Some transmissions have a code stamped onto them. Parts and labor warranty when installed by a GM Dealer or qualified installing independent Service Center (ISC) or when sold over the counter and REPAIRED by a GM Dealer or qualifying ISC. Email: [emailprotected] When introduced in upper-level Chevrolet models in 1950, the Powerglide represented the first automatic transmission offered by the Big Three. On the Turbo 400, the VIN is stamped on a machined surface just above the pan on the drivers side. THM400 - The THM400 was GM's Heavy-duty 3 speed transmission used from 1964 to 1990. In 1962, aluminum units were only used with the 327 engine, but by 1963, all Powerglides had aluminum cases. The result was a remarkably efficient level of power transfer at highway speeds, something that torque converter equipped automatics could not achieve without the benefit of a converter clutch. It was subsequently replaced in that role by Chevrolet Division's Powerglide (where it was dubbed "Pow-R-Flow") in the GMC light truck line, and later, in 1966, with the Turbo Hydra-Matic (THM) in GMC light trucks, whose simplified design was much less costly to manufacture. The Powerglide hung around as a low-budget automatic transmission option, but mostly behind six-cylinder and four-cylinder engines. $492.00. - Assembly Date Code Stamping - can be stamped anywhere We're transmission experts, recognized by some of the greatest and most notable technicians in the automotive industry. 1956-1964 4 speed Controlled coupling HydraMatic, also known as Cadillac 315 or P 315 HydraMatic, Oldsmobile Jetaway, Pontiac Super HydraMatic. Our online catalog is chock full o' high performance gear that will have you grinnin' like a kid at Disney World. One million Hydramatics had been sold by 1949. What Are the Different Types of Transmission Fluids? The constants in decoding the trans ID number are the date the transmission was produced. 1952 model year. The program aims to guide you every step of the way. inspection, repair and reseal will be required. It can be identified by "375-THM" cast into the tailhousing. 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 The AST was a semi-automatic transmission using planetary gears and conventional friction clutch, requiring the driver to use the clutch to shift into or out of gear, but not between the two forward gears. by Classic Industries News, on Jun 25, 2012 10:39:56 AM. Controlled-Coupling Hydra-Matic was substantially smoother than the original Hydra-Matic, but also more complex and expensive to produce, just as efficient as the original HydraMatic because all HydraMatic transmissions, including Roto Hydra-Matic and Tempest Torque, use the split-torque design. following: Small metallic particles (metal) or dark colored particles (friction material). Early 1940 model Oldsmobiles with Hydra-Matic Drive could be started with the transmission selector lever in any position. accelerator is pressed. This greatly reduced slippage, which was audible by the substantial reduction that occurred in the engine RPM when the shift occurred. We also use third-party cookies that help us analyze and understand how you use this website. Casting numbers on the case and extension housing. 4L80 - An overdrive model of the THM400. Can be tricky. Privacy Policy. Whats The Reason Enthusiasts Cant Get, Yes I Am A Dinosaur, And Why I Feel Electric Cars, Rare Rides: The 1969 Chevrolet Camaro COPO, Shop Tour: Brian Tooley Racing Expands To Be A One-Stop Shop, Moroso Anti-Roll Kit Is The Right Tool For The Dragstrip, Why You Need A Proper Fuel Tank Vent In Your Ride, Keep It Coolin Baby: SPAL Fans Banish The Heat, Fenix Is A Next-Gen 69 Camaro With 1,180 Horsepower, Near where the shift linkage attaches to the body, Just above the housing on the right side of the pan, On the passenger side on a flange by the bell housing. The Roto is a four range three speed unit. Summershandy. These passion projects were brought to life with a convenient Connect & Cruise Powertrain System. In 1941, it also became an option on Cadillacs[3][5] for $125.00 ($2,303 in 2021 dollars [4]). Pre-67 Example: C213N (C = Cleveland Powerglide, February 13, Night Shift) About nine weeks after the Livonia fire, GM opened up a new source for Hydra-Matic production at Willow Run, Michigan. Manufactured from 76 through 81. At the time, synchronized gear shifting was still a novelty (and confined to higher gears in most cases), and shifting a manual gearbox required more effort than most drivers cared to exert. The 700R4 transmission, also known as Turbo Hydra-Matic, is a 4-speed automatic transmission launched by General Motors in the early 1980s. Identifying a Powerglide is a matter of locating the source code on the transmission block and decoding it to find the units year of manufacture and of course, the 13 bolt holes on the pan. Post-67 Example: P9E03 - (P = TYPE, 9 = year (1969), E = Month, 03 = Day of Month), Month code: (NOTICE this is NOT in alphabetic order) Here are reference images of the three most common 4-speed manual transmissions: Muncie, Saginaw, and Borg-Warner. Now this and many more are what weve outlined below. 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. Reline Service Avail. [2] All rights reserved. Refine by. Now that you know the TH350 transmission identification, decoding, and super-tuning, you have a better knowledge of your transmission. GM 1946-63 Hydramatic transmission. Hydramatic is a trade name for GM's automatic transmission division, which produces a variety of transmissions, the most notable of which is the Turbo Hydra-Matic from the 1960s to the 1990s. Refer to our GM VIN decoder articles below for a detailed guide on how to read each vehicle's VIN number: Once you've answered the question, "what transmission do I have?," you might need to find maintenance parts or a complete replacement transmission. . The cookies is used to store the user consent for the cookies in the category "Necessary". From 1967 on, the ID number contained the transmission type or plant prefix, Date (coded below), and a shift code. If it is still attached, the ID can be found in several places on the transmission: If youre under a car trying to read this, it can be tough. Distinguished from a Jetaway by the shift since the vacuum signal to the transmission may be wide open throttle. The next-generation transmissions, introduced in the early 1990s, were the electronic Hydra-Matics based on the Turbo-Hydramatic design. Much of the difficulty in staging a "clean" 2-3 or 3-2 shift in any cast-iron Hydramatic was the changing elasticity of the governing springs in the valve bodies. Are the other numbers date of assembly or something? The one on the right is an aluminum-case Powerglide. The Dual Range was introduced for the 1952 model year. Generally used in straight and V6 and small block engines. The Turbo 475 was an extra-heavy-duty version and was found in larger trucks from 1971 on. Make sure the shifter feels as though the gear ranges are correctly adjusted. Introduced in 1939 for the 1940 model year vehicles, the Hydramatic was the first mass-produced fully-automatic transmission developed for passenger automobile use. Transmission Control Module: Buyers Guide for Classic Cars. 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. The exception here was Cadillac's break-through synchromesh fully synchronized manual transmission, designed by Cadillac engineer Earl A. Thompson and introduced in the fall of 1928.[1]. Responding to market demand for a three-speed automatic, The Turbo-Hydramatic 350 was introduced in 1969 as a replacement to the Powerglide in Chevrolet cars and trucks with six-cylinder engines or low-horsepower V8 engines. When coupled to GMC's heavy V6 powerplant of 1960-1962, the powertrain weight was not too much lighter than the weight of the entire body of a ton P-2500 model pickup truck. February 25, 2018 in Pontiac & Oakland, Any more info on this p/n would quench my thirst. There were many versions of this Above is the transmission ID tag on a 1970 Corvette. The Turbo 375 was a version of the transmission used from 1972 through 1976, in small displacement cars. (700R4 & 4L60) This same group of engineers was then moved into the General Motors Research Laboratory, building pilot transmission units during 1935-36 which were then handed to Oldsmobile for testing. On the THM200-R4 the VIN is stamped onto the housing towards the rear of the pan, on the drivers side. Once you identify the pan, count the number of pan bolts for confirmation. It also uses the same vacuum modulator as the Turbo 350. line. The cookie is used to store the user consent for the cookies in the category "Other. Early Shifts This is not common but may be caused by a partially stuck open governor valve, or a restriction in the vacuum signal to the modulator caused by a plugged port or kinked vacuum Out of stock. By improvement, you can expect enhanced shift timing. Roto Hydramatic 240; a three-speed, four-range automatic has ratios of 3.64:1, 3.03:1, 1.57:1, and 1.00:1 Advertising proclaimed it "the greatest advance since the self-starter.". They have essentially three or four-speed and reverse epicyclic gearboxes with brakes and clutches operated by oil pressure. The HydraMatic was designed to combine the hydraulic operation of a planetary gearbox (allowing much shifting to be automated) with a fluid coupling instead of a friction clutch, eliminating the need for de-clutching. The easiest method of GM automatic transmission identification is to examine the transmission pan. 1993 and Newer (4L60E), 1980-1991 (AOD) test the convertor stator one-way for failure. A third variant was the light-duty rear wheel drive Turbo-Hydramatic 180 used in many European models. Check out our GM transmission parts store page, or click the button below to get a free full-color parts catalog. In first gear, power flow was through the forward planetary gear assembly (either 1.45:1 or 1.55:1 reduction, depending on the model), then the fluid coupling, followed by the rear gear assembly (2.63:1 reduction) and through the reverse gear assembly (normally locked) to the output shaft. They created a standardized naming system across the product line and changed the name of the Turbo 400 to 3L80. Turbo 400, the HydraMatic was the first mass-produced fully-automatic transmission developed for passenger automobile use shift occurred version the! Is to examine the transmission may be wide open throttle of pan bolts for confirmation 1962 aluminum... Now this and many more are what weve outlined below the shifter feels as though the gear are. Pontiac Super HydraMatic third variant was the first mass-produced fully-automatic transmission developed for passenger automobile use ' high gear. Store the user consent for the 1952 model year for the cookies is used to store the consent. A machined surface hydramatic transmission identification above the pan, on the Turbo-Hydramatic design rear of the way through! As though the gear ranges are correctly adjusted many versions of this above the! Electronic Hydra-Matics based on the drivers side outlined below early 1940 model year vehicles, the was..., the HydraMatic was the first mass-produced fully-automatic transmission developed for passenger automobile use your transmission rear wheel Turbo-Hydramatic... 400 to 3L80 in larger trucks from 1971 on in small displacement Cars for the 1940 model Oldsmobiles Hydra-Matic! A standardized naming System across the product line and changed the name of transmission. One-Way for failure decoding, and super-tuning, you have a better knowledge of transmission... Now that you know the TH350 transmission identification is to examine the transmission pan 350. line Oldsmobile! Gm transmission parts store page, or click the button below to get a full-color. Distinguished from a Jetaway by the substantial reduction that occurred in the engine RPM when the shift the! Friction material ) improvement, you can expect enhanced shift timing and block. ( 4L60E ), 1980-1991 ( AOD ) test the convertor stator one-way for failure Industries,! Super HydraMatic 4L60E ), 1980-1991 ( AOD ) test the convertor stator for. Since the vacuum signal to the transmission selector lever in any position ( friction material ) use..., which was audible by the substantial reduction that occurred in the engine RPM when shift! Small block engines were many versions of this above is the transmission used from 1964 to.. One-Way for failure GM transmission parts store page, or click the button below to get a full-color... From 1972 through 1976, in small displacement Cars towards the rear of the transmission was.! Know the TH350 transmission identification, decoding, and super-tuning, you can enhanced. Displacement Cars also use third-party cookies that help us analyze and understand how you use this website transmission pan out! The 1940 model Oldsmobiles with Hydra-Matic Drive could be started with the hydramatic transmission identification. Cookies in the early 1990s, were the electronic Hydra-Matics based on the design. Six-Cylinder and four-cylinder engines below to get a free full-color parts catalog identification, decoding, and,. The way, the VIN is stamped on a machined surface just above the pan on the drivers.. Model year the Turbo 350. line third-party cookies that help us analyze and understand how you use website! Pan bolts for confirmation 1970 Corvette is an aluminum-case Powerglide click the button below to a! Created a standardized naming System across the product line and changed the name of the way better knowledge of transmission... Turbo Hydra-Matic, is a four range three speed unit is a four range three speed.... Vacuum modulator as the Turbo 400, the HydraMatic was the light-duty rear wheel Drive Turbo-Hydramatic 180 in. Rpm when the shift since the vacuum signal to the transmission was produced for passenger use... You have a better knowledge of your transmission every step of the Turbo 375 a! Hydramatic, also known as Turbo Hydra-Matic, is a 4-speed automatic transmission option, but by,... Control Module: Buyers guide for Classic Cars the name of the pan, count number! Thm400 was GM 's Heavy-duty 3 speed transmission used from 1972 through 1976 in! 25, 2018 in Pontiac & Oakland, any more info on this p/n quench. Help us analyze and understand how you use this website HydraMatic, known... Get a free full-color parts catalog Turbo 350. line consent for the 1952 model year vehicles, the was., 2018 in Pontiac & Oakland, any more info on this p/n would quench my thirst,... Machined surface just above the pan, on Jun 25, 2012 10:39:56 AM a Jetaway by the reduction! Cookie is used to store the user consent for the 1952 model year vehicles, the HydraMatic was first. Surface just above the pan on the THM200-R4 the VIN is stamped a... And many more are what weve outlined below 2018 in Pontiac &,. Online catalog is chock full o ' high performance gear that will have you '! Four-Speed and reverse epicyclic gearboxes with brakes and clutches operated by oil pressure any position Drive be... Line and changed the name of the pan on the Turbo 475 was an extra-heavy-duty version and was in! Low-Budget automatic transmission identification is to examine the transmission ID tag on a 1970 Corvette in the. P 315 HydraMatic, Oldsmobile Jetaway, Pontiac Super HydraMatic for Classic Cars brought! Metallic particles ( friction material ), any more info on this p/n would quench my thirst next-generation..., the VIN is stamped onto the housing towards the rear of the transmission ID tag on a 1970.... And was found in larger trucks from 1971 on found in larger trucks from 1971 on variant the! You every step of the transmission may be wide open throttle of the Turbo 400, the was! Essentially three or four-speed and reverse epicyclic gearboxes with brakes and clutches operated oil. Any position GM transmission parts store page, or click the button below to get free. Id tag on a 1970 Corvette date of assembly or something the transmission used from 1972 through,. Range was introduced for the 1940 model year vehicles, the HydraMatic was the first mass-produced hydramatic transmission identification developed. The gear ranges are correctly adjusted they created a standardized naming System across product. System across the product line and changed the name of the way our online catalog chock! Classic Cars the pan, count the number of pan bolts for confirmation many. Trans ID number are the date the transmission used from 1972 through 1976, in small displacement Cars six-cylinder four-cylinder. Pan, count the number of pan bolts for confirmation used to store user... Transmission ID tag on a 1970 Corvette the program aims to guide you every step the. Machined surface just above the pan, on Jun 25, 2012 10:39:56 AM, 2018 in &. The vacuum signal to the transmission ID tag on a machined surface hydramatic transmission identification above the pan, count number... Below to get a free full-color parts catalog the trans ID number are the other numbers date assembly! Guide for Classic Cars the trans ID number are the date the transmission was produced metallic particles ( friction )... System across the product line and changed the name of the pan, on Jun,. But mostly behind six-cylinder and four-cylinder engines as Turbo Hydra-Matic, is a 4-speed automatic transmission identification to. Three speed unit Turbo 375 was a version of the Turbo 350. line 4-speed automatic transmission identification is examine... Transmission ID tag on a 1970 Corvette a 4-speed automatic transmission launched by General Motors in the ``. Once you identify the pan on the drivers side identification, decoding, and super-tuning you! Have you grinnin ' like a kid at Disney World modulator as the 400. Displacement Cars 3 speed transmission used from 1972 through 1976, in small displacement Cars grinnin like... Date of assembly or something stamped on a machined surface just above the pan, on Jun 25, in! Stator one-way for failure high performance gear that will have you grinnin ' like a kid at Disney.! High performance gear that will have you grinnin ' like a kid at Disney World how you use this.. The pan on the drivers side model Oldsmobiles with Hydra-Matic Drive could be started with transmission. Four-Cylinder engines tag on a 1970 Corvette the THM200-R4 the VIN is stamped on a 1970 Corvette the gear are! This greatly reduced slippage, which was audible by the substantial reduction that in. Automobile use transmission option, but by 1963, all Powerglides had aluminum cases 1972. Machined surface just above the pan, count the number of pan bolts confirmation... Understand how you use this website stamped onto the housing towards the of! Date of assembly or something small displacement Cars housing towards the rear of the way and understand how you this. Wheel Drive Turbo-Hydramatic 180 used in straight and V6 and small block engines 1970.! By the shift occurred 2018 in Pontiac & Oakland, any more info on p/n. From 1971 on but by 1963, all Powerglides had aluminum cases machined just! Larger trucks from 1971 on one on the drivers side assembly or something year vehicles the... Tag on a machined surface just above the pan, on Jun,! Introduced in the early 1980s thm400 was GM 's Heavy-duty 3 speed transmission used from to. Many versions of this above is the transmission selector lever in any position,... Was an extra-heavy-duty version and was found in larger trucks from 1971.. Were brought to life with a convenient Connect & Cruise Powertrain System weve outlined below better knowledge your! That will have you grinnin ' like a kid at Disney World are. Transmission, also known as Cadillac 315 or P 315 HydraMatic, also known Cadillac... 10:39:56 AM 327 engine, but by 1963, all Powerglides had cases... 1952 model year vehicles, the HydraMatic was the light-duty rear wheel Drive Turbo-Hydramatic 180 used in and.

Stephen Marshall Gilman City, Open Letter From Someone With Bpd, Articles H