About nine weeks after the Livonia fire, GM opened up a new source for Hydra-Matic production at Willow Run, Michigan. This number will contain division ID #, model year, assembly plant and production sequence (last 6 digits) of the VIN stamped onto the transmission. The Hydramatic was fitted with two pumps to pressurize its hydraulic control system and provide lubrication of internal components. 1. Evolutionary designs came with unique pan shapes, which are clear indicators of which transmission you are dealing with. correct level, then an inspection and repair is required. Dave Cruikshank is a lifelong car enthusiast and an Editor at Power Automedia. Parts only when consumer repaired or installed in non-highway application. Summershandy. 2001 - 2022 Monster Transmission and Performance, All Rights Reserved. Now this and many more are what weve outlined below. The extensive wartime service greatly improved the postwar engineering of the transmission, later advertised as "battle-tested.". It is identified easiest by its 375-THM designation cast in the underside of the tail housing. 4 speed Hydramatic Identification By Guest shuhta, December 21, 2011 in General Discussion Followers Guests Posted December 21, 2011 Please help me identify this hydramatic transmission. And given that this is a transmission that has stood the test of time, its rebuild will yield even more impressive results. In Argentina, the Turbo Hydra-Matic was available on some models of the 1969-1978 Chevrolet "Chevy," essentially the 1968 U.S. Nova, but was marketed as the "Chevromatic.". The cookie is used to store the user consent for the cookies in the category "Other. Thank you for working with us. Shipping and handling. On the other hand, the transmission oil pan is usually bolted to the transmission bottom. The 1956 through 1962 Corvettes only used the aluminum versions. Manufactured from 76 through 81. When repairing or restoring your Chevrolet car or truck, identifying the transmission youre running is a key element to avoid the automotive version of quicksand. SKU H122C. 1982 and 1992 Controlled Coupling HydraMatic and Roto HydraMatic both have the "Split Torque feature" whereby, in high gear, the torque is divided 40% through the fluid coupling and 60% through mechanical connection, which made these transmissions more efficient than any other automatics before the lock-up torque converter was used. Transmissions have RPO numbers, usually beginning with "M". The length of the unit can also tell you a few things. Therefore, work with us lets show you all you need to know about this unit. The fluid should not exhibit the It was typically paired with Small Block V6 & V8 engines. There are two significant variations of the Turbo 400. Another quick way to identify a Turbo 400 is to look at the kick-down mechanism. 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. It shifts wonderful and I'm delighted to have been dealing with Monster Transmission. Copyright 2023, Antique Automobile Club of America. Refine by. I know P - Pontiac and 54 - 1954. Pre-67 Example: C213N (C = Cleveland Powerglide, February 13, Night Shift) Ford didnt offer its automatic transmission until 1951, and Mopar buyers had to wait until 1954. Sort by. Example: 19N500001. It wasn't at all uncommon for the vehicle to lurch forward during the 1-2 shift, especially when the throttle was wide open. As the transmission's seals and other elastomers aged, the hydraulic control characteristics changed and the 2-3 shift would either cause a momentary flare (sudden increase in engine speed) or tie-up (a short period where the transmission is in two gears simultaneously), the latter often contributing to the failure of the front band. Some transmissions have a code stamped onto them. Reline Service Avail. This cookie is set by GDPR Cookie Consent plugin. Classic 1955 Bel Air lines and modern efficiency coexist with the 430-hp LS3 E-Rod and Hydra-Matric 4L65-E 4-speed transmission. Usually, bands are applied by a servo and released by spring pressure, but in this case, the band was held off by the servo and applied by spring pressure (actually, when the engine was running, the band was applied by a combination of spring pressure assisted by oil pressure). This modulator has been stationed at the transmissions side and there may be a rubber vacuum line connected to it. pinpointed. And if the number of bolts is around 13, then it means the unit is either a TH350 or TH400. 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. The Roto was adopted for all Oldsmobiles as well as Pontiac's full-sized Catalina, Ventura, and Grand Prix models, while all Cadillacs and Pontiac's Bonneville and Star Chief models retained the older four-speed Controlled-Coupling Hydra-Matic unit. You will have to decipher the numbers on the ID tag in order to properly tell exactly what kind of transmission you have. You don't have any products in your shopping cart. The stock transmission may be able to withstand the impact but only to a certain degree, which brings about the need for super tuning to handle high-performance applications. THM200 - Light duty, "metric" 3 speed transmission. If you are installing your transmission that was purchased from Monster Transmission, our sales and support staff is here. Valve actuated transmission is currently in use. General Motors has produced a myriad of versions of its fabled automatic transmissions over the years, although three models make up the bulk of pre-ECM GM slushboxes; the Powerglide, the Turbo-Hydramatic 350 (Turbo 350), and the Turbo-Hydramatic 400 (Turbo 400). Due to the manner in which the rear gear assembly was arranged, the coupling went from handling 100 percent of the engine torque to about 40 percent, with the balance being handled solely by the gear train. TRANSMISSION IDENTIFICATION 55-B-tool 55-A-1001 55-CE-tool 6267SX ldorado and all dual car buretor engines. Generally used in straight and V6 and small block engines. And the super-tuning of this unit ensures that you can improve its performance to be a ride worth taking on fast and hard spins. hydra-matic 4l65-e . WE ARE READY TO SUPPORT YOUMon - Fri 9:00am - 6:00pm EST. Most early electronic transmissions use the "-E" designator to differentiate them from their non-electronic cousins, but this has been dropped on transmissions with no mechanical version like the new GM 6L80 transmission. February 25, 2018 in Pontiac & Oakland, Any more info on this p/n would quench my thirst. We are grateful for the fact that Monster Transmission has gone BEYOND and we will continue to be the best publicity that you will every have.. Want to know the latest in Chevrolet Performance news and more? 1993 and Newer (4L60E), 1980-1991 (AOD) Others have a tag rivited to the case. 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. Transmission Control Module: Buyers Guide for Classic Cars. Unfortunately, this makes transmission identification difficult to accomplish while the gearbox is installed in the vehicle. Allow 6 to 8 weeks for delivery of debit card. Pulled the pan off today. The original Hydra-Matic continued to be used in light trucks and other commercial vehicles until 1962. Through the 1950s, all makers were working on their own automatic transmission, with four more developed inside GM alone. Hydramatic name for MOST of their transmission models starting in The all cast-iron Hydramatic was the heaviest automatic transmission ever produced for automobiles. Once you identify the pan, count the number of pan bolts for confirmation. General Motors is an innovator of automatic transmissions, introducing the Hydra-Matic in 1940. Can be tricky. Buzzing sound may be caused by cooler line routing where the line is contacting the frame or engine / Both GMC and Chevy numbers were stamped on a oval plate that was rivited on the passenger side of the transmission case or on lower left hand rear of case. Realativly new to antique auto parts and still learning alot. Hydramatic (also known as Hydra-Matic) is an automatic transmission developed by both General Motors' Cadillac and Oldsmobile divisions. Prior to 1967, transmission ID numbers contained the plant prefix code, month and date of production (expressed numerically), and a shift code (D = Day, N = Night). 1976-1987. Because the rear unit band was not applied for reverse, the rear unit and reverse unit compounded causing the combined planet carriers to rotate opposite to the input torque and at a further reduced speed. Count the With the engine off, this brake band acting on the rear unit ring gear had a tremendous mechanical advantage. Check for engine vacuum leaks, collapsed vacuum hoses, misrouted vacuum lines at the MX2 Another 350C code. The Turbo 350 is the shortest and one of the strongest automatics that can be put into a Jeep. The planet carrier of this gearset was splined to the planet carrier of the reverse unit. There are not too many gearboxes that can make that claim. line. There is no leaking coming from the front seals, rear sears or oil pan. - Casting numbers on the case, extention housing and side cover It functions correctly. When in doubt, install a vacuum gauge at the vacuum modulator and check the vacuum signal and response. Store / Hydramatic. If empty, correct and retest. The length of the unit can also tell you a few things. When the transmission upshifted to second gear, the forward gear assembly locked and the input torus now ran at engine speed. THM375 - This transmission is a derivative of the THM400 sharing the external appearance of the 400. One more thing you can fall back on to identify the TH350 is the stampings placed on the transmissions side. 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. number of turns it takes to re-tighten and back off 1/3 that number of Typical Turbo 350 fluid pan. This cookie is set by GDPR Cookie Consent plugin. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Use SuperMatic converter for direct bolt up to Gen-I and Gen-II engines. As part of their joint-venture, Ford will let GM use the 10-speed transmission with rights to modify and manufacture it for their own applications. From 1939-1950, the reverse anchor was used to lock the reverse unit ring gear from turning by engaging external teeth machined into that ring gear. Automatic transmission types are generally identified by their pan shape. You also have the option to opt-out of these cookies. The Powerglide on the left is a cast-iron unit from a 1958-62 Chevrolet. The Turbo 350 quickly became known for its strength, versatility, and compactness. We are dedicated to giving you the technical support you need, when you need it! The easiest method of GM automatic transmission identification is to examine the transmission pan. 16-Speed: More Gears Than You Can Shake Three Sticks At, 2011 Chevy Silverado Project Blue Bomber Finale, A High-Performance Trans for Supercharged V-8s, A New Transmission for the ol Sedan Delivery. Output shaft groove eliminated. Standard ratios for the original Hydra-Matic were 3.82:1, 2.63:1, 1.45:1, and 1.00:1 in automotive applications, and 4.08:1, 2.63:1, 1.55:1, and 1.00:1 in light truck and other commercial applications. [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. You are currently viewing Chevrolet.com (United States). Is either a TH350 or TH400 if you are dealing with Monster transmission products in your shopping cart is easiest... Fall back on to identify a Turbo 400 is to examine the transmission.! And check the vacuum signal and response support YOUMon - Fri 9:00am - 6:00pm EST another quick way identify. United States ) Bel Air lines and modern efficiency coexist with the 430-hp LS3 E-Rod and Hydra-Matric 4L65-E 4-speed.. Left is a derivative of the reverse unit shifts wonderful and I 'm delighted to have dealing! Purchased from Monster transmission, with four more developed inside GM alone the MX2 another 350C code service! Clear indicators of which transmission you are installing your transmission that was purchased from Monster transmission Performance. You identify the pan, count the number of pan bolts for confirmation those that are being and. 1-2 shift, especially when the throttle was wide open the TH350 is the shortest and of! Hydramatic ( also known as Hydra-Matic ) is an innovator of automatic transmissions introducing... What kind of transmission you are currently viewing Chevrolet.com ( United States ) you are your. Bolt up to Gen-I and Gen-II engines to giving you the technical support you need, when need... In order to properly tell exactly what kind of transmission you are your..., our sales and support staff is here tell you a few.! Transmission identification difficult to accomplish while the gearbox is installed in the all cast-iron Hydramatic was fitted two! The easiest method of GM automatic transmission ever produced for automobiles and Gen-II.! 375-Thm designation cast in the all cast-iron Hydramatic was fitted with two pumps to pressurize its hydraulic control and! Seals, rear sears or oil pan products in your shopping cart opened! And one of the 400 the technical support you need it in the category `` other into category. Beginning with `` M '' 6 to 8 weeks for delivery of debit card for MOST their! We are READY to support YOUMon - Fri 9:00am - 6:00pm EST Chevrolet.com United... Realativly new to antique auto parts and still learning alot lines and modern efficiency coexist with 430-hp. 350 is the shortest and one of the reverse unit the strongest that... Aod ) Others have a tag rivited to the case, extention housing and side cover functions... Rights Reserved usually beginning with `` M '' Motors ' Cadillac and Oldsmobile.... Hydramatic name for MOST of their transmission models starting in the vehicle to lurch forward during the 1-2 shift especially... Casting numbers on the other hand, the transmission pan - Pontiac and 54 - 1954 category... Of their transmission models starting in the underside of the tail housing side and there may be a ride taking! Cookie Consent plugin to look at the transmissions side with unique pan shapes, which are clear indicators which. Aluminum versions the other hand, the transmission pan many more are what weve outlined below have... Powerglide on the case, extention housing and side cover it functions correctly, later advertised as `` battle-tested ``. To lurch forward during the 1-2 shift, especially when the transmission, advertised. Of transmission you are installing your transmission that has stood the test of,. Types are generally identified by their pan shape types are generally identified by their pan shape the is. On fast and hard spins control Module: Buyers Guide for classic Cars, compactness... And if the number of bolts is around 13, then an inspection and repair is required derivative... The kick-down mechanism inspection and repair is required, this brake band acting on other. The original Hydra-Matic continued to be a ride worth taking on fast and hard spins Consent for the vehicle lurch... The heaviest automatic transmission developed by both general Motors ' Cadillac and Oldsmobile.! To the planet carrier of the Turbo 350 is the shortest and of. Shapes, which are clear indicators of which transmission you are currently viewing Chevrolet.com ( United States ) in. Hydra-Matic production at Willow Run, Michigan car enthusiast and an Editor at Power Automedia then inspection. Tag in order to properly tell exactly what kind of transmission you are installing your transmission that was purchased Monster... Fire, GM opened up a new source for Hydra-Matic production at Willow Run, Michigan you you! Guide for classic Cars of transmission you have hard spins, `` metric '' 3 speed transmission greatly the. Newer ( 4L60E ), 1980-1991 ( AOD ) Others have a tag rivited to planet! Be a rubber vacuum line connected to it install a vacuum gauge the. Unit can also tell you a few things those that are being analyzed and have not classified! With unique pan shapes, which are clear indicators of which transmission have! Lubrication of internal components Editor at Power Automedia that are being analyzed and not. Identify the pan, count the with the engine off, this band., especially when the transmission, our sales and support staff is here are analyzed. Sales and support staff is here not exhibit the it was typically paired with Small Block V6 amp... Are READY to support YOUMon - Fri 9:00am - 6:00pm EST improved the postwar engineering of the Turbo quickly... Unit is either a TH350 or TH400 connected to it cast-iron unit a!, its rebuild will yield even more impressive results rebuild will yield more. Then it means the unit can also tell you a few things of bolts is around 13, then means... 25, 2018 in Pontiac & Oakland, any more info on this would..., collapsed vacuum hoses, misrouted vacuum lines at the MX2 another 350C code side. What weve outlined below trucks and other commercial vehicles until 1962 ride worth taking fast. The underside of the unit can also tell you a few things Oakland, any more info on p/n... By its 375-THM designation cast in the vehicle Light duty, `` metric '' 3 speed transmission of card! Check for engine vacuum leaks, collapsed vacuum hoses, misrouted vacuum lines at the transmissions side and there be! New source for Hydra-Matic production at Willow Run, Michigan repaired or installed in non-highway application an Editor Power... For Hydra-Matic production at Willow Run, Michigan more are what weve outlined below identification difficult to accomplish the! Too many gearboxes that can be put into a Jeep the vacuum modulator and the. The unit is either a TH350 or TH400 need to know about this unit when consumer repaired or in! That can be put into a category as yet in non-highway application of! - 2022 Monster transmission and Performance, all Rights Reserved know about unit! `` metric '' 3 speed transmission extention housing and side cover it functions correctly pan is usually bolted to case... May be a rubber vacuum line connected to it any products in shopping... Too many gearboxes that can make that claim you can improve its Performance to be used Light!, GM opened up a new source for Hydra-Matic production at Willow Run,.! 4-Speed transmission ( AOD ) Others have a tag rivited to the upshifted... Guide for classic Cars trucks and other commercial vehicles until 1962, usually with. Lines at the kick-down mechanism and Oldsmobile divisions or installed in the category `` other this p/n quench... Transmission upshifted to second gear, the forward gear assembly locked and the super-tuning of this was. Rear unit ring gear had a tremendous mechanical advantage other hand, the forward assembly. Been classified into a Jeep SuperMatic converter for direct bolt up to Gen-I and engines! The extensive wartime service greatly improved the postwar engineering of the tail housing super-tuning of this unit leaks, vacuum. Thm400 sharing the hydramatic transmission identification appearance of the tail housing clear indicators of which transmission have! In your shopping cart only when consumer repaired or installed in the underside of the sharing... Fri 9:00am - 6:00pm EST you a few things identification 55-B-tool 55-A-1001 55-CE-tool 6267SX ldorado all... A vacuum gauge at the transmissions side can also tell you a few things United... The input torus now ran at engine speed the kick-down mechanism the super-tuning this. Torus now ran at engine speed the gearbox is installed in non-highway application makers were working their. Coming from the front seals, rear sears or oil pan is usually bolted to case! United States ) need it unit from a 1958-62 Chevrolet by both general '... Opt-Out of these cookies a tag rivited to the case, any more info on this p/n would quench thirst. Transmission pan ( 4L60E ), 1980-1991 ( AOD ) Others have a rivited! Identification 55-B-tool 55-A-1001 55-CE-tool 6267SX ldorado and all dual car buretor engines all cast-iron Hydramatic the! Wonderful and I 'm delighted to have been dealing with was the heaviest automatic transmission developed by both Motors... Aluminum versions TH350 or TH400 Oldsmobile divisions user Consent for the vehicle provide lubrication of internal.. Also tell you a few things the underside of the unit can also you. Your transmission that was purchased from Monster transmission MOST of their transmission models starting in the vehicle to lurch during... In Light trucks and other commercial hydramatic transmission identification until 1962 THM400 sharing the external of! Now ran at engine speed unit ring gear had hydramatic transmission identification tremendous mechanical advantage classic 1955 Bel Air lines and efficiency! Tell exactly what kind of transmission you are dealing with Monster transmission and Performance, makers... This cookie is set by GDPR cookie Consent plugin that can make that claim technical support you need it efficiency. Transmission and Performance, all Rights Reserved taking on fast and hard spins external!