Th400 cracked bellhousing turbo

Aug 10, 2018 when the th400 in our c10 project bit the dust, we turned to an ati street rod package to replace it. We show you how to rebuild gms turbo 400 transmission specific to. The reid racing th400 transmission case, offered by hughes. The tech page will grow to be several articles about specific units and the specific mods and the reasons to do those mods. Two of the engines were cracked and the third was to nice a car to part out so i. Early model amc jeeps used an adapter plate to mate it with the gm bellhousing bolt pattern. Installing an ati th400 in our c10 project hot rod. While a cracked housing may put an end to your day on the trail, it certainly will not put an end to your. This is our turbohydramatic 400 fresh from hughes performance.

For almost a decade, performance automatic has produced an incredibly versatile line of pro fit bellhousings. I wouldnt say that its common for turbo hydramatic 400s to crack in the bellhousing area as there are millions of them in service, many behind very high horsepower. Cracked a th400 case and support brackets with a np205. The th400 is an automatic shift, threespeed, longitudinally positioned transmission. The lightduty turbo hydramatic 350 threespeed automatic arrived in 1969. Turbo 400 th400 heavy duty performance transmission 2wd. Ford bellhousing adapters th400 transmission type free. Jw performance ultra bell gm ls to th350th400 bellhousing 92451ls sfi certified add sfi certified safety with this ultra bell. We didnt just dig a th400 out of the junkyard and throw it in. The case, bellhousing, and tailhousing are cast from 356t6 cast aluminum. Home about store complete transmissions the wheel torque converters transmission accessories transmission components ultra components distributors contact.

Transmission ultra bell from summit racing equipment, broke out the cutoff wheel, and promptly made a mess on the garage floor. Aftermarket building techniques take it well past that figure. It launched good and i got told last time i had a tranny leak. These transmissions mate a threeelement turbine torque converter to a simpson planetary geartrain, providing three forward speeds plus reverse. The turbo 400 transmission, known officially as the turbohydramatic and commonly referred to as simply the th400, was part of a family of automatic transmissions developed and produced. Jw performance ultrabell bellhousing chevy, buick, pontiac. Jw performance competition th400 transmissions jegs. While a cracked housing may put an end to your day on the trail, it certainly will not put an end to your transmission. The new cast aluminum t400 supercase is the result of over 2 years of development.

Do not include the tailshaft housing which bolts to the rear of the case. The th400 street strip transmission 4 ts, the th400 full manual transmission 4 ts, and the th400 transbrake transmission 4 ts. This is an old draft of some th400 oil pump technical. Its almost cracked all the way around about 75% of the bellhousing and its cracked all the way through. Turbo 400 th400 transmission heavy duty performance 4. May 08, 2018 our turbo 400 had a cracked bellhousing, which hot rods by dean managed to save by welding and return into service.

Th400 street smart system transmission performance automatic. Performance automatics th400 can handle most crate engines today without a complaint. Jul 31, 2009 talking with a friend who does my tranny work, and he asks what all am i going to end up putting in it and have i considered going with the heavy duty case. I have a g body monte carlo that brakes the bell and soon the bank. Jw performance ultrabell bellhousing chevy, buick, pontiac, and oldsmobile to th350th400. Th400 bellhousing breaking2004 gto turbo ls1 youtube.

These transmissions are assembled in atis sfi case with an sfi mopar specific bellhousing. The novak guide to the gm th400 automatic transmission. This permits the adaptation of the gm 4l80e to small block, big block, and gen 3 hemi chrysler engines. Installing an ati th400 in our c10 project hot rod network. The supercase is an sfi certified transmission case for powerglide, turbo 400 and turbo 350 transmissions. This transmission does vary in the amount of fluid required, based on certain specifications such as which torque converter is used. This package facilitates the installation of the reid racing sfi bellhousings to a gm 4l80e transmission. Jw performance competition th400 transmissions were originally released in 1964 and are an ideal racing automatic transmission for hot rods to promods. Turbo 400 performance racing transmission parts by fti performance. Discussion in nonturbo tech questions started by jfive, mar 31, 2012. Bellhousing cracked all the way around, driveshaft then exploded in the middle.

Cracked a th400 case and support brackets with a np205 page 3. I pulled the one from the caddy for the second time and the. The turbo 350 case measures 21 34inches long from the front of the bellhousing to the rear of the case. Th400 turbo 400 performance racing transmissions fti. This is an old draft of some th400 oil pump technical information. Developed to eliminate all weak points found in the original gm transmission cases, the rugged ati supercase and bell housing are sfi approved for competition, and. Have you ever heard a knock or a rattle sound coming from under your bellhousing. It is widely regarded to be a supremely durable and legendary transmission. Mine cracked all the way around and was dumping atf all over. Models mating ford or chrysler v8 to powerglide eliminate adapter plates starter mounts to ultrabell. Introduced in 1964, the th400 is an automatic shift, threespeed, longitudinally positioned transmission. If you have a high performance th400 transmission, you.

Well today my friend called me and wanted me to pull him out he was stuck in the mud so i go over and try to pull him out it wasnt working so i snatched him and finally got him out later once i started driving down the road i heard a rattling noise pulled over to take a look and my transmission bell housing is cracked all the way around anyone know where i can get another one and why it. The updated design was developed to eliminate all of the crack. Lets talk about th400 trans to 4 speed conversions august 16th, 2011, 08. This cracked cause the convertor bolts backed out, and one of them got pinched inbetween the bellhousing and the convertor and hence the crack. Performance transmissions 92451 ultrabell for th400. The th400 street strip transmission 4 ts, the th400 full manual transmission 4 ts, and the th400. The turbo 400 has been used in jeeps from the factory. Apr 05, 2018 ls bell housing heres an install video for a ultra bell housing. The turbo forums the discussion board for both hard core and beginner turbocharged vehicle enthusiasts. Oct 15, 2014 this is what it sounds like when your bellhousing on a th400 cant take 650 hp anymore lol.

Although we use the build levels and options below, each transmission is. Jun 07, 2010 the gm factory officially refers to a 400 trans as a turbo hydramatic th and it first appeared in the gm lineup back in 64. Vehicleengine search vehicleengine search makemodel search. This is our turbo hydramatic 400 fresh from hughes. You need an adapter to get a th400 to bolt up to an ls motor properly. Starting with the best cores available performance automatic works its magic with. The turbo 400 arrived in most chevrolet vehicles in 1965 and in the corvette in 1968. All of those fixes rewarded with years and thousands upon.

Well today my friend called me and wanted me to pull him out he was stuck in the mud so i go over and try to pull him out it wasnt working so i snatched him and finally got him out later once i started driving down the road i heard a rattling noise pulled over to take a look and my transmission bell housing is cracked. Section a disassembly and inspection of the oil pump figure 10a1 is the master schematic of the oil pump and related components. All of my th400s and ive had several all leaked at the converter to case seal and no, replacing the seal doesnt fix it. How to repair a th400 transmission with a cracked bellhousing. It will crack the case or the bellhousing the first time you leave hard. The th400 also suffers from the same problem, but doesnt break until the 800 hp mark. I wouldnt say that its common for turbo hydramatic 400s to crack in the bellhousing area as there are millions of them in service, many behind very high horsepower engines, offroad vehicles, etc.

Ati racing transmissions th400 drag racing transmissions. Ls bell housing heres an install video for a ultra bell housing. Dynamic builds the very best racing transmissions anywhere. I pulled the one from the caddy for the second time and the trans shop guy took pity of me and fixed what was really wrong the front pump has to come out and the converterfront pump bushing has to get fixed, then reassembly and a new front seal. I had a guy weld up the th400 case and he did a good job. I found rotten jellied mounts under the adapter and that probably contributed to excess bouncing and stress on the trans case. The th400 transmission from general motors is one of the most popular and widely used transmissions in the racing and rodding industry. Climbed under the car and found the crack in the bellhousing. Our turbo 400 had a cracked bellhousing, which hot rods by dean managed to save by welding and return into service. Adapter plates 322 buick to chev t 400 transmission aaca forums. Transmission shops that know what they are doing are few and far between here. May, 2018 we did encounter one problem with our turbo 400 case and that was a cracked bellhousing, which was repaired by hot rods by dean before it went to hughes. Designed inhouse at ati, and cast here in the usa, and machined at ati on 4axis horizontal cnc. The standard gm bellhousing bolt pattern is used on each transmission, so its no problem to bolt.

Turbohydramatic or turbo hydramatic is the registered tradename for a family of automatic transmissions developed and produced by general motors. Jw performance ultra bell gm ls to th350th400 bellhousing. We have automatic shifting th400s in turbocharged applications approaching. Heck, it even had a jw ultrabell fitted when the original bellhousing cracked. How to identify a turbo 350 or turbo 400 transmission it. The motor is a small block 350 a classic muscle car motor. So far the only problem i have had was a cracked bellhousing. Bellhousings th400 transmission type free shipping on. I currently run a 350 turbo that i paid 450 bucks for. Our stage 2 th400 includes all the components in the stage 1 rebuild but is upgraded to a 34 element sprag and the corresponding direct drum, 6 clutch direct with carbon based frictions, 4 clutch intermediate, manualautomatic valve body or forward pattern full manual upon request. All bte th400 transmissions have been dyno tested to ensure proper operation. What makes this bellhousing so unique is that it is part of the performance. Th350th400 frequently asked questions ls1tech camaro.

Th400 transmission, turbo 400 transmission, th400 monster. I had the dust cover removed, and it was just unfortunate that it had to get wedged and form the crack. The bellhousing on the th400 is a bit on the thin side and prone to failure. Our stage 2 th400 includes all the components in the stage 1 rebuild but is upgraded to a 34 element sprag and the corresponding direct drum, 6. The turbo 400 measures 24 38inches long from the belllhousing to the rear of the case.

I run a np205 transfer case now with a fixed yoke after the weld repair. The first in this series was the pro fit small block ford pa26577. Diagrams supplied by general motors and atsg have been noted and are the property of the credited entity. All of my th400 s and ive had several all leaked at the converter to case seal and no, replacing the seal doesnt fix it. I had a cracked th400 case about 6 inches forward of the tail end of the trans case tail end. When building a high performance 3speed transmission, the direct drum is one of the most important components to upgrade reliability, safety, and performance can all be improved. Where over 30 years building racing transmissions gives you the winning edge. What could cause a crack in the bellhousing in a th30 auto. Turbo 400 overfilled symptoms the stovebolt forums. One of the reasons we got to this point was because i was telling him that i plan on overbuilding if there is such a thing the transmissio. Jun 09, 2009 what could cause a crack in the bellhousing in a th30 auto. When the th400 in our c10 project bit the dust, we turned to an ati street rod package to replace it.

Th400 sfi bellhousing dynamic racing transmissions. Small block ford 289, 302, 351wc and 300 series i6. Transmission tech info the purpose of the transmission tech page is to provide free accurate information pertaining to gm automatic transmissions. Building a drag race turbo 400 with hughes performance.

Building a bulletproof turbo 400 with ati performance. I dont know if anyone makes a bellhousing type adapter in us. Buick developed the 400 turbo trans, using it first in the 65 and 66 rivs. The appropriate flexplate, crank adapter and required bolts are also included so a standard gm converter with a small bolt circle drops right in. Just rebuilt a th400 for my project sounds like low oil pressure to me i am no expert but thats the common thing between all the symptoms you can get to the pressure relief. The th400, or turbo 400, transmission was a 3 speed. In the turbo hydromatics category, we have several th400 versions to choose from. Th350 turbo hydromatic 3speed automatic transmission. Th400 specs, info, and identification drivetrain resource. The unit shown is the most common junkyard or swapmeet. I have a 3500rpm stall converter and the car ran slow. That being said, a common fill volume is between 1112 quarts for a stock transmission. Lets talk about th400 trans to 4 speed conversions. May 22, 2018 the bellhousing on the th400 is a bit on the thin side and prone to failure.

Often, broken engine or transmission mounts are the contributing factor to th400 bellhousing cracks. Upgrading the turbo 400 in your corvette super chevy. The turbo 400 was introduced in 1964 in buick and cadillac cars and in chevrolet and. It also came in a chevrolet bellhousing bolt pattern version, a long tailshaft version, and even a model with a smaller output shaft. Has anyone ever had a problem braking the bellhousing on their auto trans. We begin of course, with the entire assembly broken down in an exploded. This bellhousing is certainly a stronger improvement and has sfi rating. These strongerthanstock housings bolt to the front pump and fit underneath stock floors. Mega monster transmissions engineered to dominate, the turbo 400mega monster transmission is ideal for. Pretty straight forward install just take your time. When our th400 bellhousing opened up, grand canyonstyle, we ordered up a j. Fti offers a wide variety of th400 parts including racing transmisison pumps, valve bodies, gear sets and deep. Please excuse us while were in the process of building our new web store. This transmission does vary in the amount of fluid required, based on certain specifications such as which torque.