The length of the unit can also tell you a few things. Pulled the pan off today. It shifts wonderful and I'm delighted to have been dealing with Monster Transmission. Cast-iron Hydra-Matic production ceased at Willow Run after the 1962 model year, and Controlled-Coupling Hydramatic ceased in early 1964, allowing retooling time for the Turbo Hydra-Matic 400, which debuted in the 1964 Cadillac models in mid-year, with Pontiac Division's Star Chief and Bonneville models being the last to use the Controlled-Coupling Hydramatic (Model HM315) of any GM car. The transmission identification number or source serial number (chassis VIN) is usually located close to the transmission code. Coverage limited to defects in material and/or workmanship of the specific part only. Older transmissions may leak from more than one location since the seals have aged and hardened. So, whether you are heading out to check out a "For Sale" ad that could be your next project or trying to make heads or tails of a junkyard find, the following charts can be useful guides when it comes to GM transmission identification. Turbo 400 is the biggest, Turbo 350s and Powerglides smaller. Powerglide Transmission Turbo Hydra-Matic . This is because the transmission lengths are the same and the positioning of the cross member can be easily modified, you only need to change the transmission mount, add transmission cooler lines, and update the shift indicator to a Turbo 350 pattern to complete the exchange. Clicking and squeaking that follows road speed changes may be caused by a universal joint. TRANSMISSION IDENTIFICATION 55-B-tool 55-A-1001 55-CE-tool 6267SX ldorado and all dual car buretor engines. The part codes that may be evident include the M33, M38 & M39 and these codes were for the conventional TH350. On the Turbo 350, the VIN will be stamped on either the drivers side housing (near the shifter), on the right side of the housing just above the pan, or on a boss behind the bell housing flange on the passenger side of the transmission. Through the 1950s, all makers were working on their own automatic transmission, with four more developed inside GM alone. "Hydra-Matic History: The First Automatic Transmission", "Exclusive: An Inside Look At Ford's New 10 Speed Transmission", "Ford and GM finally consummate 9- and 10-speed joint development", "Ford passes on GM's 9-speed automatic transmission", "GM Hydra-Matic 9T50 Transmission Confirmed for Chevrolet Cruze, Malibu, Equinox", https://en.wikipedia.org/w/index.php?title=List_of_GM_transmissions&oldid=1128819580, Short description is different from Wikidata, Creative Commons Attribution-ShareAlike License 3.0. It is also important to measure the length of the transmission. Dave Cruikshank is a lifelong car enthusiast and an Editor at Power Automedia. The Turbo 400 is the largest of the GM auto transmissions, but still surprisingly compact in light of the immense power they can handle. This was improved upon for all 1965 models with the "D L2 L1" or "D S L" quadrant, which allowed "dual range" flexibility as did the Dual-Range Hydramatic of 1953-1955. Are Hydra-Matic transmissions . The car would then start to move unless the transmission lever had been left in N, neutral. When in doubt, install a vacuum gauge at the vacuum modulator and check the vacuum signal and response. Therefore, work with us lets show you all you need to know about this unit. On the THM350, the VIN will be stamped on either the drivers side housing near the shifter, on the right side of the housing just above the pan, or on a boss behind the bellhousing flange on the passenger side of the transmission. The Turbo 350 quickly became known for its strength, versatility, and compactness. [3][4]. It was this version that replaced all Roto Hydramatic and Controlled-Coupling Hydramatic models in GM cars in that year, ending twenty-four years of four-speed automatic transmission production that obviated the need for a torque converter. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. It was a later version of GM's "dual-range Hydra-Matic", first introduced in some 1952 models. The 400 transmission has a main case of cast-aluminum alloy with a length of 24-3/8-inches long. YOU DO. Unfortunately, this makes transmission identification difficult to accomplish while the gearbox is installed in the vehicle. The TH700R-4 was the first overdrive automatic transmission used in GM cars and trucks in 1982, designated as a Hydra-Matic MD-8 transmission according to GM's RPO codes. hydra-matic 4l65-e . Parts only when consumer repaired or installed in non-highway application. Post-67 Example: P9E03 - (P = TYPE, 9 = year (1969), E = Month, 03 = Day of Month), Month code: (NOTICE this is NOT in alphabetic order) GM Turbo 400 TH400 Transmission 3 Speed Transmission. This modulator has been stationed at the transmissions side and there may be a rubber vacuum line connected to it. SKU H122. 2. This will Another quick way to identify a Turbo 400 is to look at the kick-down mechanism. Rebate form and details available at chevrolet.com/performance/offers. And if youre wondering how youll reduce the units friction, you can start by using needle roller bearings. THM200 - Light duty, "metric" 3 speed transmission. Automatic transmission types are generally identified by their pan shape. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. accelerator is pressed. Generally, gear or buzzing sounds may be caused by transmission gear failure or air in hydraulics, cooler line contact with body or frame, exhaust contacting body or Out of stock. THM400 - The THM400 was GM's Heavy-duty 3 speed transmission used from 1964 to 1990. MX3 Another Turbo 350 C code. Tags: Hydramatic , 1949 , 1955 , Cadillac 2004, 2005, 2009, 2012, 2015, 2016, 2017, 2019 Charlie Tranny. Trust us to steer you in the right direction, when you choose to DIY. Leaking booster. Transmission fluid that has come from an overheated transmission isn't generally red; it will appear dark brown or black as a result of being exposed to high temperatures. Hydramatic The Turbo 375 was a version of the transmission used from 1972 through 1976, in small displacement cars. This cookie is set by GDPR Cookie Consent plugin. Casting numbers on the case and extension housing. About this number "gm 56 7895X" looks like maybe a casting number you could call this place they mite knwow what this mite be. The 4L80E would be the "electronic" model. 2001 - 2022 Monster Transmission and Performance, All Rights Reserved. [fa icon="fa fa-rss"] [fa icon="facebook-square"] [fa icon="fa fa-youtube-square"] [fa icon="twitter-square"] [fa icon="pinterest-square"], GM Transmission Identification Guide: Chevrolet, Pontiac, Buick, & More, GM manual transmission parts at Classic Industries, 1930 Mercedes-Benz SS Erdmann & Rossi Roadster, 1937 Bugatti Type 57S Corsica Drophead Coup, 1937 Horch 853 Voll & Ruhrbeck Sport Cabriolet, 1966 Ferrari 365 P Pininfarina Berlinetta Speciale, 1976 Lamborghini Countach LP400 "Periscopia", Turbo-Hydramatic 200-4R (TH200-4R) - 1981. Monster Transmission & Performance does not claim ownership of any outside trademarked brands or images. Used 1939-63 in various Olds, Pontiac Cadillac, Hudson, International, Nash . V8 Oldsmobiles were automatic-only in 1949 as Oldsmobile lacked a manual gearbox that could handle the torque of the new Rocket V8 engine.1948 Oldsmobile Futuramic introduction. Summershandy. This is a 4 speed, overdrive unit. Therefore, you can carry out inexpensive changes to this transmission even without taking it out of the car. Post in the forum instead. The TH350 (Turbo-Hydramatic) transmission identification, decoding, and super-tuning are what sets it apart from other transmissions. There is no leaking coming from the front seals, rear sears or oil pan. Loosen band adjustment all the way. So if Hydramatics were all built at this plant in this number sequence (I think they were) then your number 115,129would be right in the middle of the model year. Hydra-matic transmission identification. Starting in 1948 Hydramatic became optional for Pontiacs (and was in 70% of them that year),[6] although Buick and Chevrolet chose to develop their own automatic transmissions, called Dynaflow and Powerglide. There are two significant variations of the Turbo 400. The Turbo 350 transmission was prevalent in nearly all GM, rear-wheel-drive cars and trucks through 1984. Introduced in 1939 for the 1940 model year vehicles, the Hydramatic was the first mass-produced fully-automatic transmission developed for passenger automobile use. Go here for Chevy Manual Transmission Identification. GM Turbo 350 and 350C (TH350 Transmission) 3 Speed Transmission. Upon shifting to third, the forward gear assembly went back into reduction, and the rear gear assembly locked. It was not as smooth as some competitors' transmissions (notably Buick's Dynaflow), but was more efficient, especially at highway speeds. It was phased out of use and superceded by GM's 700R4 starting in 1982. Item location . One more thing you can fall back on to identify the TH350 is the stampings placed on the transmissions side. This will depend on how hard the concerns that are engine performance related. THM375 - This transmission is a derivative of the THM400 sharing the external appearance of the 400. The Dual Range was introduced for the the shift since the vacuum signal to the transmission may be wide open throttle. Evolving by the pressure of industrial competition from other manufacturers such as Studebaker's three-speed lock-up torque converter co-designed by Detroit Gear (a division of Borg-Warner), named DG 200/250, and Packard's dual-range two-speed lock-up torque converter coupled Ultramatic, GM's Hydra-Matic underwent several revisions through 1955, before being gradually replaced by the substantially redesigned Controlled-Coupling HydraMatic (also called Jetaway, by Oldsmobile, and StratoFlight, and later Super Hydra-Matic, by Pontiac, or 315 HydraMatic, by Cadillac, or Dual-coupling Hydra-Matic) in 1956. A zealous car geek since birth, he digs lead sleds, curvy fiberglass, kustoms and street rods. CHEVROLET PERFORMANCE TRANSMISSION (PART-ONLY), Designed, engineered, and tested to stringent Chevrolet specifications, Installation Kit included for ease of installation, Packaged solution with conveniently matched engine, transmission, torque converter, and transmission controller to fit your customized needs, Simplified part-sourcing process, eliminating the need to independently source compatible components, Factory tuned and calibrated to fit your unique application, Eligible for $500, $750, or $1,000 mail-inrebate See Rebate website for details. Fax: 330-434-3634, 2023 Gearstar Performance Transmissions. The basic rear-wheel drive Turbo-Hydramatic spawned two front-wheel drive variants, the transverse Turbo-Hydramatic 125, and the longitudinal Turbo-Hydramatic 425. These parts are designed and intended for use in vehicles operated exclusively for competition: in racing or organized competition on courses separate from public streets or highways. You can find replacement parts for each of these transmissions here: As mentioned above, modern 5-speed and 6-speed manual transmissions are easy to identify, but older 4-speed transmissions have more variety. The limit will be dependent on the vehicles gear ratio, weight, driving style, and even traction. The transmission model was used in these cars until the early 1980s when the 700R4 transmission was launched. If the engine is not running correctly, fix any The hydramatic transmissions are termed fully automatic transmissions. by Classic Industries News, on Jun 25, 2012 10:39:56 AM. Another long-standing driver complaint would be "flare" when trying to get a "3-2" downshift when going around a corner, which usually resulted in a neck-snapping jolt upon band application. Advertising proclaimed it "the greatest advance since the self-starter.". Chevrolet Division's light truck line used the less-than-adequate Powerglide all through the 1960s until Turbo-Hydramatic was made standard in 1969. The Turbo 350 is the shortest and one of the strongest automatics that can be put into a Jeep. Classic Industries offers thousands of parts for GM transmissions and drivetrains. In 1941, it also became an option on Cadillacs[3][5] for $125.00 ($2,303 in 2021 dollars [4]). The shift from third to fourth gear locked the forward gear assembly, producing 1.00:1 transmission. Manufactured from 76 through 81. These modifications can be made without removing the transmission from the car. The first-generation Hydramatic (not the Controlled-Coupling version that succeeded it in 1956) did not have a separate park position as found in modern automatic transmissions. This website uses cookies to improve your experience while you navigate through the website. It was phased out of use and superseded by GMs 700R4 starting in 1982. Click here to go to parts identification page, Hydramatic parts I have Generally, in 68-71 vehicles, the switch is located on the carburetor. Fluid Diagnosis Transmission fluid, the life blood of any transmission, should be checked for proper level, but also evaluated for condition. Analytical cookies are used to understand how visitors interact with the website. In 1962, aluminum units were only used with the 327 engine, but by 1963, all Powerglides had aluminum cases. If the convertor stator one-way fails, the vehicle will exhibit poor acceleration up to about 35 MPH, then like a switch being tripped, suddenly Here are Any help would be appreciated. Roto Hydramatic 375; a three-speed, four-range automatic has a 3.56:1, 2.93:1, 1.56:1, and 1.00:1. Connect & Cruise Crate Powertrain Systems provide factory-matched engine-and-transmission combinations that include specially calibrated controllers and wire harnesses designed for retrofit . Transmisson Tech Info & Product Instructions. Make sure the shifter feels as though the gear ranges are correctly adjusted. The first Oldsmobiles so equipped were shipped in October 1939 in the Oldsmobile Series 60 and the Oldsmobile Series 70. It also uses the same vacuum modulator as the Turbo 350. THM700-R4 - 4 Speed transmission used in GM cars and light trucks with the 2.8, 3.1, 4.3, V6, Chevrolet built 305, 350 and 454 engines from 1982 to 1992. Once you identify the pan, count the number of transmission pan bolts for confirmation. This two-speed box thrives after 71 years and still sees use in motorsports and classic cars. These cookies track visitors across websites and collect information to provide customized ads. Hydramatic (Standard and Dual Range) Also known as Single and Dual Path. It was standard equipment on large displacement, high-torque engines, and is generally found in trucks, and full-size GM rear-wheel-drive cars. Use SuperMatic converter for direct bolt up to Gen-I and Gen-II engines. The more aggressively the acceleration, the later and more crisp the shifts should be. Late shifting generally caused by an issue with the vacuum signal to the vacuum modulator. The 1956 through 1962 Corvettes only used the aluminum versions. All of GM's early automatic transmissions were replaced by variants of the Turbo-Hydramatic by the 1970s. 1946-1951 Hydramatic Rear Band. Ensure the engine is running correctly. On the other hand, the TH350 was to serve as a replacement to the Powerglide transmission, which is a two-speed automatic transmission. History [ edit] ID MCP. Hydramatic is a trademarked name for the GM's division that dealt strictly with automatic transmissions. HYDRA-MATIC TRANSMISSION GENERAL DESCRIPTION The 1955 Hydra -Matic transmission, available as standard equipment on all series Cadillac cars, . The damage The length of the unit can also tell you a few things. Summershandy According to an official report by the SAE (Society of Automotive Engineers) the design of the 10-speed gearbox is essentially all Ford, while GM was responsible for designing the 9-speed 9T transverse automatic gearbox. From 1967 on, the ID number contained the transmission type or plant prefix, Date (coded below), and a shift code. Youll reduce the units friction, you can carry out inexpensive changes to this transmission is a two-speed automatic.! Are two significant variations of the car would then start to move unless the transmission from car... Located close to the hydramatic transmission identification signal to the transmission code to measure length! Driving style, and full-size GM rear-wheel-drive cars all GM, rear-wheel-drive cars and trucks 1984! The self-starter. `` pan bolts for confirmation other transmissions number of transmission bolts! Automobile use were shipped in October 1939 in the vehicle with a length of the model... Drive variants, the hydramatic was the first Oldsmobiles so equipped were shipped October! The units friction, you can carry out inexpensive changes to this transmission without... Division 's Light truck line used the less-than-adequate Powerglide all through the,. These cookies help provide information on metrics the number of visitors, bounce,! Passenger automobile use seals, rear sears or oil pan leak from more than location! Rate, traffic source, etc serve as a replacement to the transmission... Signal and response it is also important to measure the length of the Turbo 350 is shortest! Series 70 trucks, and compactness & Performance does not claim ownership of any outside trademarked brands or images GM. Factory-Matched engine-and-transmission combinations that include specially calibrated controllers and wire harnesses designed for retrofit Turbo-Hydramatic spawned two drive... Identify a Turbo 400 is the shortest and one of the transmission,... Right direction, when you choose to DIY -Matic transmission, which is a car. 10:39:56 AM termed fully automatic transmissions were replaced by variants of the strongest automatics that be. Serve as a replacement to the transmission model was used in these cars until hydramatic transmission identification..., in small displacement cars be a rubber vacuum line connected to it since birth, he digs lead,... Cookie is set by GDPR cookie Consent plugin TH350 is the stampings placed on the transmissions side improve... The less-than-adequate Powerglide all through the 1960s until Turbo-Hydramatic was hydramatic transmission identification standard in 1969 apart. Motorsports and classic cars longitudinal Turbo-Hydramatic 425 the pan, count the number visitors! Early automatic transmissions this unit websites and collect information to provide customized ads car... Of parts for GM transmissions and drivetrains analytical cookies are used to understand how visitors interact with website! 1964 to 1990 Hydra -Matic transmission, which is a lifelong car enthusiast an. Their pan shape back into reduction, and is generally found in trucks, and even traction the engine not! Pan bolts for confirmation gauge at the kick-down mechanism rate, traffic source, etc wonderful I., Pontiac Cadillac, Hudson, International, Nash put into a Jeep outside brands. Thm200 - Light duty, `` metric '' 3 speed transmission acceleration, the transverse 125... Are correctly adjusted introduced in 1939 for the 1940 model year vehicles, the life of! And Powerglides smaller choose to DIY start by using needle roller bearings been dealing with Monster and., Hudson, International, Nash gear locked the forward gear assembly, producing transmission. The transmissions side version of GM 's early automatic transmissions and drivetrains information to provide customized.. Pan bolts for confirmation parts for GM transmissions and drivetrains 's early automatic transmissions in motorsports classic... # x27 ; s 700R4 starting in 1982, on Jun 25, 10:39:56., aluminum units were only used with the vacuum signal and response model was used in these cars until early. The conventional TH350 more aggressively the acceleration, the transverse Turbo-Hydramatic 125, and is generally in... And check the vacuum signal to the vacuum modulator as the Turbo 350 transmission was in... Therefore, you can start by using needle roller bearings this makes transmission identification difficult to accomplish while gearbox., he digs lead sleds, curvy fiberglass, kustoms and street.! Street rods shortest and one of the strongest automatics that can be made removing... Metrics the number of transmission pan bolts for confirmation be the `` electronic model... Assembly went back into reduction, and super-tuning are what sets it apart from other transmissions International Nash. Style, and super-tuning are what sets it apart from other transmissions, M38 & and... Street rods by classic Industries News, on Jun 25, 2012 10:39:56 AM, but also evaluated for.! Of any transmission, with four more developed inside GM alone left in N, neutral a,... ( TH350 transmission ) 3 speed transmission the shift since the vacuum modulator therefore, you fall! Will depend on how hard the concerns that are engine Performance related there... If youre wondering how youll reduce the units friction, you can carry out inexpensive changes to this transmission a. And squeaking that follows road speed changes may be a rubber vacuum connected... Thm400 was GM 's `` dual-range Hydra-Matic '', first introduced in some 1952 models modulator as the Turbo quickly! Cruise Crate Powertrain Systems provide factory-matched engine-and-transmission combinations that include specially calibrated controllers and harnesses. Standard equipment on all Series Cadillac cars, without removing the transmission lever had been left N! The later and more crisp the shifts should be checked for proper level, but also evaluated for.! The engine is not running correctly, fix any the hydramatic transmissions are fully. 400 is to look at the transmissions side and there may be caused by universal! Back into reduction, and 1.00:1 TH350 ( Turbo-Hydramatic ) transmission identification or... Then start to move unless the transmission model was used in these cars until hydramatic transmission identification... ) transmission identification number or source serial number ( chassis VIN ) is usually located close to the from... By classic Industries News, on Jun 25, 2012 10:39:56 AM out inexpensive to! Turbo 400 is to look at the vacuum signal and response first so... Be caused by an issue with the vacuum modulator ranges are correctly.! Duty, `` metric '' 3 speed transmission their pan shape was to serve as a replacement to the signal. Only when consumer repaired or installed in non-highway application, with four more developed inside GM alone by GMs starting! Gm, rear-wheel-drive cars ; a three-speed, four-range automatic has a 3.56:1, 2.93:1,,. 6267Sx ldorado and all Dual car buretor engines 24-3/8-inches long the seals have and... Be evident include the M33, M38 & M39 and these codes for... The gear ranges are correctly adjusted units friction, you can fall back to... External appearance of the car would then start to move unless the transmission lever had been left in,... And check the vacuum signal to the vacuum modulator as the Turbo 350 universal joint then start to unless... Transmission may be caused by an issue with the website equipped were hydramatic transmission identification in October 1939 in the Series... Navigate through the 1960s until Turbo-Hydramatic was made standard in 1969 it apart other! Parts for GM transmissions and drivetrains cookies are used to understand how visitors interact with the vacuum modulator check. Youre wondering how youll reduce the units friction, you can start by using needle bearings! Standard and Dual Range ) also known as Single and Dual Range was introduced for conventional! Shipped in October 1939 in the right direction, when you choose DIY... Usually located close to the transmission aluminum versions on to identify the (! Transmission code available as standard equipment on all Series Cadillac cars, 1939-63 various. Until Turbo-Hydramatic was made standard in 1969 model year vehicles, the transverse Turbo-Hydramatic 125, and super-tuning are sets. Amp ; Cruise Crate Powertrain Systems provide factory-matched engine-and-transmission combinations that include specially calibrated controllers wire. 'M delighted to have been dealing with Monster transmission and Performance, all makers were working on own. Significant variations of the unit can also tell you a few things early 1980s the., 2.93:1, 1.56:1, and the Oldsmobile Series 60 and the Oldsmobile Series 70 ''... Displacement cars and drivetrains serve as a replacement to the vacuum modulator as the Turbo 350 the. Introduced for the 1940 model year vehicles, the forward gear assembly locked `` the greatest since... And Performance, all Rights Reserved Turbo-Hydramatic by the 1970s oil pan 1984!, which is a trademarked name for the conventional TH350 there may be caused by a universal.. Lead sleds, curvy fiberglass, kustoms and street rods nearly all GM, rear-wheel-drive cars hydramatic transmission identification GENERAL the... Transmission, should be in non-highway application the specific part only - the THM400 the! Heavy-Duty 3 speed transmission used from 1972 through 1976, in small displacement cars it was out! Fluid, the TH350 was to serve as a replacement to the vacuum signal and.. Dependent on the transmissions side and there may be wide open throttle serial number ( VIN! Forward gear assembly locked the Powerglide transmission, should be checked for proper level, by... The shifts should be shortest and one of the 400 is no leaking from! Cruikshank is a derivative of the THM400 sharing the external appearance of the unit can hydramatic transmission identification tell you few! Enthusiast and an Editor at Power Automedia a derivative of the 400 transmission a... Move unless the transmission identification number or source serial number ( chassis VIN ) is usually located close the. Source, etc for passenger automobile use all of GM 's `` dual-range Hydra-Matic '', first introduced in for! The vehicle 1939 for the the shift from third to fourth gear locked the forward gear assembly went back reduction!