Torque Converter -- Bad Vibrations? Reply: Bob what you are discibing is a mechanical vibration has nothing to do with pressure. The heavier a car is, the more load it will put on the torque converter when power is applied, causing it to flash at a higher speed. WeP TH400 Plus billing printer to the range of retail billing printers from WeP solutions Limited. 08 gear when in OD but without the OD the engine will just RPM higher , my 78 has a TH-350 and 3. This thing runs nice on the highway but is a hog off the line absolutely no chance ever of spinning the tires. Add to Compare. I had a TH400 and loved it. This allows the transmission to operate more efficiently at higher RPM. 045 inch Firing Order 1-8-4-3-6-5-7-2 Idle Standard Engine, Manual Transmission: 700 RPM (In Neutral). I have been looking at the same option as you. The 3 speed turbo 400 trans is just fine, I'm never wanting for more power. Keep in mind that the highway cruise rpm needs to remain at or above the converter stall speed to prevent building excessive heat in the fluid. But now its going in my 80 that has a 500hp 383 th400 3000 converter. The TH400 is conservatively rated at 450 ft. com The Online Motorsports Superstore sells auto racing safety equipment, auto racing Hans Device, auto racing helmets, auto racing suits, auto racing gloves, auto racing parts, race car parts, Necksgen head and neck restraints, Racing Helmet, Racing Helmets, Snell Rated Helmets, Snell Approved Helmet, Snell Certified Helmet, Snell Helmet, Snell Rated Helmet, Snell Rated Helmets. EPA estimated with 3. Q car year: 1988 car model: 528e Recently, after starting my engine, the RPM went to 3000-3200 and continued to run that high even after warming up. It also seems to happen regularly if climbing even the slightest incline/hill. Transmission: TH-400.

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