The 700R4 transmission, also known as Turbo Hydra-Matic, is a 4-speed automatic transmission launched by General Motors in the early 1980s. Check for engine vacuum leaks, collapsed vacuum hoses, misrouted vacuum lines at the If you find that your transmission fluid isn't maintaining its red color, then it is time to get your car in for repair. 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. GM ASEP technicians can earn their degree in as little as 2 years, kick-starting a fulfilling career in the automotive industry. This cookie is set by GDPR Cookie Consent plugin. transmission and many parts do not interchange among them. Ensure the engine is running correctly. The original Hydra-Matic continued to be used in light trucks and other commercial vehicles until 1962. 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. 1965 and Newer Typical Turbo 350 fluid pan. 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. No shift may be caused by a stuck or inoperative governor, or may act like a no-shift when in fact the modulator is holding back Click Here for Hemmings Hydramatic History - Turns 75 Thank you Monster Transmission. The GM Hydra-Matic was a success and installed in the majority of GM models by 1950. Visit TheBLOCK.com for a behind-the-scenes look at the world of Chevrolet Performance from an enthusiast's point of view. Check the transmission fluid level, and if low, correct and retest. Please click Accept Cookies to continue to use the site. Front = 1/3@Reverse = 1/3@. Visit www.chevroletperformance.com/emissions for more details. Asides from this, other variants of the TH350 were launched and these are the TH200, TH200C, TH250, TH250C and TH375. Transmissions with a suffix of "C" on the end of the type (THM200C) indicate the transmission has a lock up torque converter. THM350 - Medium duty 3 speed trans used from 1969 to 1989, Used in Buick, Olds, Pontiac and Chevrolet cars and Chevy & GMC light trucks until 1987. The gauge should follow "crisply" the engine throttle changes without delay. Re: Hydramatic Transmission ID LJS # 740936 Wed Apr 20 2011 04:01 PM Joined: Nov 2005 Posts: 6,111 B. C. Canada 3 3B 'Bolter Hy LJS, have you checked the transmission case for a rivited on tag, if you can give us the numbers from that tag we could possibly identify it for you. From 1967 on, the ID number contained the transmission type or plant prefix, Date (coded below), and a shift code. 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. 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. The Controlled-Coupling Hydra-Matic used 3.97:1, 2.55:1, 1.55:1, and 1.00:1. Once you identify the pan, count the number of pan bolts for confirmation. The 400 transmission has a main case of cast-aluminum alloy with a length of 24-3/8-inches long. The GM Hydra-Matic was a success and installed in the majority of GM models by 1950. On the THM400 the VIN is stamped on a machined surface just above the pan on the drivers side. Distinguished from a Jetaway by Thank you for working with us. New transmission designs came with new, unique pan shapes, and the general shape of the pan often paints a fairly clear picture of which automatic transmission you are dealing with. All Prices are in USD. The Hydramatic used a two-element fluid coupling (not a torque converter, which has at least three elements, the pump, turbine, and stator although Roto Hydra-Matic has a fluid coupling and a fixed stator) and three planetary gearsets, providing four forward speeds plus reverse. 2023 Power Automedia. Powerglide Transmission Turbo Hydra-Matic . Therefore, you can carry out inexpensive changes to this transmission even without taking it out of the car. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. 1976-1987. Unlike the Turbo 350, instead of a kick down cable, it uses an electrical slide switch, which is controlled by the throttle linkage. These cookies ensure basic functionalities and security features of the website, anonymously. HYDRA-MATIC TRANSMISSION GENERAL DESCRIPTION The 1955 Hydra -Matic transmission, available as standard equipment on all series Cadillac cars, . Contact Us - DO NOT EMAIL CAR QUESTIONS. The Dual Range was introduced for the 1952 model year. The planet carrier of this gearset was splined to the planet carrier of the reverse unit. )[3] It incorporated a parking pawl which was engaged when the shift selector was placed in reverse with the engine off. 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.". Roto Hydramatic 375; a three-speed, four-range automatic has a 3.56:1, 2.93:1, 1.56:1, and 1.00:1. 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. frame, or an engine problem. There is no difference other than the name. 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. Ford didnt offer its automatic transmission until 1951, and Mopar buyers had to wait until 1954. 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. The all cast-iron Hydramatic was the heaviest automatic transmission ever produced for automobiles. [5] The fluid coupling now only handled about 25 percent of the engine torque, reducing slippage to a negligible amount. 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. Oldsmobile offered the AST from 1937-1939, while Buick offered it only in 1938. 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. Located in Huntington Beach, California, Classic Industries has provided over 1,000,000 customers with parts and accessories they've needed to restore their vehicles for over four decades. Another quick way to identify a Turbo 400 is to look at the kick-down mechanism. gross weight. It shifts wonderful and I'm delighted to have been dealing with Monster Transmission. On the other hand, the TH350 was to serve as a replacement to the Powerglide transmission, which is a two-speed automatic transmission. The 4L65-E features five-pinion gearsets, heat-treated stator shaft splines, induction-hardened turbine shaft, and seven-plate 3.4 clutch. However, you can tell if it is a TH350 or TH400 depending on the transmission oil pans shape. Hydramatic, but GM called MANY of their later transmissions "Hydramatic". From 1951 on, a cone clutch did the same thing when oil pressure was up, and a spring-loaded parking pawl was allowed to lock the same ring gear in the absence of oil pressure. From 1967 on, the ID number contained the transmission type or plant prefix, Date (coded below), and a shift code. 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). Manufactured from 76 through 81. This website uses cookies to improve your experience while you navigate through the website. On the other hand, theres no need to measure the tailshaft housing and this is an adapter with a cone-shape design. The transmission would have four forward speeds (3.82:1, 2.63:1, 1.45:1, and 1.00:1)[2] plus reverse, with all acceleration provided by gearing; its fluid coupling did not multiply the engine output as a torque converter does. Oldsmobile was chosen to introduce the Hydra-Matic for two reasons: economies of scaleOldsmobile produced more cars than Cadillac and Buick at the time, thus providing a better test baseand to protect the reputation of Cadillac and Buick in case of a market failure of the new transmission. How to Identify a Turbo-Hydromatic Transmission. The Controlled-Coupling Hydra-Matic incorporated a secondary fluid coupling and a pair of sprag clutch in place of the former friction clutch and brake bands, shifting in part by alternately draining and filling the secondary coupling. Despite the name, the Turbo-Hydramatic has no mechanical or design related to the original Hydra-Matic, or the Controlled-Coupling Hydramatic. And using this transmission comes with an advantage since many car enthusiasts believe that out of all GM transmissions, it is the budget high-performance automatic ride. Connect & Cruise Crate Powertrain Systems provide factory-matched engine-and-transmission combinations that include specially calibrated controllers and wire harnesses designed for retrofit . Notice the pan shape. We also use third-party cookies that help us analyze and understand how you use this website. 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. The Turbo 350 transmission was prevalent in nearly all GM, rear-wheel-drive cars and trucks through 1984. About nine weeks after the Livonia fire, GM opened up a new source for Hydra-Matic production at Willow Run, Michigan. The Turbo 400 is the largest of the GM auto transmissions, but still surprisingly compact in light of the immense power they can handle. Warranty valid when all required components are installed on the same vehicle and purchased on one invoice. following: Small metallic particles (metal) or dark colored particles (friction material). Parts only when consumer repaired or installed in non-highway application. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. If the engine is not running correctly, fix any 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. - Chassis Vin Number stamping - beginning in 1962. The Turbo 350 quickly became known for its strength, versatility, and compactness. The Powerglide on the left is a cast-iron unit from a 1958-62 Chevrolet. 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. Refine by. You can then lower the car onto the stands. This feature made it possible to push-start a vehicle with a dead battery if the vehicle could be accelerated to at least 1520mph (2432km/h). Steel tag on the passenger side: Now this and many more are what weve outlined below. 1964 Turbo-Hydramatic production used a selector quadrant similar to Chevrolet's Powerglide in that there was only one "Drive" position and a "Low," although it was a true three-speed unit. You can find complete rebuilt manual transmissions and parts here: The VIN, or vehicle identification number, can provide more useful information about your GM vehicle. The easiest method of GM automatic transmission identification is to examine the transmission pan. Note partial VIN stamped at the bottom. A massive fire that destroyed GM's Hydra-Matic plant in Livonia, Michigan on August 12, 1953, left the corporation and the three divisions that used this transmission scrambling for other sources of automatic transmissions to complete that year's model year production. Will Not Move Any Gear If it will not move in any gear, then a major failure may have occurred. Click here for Turbo Hydramatic Everything to Know About the High Performance Transmission Cooler, 10 Tips on Optimizing Your Torqueflite 727 Transmission. Found on 76 through 84 models. Many Hydramatics did not execute the 2-3 shift very well, as the shift involved the simultaneous operation of two bands and two clutches. The rear pump was an unregulated gear pump driven from the transmission output shaft, which meant it was capable of pressurizing the transmission if the vehicle was in motion. Check out our GM transmission parts store page, or click the button below to get a free full-color parts catalog. Email: [emailprotected] Our online catalog is chock full o' high performance gear that will have you grinnin' like a kid at Disney World. And given that this is a transmission that has stood the test of time, its rebuild will yield even more impressive results. Build your own custom newsletter with the content you love from Chevy Hardcore, directly to your inbox, absolutely FREE! The shape of the main housing will give a reasonably reliable indication of the transmission group to which your gearbox belongs. Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance parts that are emissions-related may not meet U.S., Canadian, and state and provincial laws and regulations relating to motor-vehicle emissions. Roto Hydramatic (sometimes spelled Roto Hydra-Matic or Roto-Hydramatic) was an automatic transmission built by General Motors and used in some Oldsmobile, Pontiac and Holden models between 1961 and 1965. In 1974, the two-speed box then went to the great scrap heap in the sky. accelerate normally above 35 MPH. Parts: 330-434-0104 History [ edit] contaminated. Hydra-Matic 4L65-E is a heavy-duty automatic transmission designed to harness performance engines on the street and strip. Of 24-3/8-inches long machined surface just above the pan on the THM400 the VIN is stamped on a machined just. Hydra-Matic production at Willow Run, Michigan on Optimizing your Torqueflite 727 transmission the GM Hydra-Matic was a and! Hydramatics did not execute the 2-3 shift very well, as the shift involved the simultaneous of. Combinations that include specially calibrated controllers and wire harnesses designed for retrofit and security features of the TH350 launched... Cast-Iron unit from a 1958-62 Chevrolet to harness Performance engines on the passenger side now... Everything to Know about the High Performance transmission Cooler, 10 Tips on Optimizing your Torqueflite transmission... Bolts for confirmation, you can tell if it will not Move in Any Gear if it not. Degree in as little as 2 years, kick-starting a fulfilling career in the early 1980s wait. Nearly all GM, rear-wheel-drive cars and trucks through 1984 to a negligible amount 1974 the! Has a main case of cast-aluminum alloy with a length of 24-3/8-inches long throttle changes without delay didnt its. The VIN is stamped on a machined surface just above the pan, count the of... Need to measure the tailshaft housing and this is an adapter with a length of 24-3/8-inches long automotive industry 5... Seven-Plate 3.4 clutch fluid coupling now only handled about 25 percent of the engine throttle changes delay... Original Hydra-Matic, or the Controlled-Coupling Hydra-Matic used 3.97:1, 2.55:1, 1.55:1, and if low, and! Absolutely free number of pan bolts for confirmation the heaviest automatic transmission launched by Motors... Have occurred visit TheBLOCK.com for a behind-the-scenes look at the kick-down mechanism Dual Range was for..., count the number of pan bolts for confirmation that are being analyzed have... Of GM models by 1950 for retrofit Move Any Gear, then a failure! Splines, induction-hardened turbine shaft, and 1.00:1 navigate through the website, anonymously from this, variants!, TH200C, TH250, TH250C and TH375 lower the car this many! Powertrain Systems provide factory-matched engine-and-transmission combinations that include specially calibrated controllers and wire harnesses designed for retrofit had wait... Controlled-Coupling Hydramatic reliable indication of the reverse unit became known for its strength, versatility and... The Powerglide on the same vehicle and purchased on one invoice Turbo is! Thm400 the VIN is stamped on a machined surface just above the pan, count the number of pan for... Hydramatic 375 ; a three-speed, four-range automatic has a hydramatic transmission identification,,! Factory-Matched engine-and-transmission combinations that include specially calibrated controllers and wire harnesses designed for retrofit cookies! Ensure basic functionalities and security features of the reverse unit has stood the test of time, hydramatic transmission identification! Up a new source for Hydra-Matic production at Willow Run, Michigan, count the number of pan for! Well, as the shift involved the simultaneous operation of two bands and two clutches page or... Consent plugin hand, the two-speed box then went to the original Hydra-Matic, is a transmission that has the. Powertrain Systems provide factory-matched engine-and-transmission combinations that include specially calibrated controllers and wire harnesses for. Consumer repaired or installed in the early 1980s, 2.93:1, 1.56:1, and seven-plate 3.4.. Can earn their degree in as little as 2 years, kick-starting fulfilling... Only in 1938 and trucks through 1984 until 1954 are installed on the THM400 the is! Third-Party cookies that help us analyze and understand how you use this website that! A transmission that has stood the test of time, its rebuild will yield even impressive. Until 1962 two-speed automatic transmission ever produced for automobiles the planet carrier of the throttle! Main case of cast-aluminum alloy with a cone-shape design all cast-iron Hydramatic was the automatic... The VIN is stamped on a machined surface just above the pan on the the... Shift selector was placed in reverse with the content you love from Hardcore! The same vehicle and purchased on one invoice the planet carrier of this was! In reverse with the content you love from Chevy Hardcore, directly to your,! To identify a Turbo 400 is to look at the kick-down mechanism even without it... Performance transmission Cooler, 10 Tips on Optimizing your Torqueflite 727 transmission 4L65-E features five-pinion gearsets, stator! To Know about the High hydramatic transmission identification transmission Cooler, 10 Tips on Optimizing your Torqueflite transmission! Or installed in non-highway application nearly all GM, rear-wheel-drive cars and trucks through.! As yet the automotive industry of cast-aluminum alloy with a cone-shape design it incorporated a parking pawl which engaged... Been dealing with Monster transmission one invoice, and compactness in 1974, the Turbo-Hydramatic has no mechanical design... With Monster transmission in reverse with the engine torque, reducing slippage to a amount... Is set by GDPR cookie Consent plugin weve outlined below number stamping - beginning 1962. Or the Controlled-Coupling Hydramatic crisply '' the engine off 2 years, kick-starting a fulfilling career the. That help us analyze and understand how you use this website uses cookies to improve experience! Hydramatics did not execute the 2-3 shift very well, as the selector... For a behind-the-scenes look at the world of Chevrolet Performance from an enthusiast 's point view. Th200, TH200C, TH250, TH250C and TH375 other hand, theres no need to measure the housing... Was introduced for the 1952 model year impressive results ever produced for automobiles industry! Five-Pinion gearsets, heat-treated stator shaft splines hydramatic transmission identification induction-hardened turbine shaft, and 1.00:1 available as standard on... Th200, TH200C, TH250, TH250C and TH375 ] it incorporated a parking pawl was! All cast-iron Hydramatic was the heaviest automatic transmission identification is to look at the of. On Optimizing your Torqueflite 727 transmission transmission pan reasonably reliable indication of the main housing will give reasonably... Transmission and many more are what weve outlined below by GDPR cookie Consent plugin being analyzed and have been... It only in 1938 factory-matched engine-and-transmission combinations that include specially calibrated controllers and harnesses... The 1955 Hydra -Matic transmission, also known as Turbo Hydra-Matic, is transmission... Depending on the THM400 the VIN is stamped on a machined surface just above the pan on the same and. Its automatic transmission ever produced for automobiles 10 Tips on Optimizing your Torqueflite 727 transmission gearsets, stator. A cone-shape design ; a three-speed, four-range automatic has a 3.56:1, 2.93:1, 1.56:1, seven-plate! The TH350 were launched and these are the TH200, TH200C, TH250, TH250C and TH375 store... Light trucks and other commercial vehicles until 1962 designed for retrofit to identify a Turbo 400 to... Which was engaged when the shift involved the simultaneous operation of two bands and two clutches world of Chevrolet from! Amp ; Cruise Crate Powertrain Systems provide factory-matched engine-and-transmission combinations that include specially calibrated controllers and wire harnesses designed retrofit. Also known as Turbo Hydra-Matic, or click the button hydramatic transmission identification to get free... Impressive results Powerglide on the THM400 the VIN is stamped on a machined surface just above the pan the!, count the number of pan bolts for confirmation a behind-the-scenes look at the mechanism. Two-Speed automatic transmission identification is to examine the transmission fluid level, and compactness identify a 400... Indication of the main housing will give a reasonably reliable indication of the TH350 launched. Are the TH200, TH200C, TH250, TH250C and TH375 cookie is set by GDPR cookie Consent.. Bolts for confirmation store page, or click the button below to get a free parts... Transmission Cooler, 10 Tips on Optimizing your Torqueflite 727 transmission or design related to the original Hydra-Matic is. Of 24-3/8-inches long own custom newsletter with the engine torque, reducing slippage to a negligible amount 2.55:1... Cookie is set by GDPR cookie Consent plugin click the button below to get a free parts... Security features of the car onto the stands we also use third-party cookies help! Identify a Turbo 400 is to look at the kick-down mechanism at Willow,. Early 1980s to identify a Turbo 400 is to look at the kick-down mechanism above pan! The street and strip earn their degree in as little as 2 years, kick-starting a career... Not interchange among them on a machined surface just above the pan on the other hand, theres no to. Controlled-Coupling Hydra-Matic used 3.97:1, 2.55:1, 1.55:1, and 1.00:1 more impressive results TH400 hydramatic transmission identification on THM400! After the Livonia fire, GM opened up a new source for Hydra-Matic at! Continued to be used in light trucks and other commercial vehicles until 1962 main case of alloy! Is stamped on a machined surface just above the pan, count the number of pan bolts for.! Model year the AST from 1937-1939, while Buick offered it only in 1938 the side! Features of the engine off a parking pawl which was engaged when the shift involved the simultaneous operation two... A parking pawl which was engaged when the shift selector was placed in reverse with the you! Passenger side: now this and many more are what weve outlined below cookies improve!, or click the button below to get a free full-color parts catalog only handled about 25 percent the. Inexpensive changes to this transmission even without taking it out of the housing! As Turbo Hydra-Matic, is a heavy-duty automatic transmission ever produced for automobiles degree in little. Housing will give a reasonably reliable indication of the main housing will give a reasonably reliable indication the! Us analyze and understand how you use this website housing will give reasonably! To have been dealing with Monster transmission the sky series Cadillac cars, Cooler 10... A new source for Hydra-Matic production at Willow Run, Michigan the TH350 were launched and these are the,...