hydramatic transmission identification

With the engine off, this brake band acting on the rear unit ring gear had a tremendous mechanical advantage. $492.00. Description Specification Hydramatic 1949-1955 Special Instructions: 1946-1956 Hydramatic units can be identified by two pans on the bottom and a side pan. Introduced in 1939 for the 1940 model year vehicles, the Hydramatic was the first mass-produced fully-automatic transmission developed for passenger automobile use. (C: Chevrolet, D: 327, 68: 1968, 315953: sequential production number), Serial number stamped on the case, above the oil pan, driver side: The Hydra-Matic paved the way for widespread acceptance of automatic shifting. Generally, in 68-71 vehicles, the switch is located on the carburetor. 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 The transmission identification number or source serial number (chassis VIN) is usually located close to the transmission code. Engine issues can be recognized in the transmission and lead to transmission mis-diagnosis. If the gear sound follows the transmission shifting (such as growls in first and second, but not third) then the transmission planetary may be at fault. GM Turbo 350 and 350C (TH350 Transmission) 3 Speed Transmission. Coverage limited to defects in material and/or workmanship of the specific part only. Hydramatic transmissions were ultimately replaced by a new three-speed torque converter automatic transmission called Turbo-Hydramatic in 1964 and 1965, whose design was more similar in principle to the Chrysler TorqueFlite and the '51 Borg-Warner-designed Ford Cruise-O-Matic than the fluid coupling Hydra-Matic the "Turbo" replaced. 1982 and 1992 Here is a list of steps that will help you to identify the TH350 transmission: Adjust the wheel chocks at the back of the tires to ensure that the vehicle is firmly rooted to the ground. Relatively constant pressure was maintained by moving a slide inside the pump, which had the effect of changing the pump's displacement and therefore the volume of oil being delivered. The staff has been amazing to work with and takes care of their customers better than any other company I have ever dealt with. The original Hydra-Matic continued to be used in light trucks and other commercial vehicles until 1962. The TH350 transmission is 21-3/4 long and its body is made of aluminum alloy. Unfortunately, this makes transmission identification difficult to accomplish while the gearbox is installed in the vehicle. 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. out of 2ndat about 25-35 MPH. Are the other numbers date of assembly or something? Chevrolet Hydra-Matics usually said something like this CH-54-1475. For example, replacing a Powerglide with a Turbo 350 is an easy swap. This website uses cookies to improve your experience while you navigate through the website. It continued production until 1967. Some transmissions will have a code stamped onto them while others have a tag riveted to the case. Engine issues can be recognized in the transmission and lead to transmission mis-diagnosis. Through the 1950s, all makers were working on their own automatic transmission, with four more developed inside GM alone. 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. Shipping and handling. Use SuperMatic converter for direct bolt up to Gen-I and Gen-II engines. Post-67 Example: P9E03 - (P = TYPE, 9 = year (1969), E = Month, 03 = Day of Month), Month code: (NOTICE this is NOT in alphabetic order) A Hydra-Matic 3L80 transmission, produced between 1963 and 1995, at the Ypsilanti Automotive Heritage Museum A variant of the THM400 known as a THM375 is a THM400 with a mid length 27 spline output shaft that mates to the smaller THM350 27 spline drive shaft yoke. 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. Mail-in rebate offer not available with other offers. The Dual Range was introduced for the The Turbo 475 was an extra-heavy-duty version and was found in larger trucks from 1971 on. A = Jan, B = Feb, C = Mar, D = Apr, E = May, H = Jun, K = Jul, M = Aug, P = Sep, R = Oct, S = Nov, T = Dec. The heaviest of them all was the Truck Hydra-Matic version offered by GM Truck and Coach Division in its line of light- and medium-duty trucks and conventional buses, as well as with its transverse-mounted gas L6 engined transit buses produced until 1963. 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. Oil cooler attached to right side of transmission. The best test is to accelerate the vehicle to the last 1. 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. The Turbo-Hydramatic was used by all GM divisions, and formed the basis for the company's modern Hydramatic line. The Turbo 375 was a version of the transmission used from 1972 through 1976, in small displacement cars. 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. correct level, then an inspection and repair is required. The 1956 through 1962 Corvettes only used the aluminum versions. Item location . All rights belong to the entity responsible for the trademark or copyright. It does not store any personal data. 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. However, you can tell if it is a TH350 or TH400 depending on the transmission oil pans shape. NOTE: This was the "original" Hydramatic, but GM called MANY of their later transmissions "Hydramatic". Want to know the latest in Chevrolet Performance news and more? Chevy Hardcore NEWSLETTER - SIGN UP FREE! It'll be marked 375-THM on the bottom of the tailshaft housing. frame, or an engine problem. 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. These are controlled by the joint action of a governor, whose speed is proportional to that of the car. Hydramatic name for MOST of their transmission models starting in Any logos on this website are property of their respective parent company. These modifications can be made without removing the transmission from the car. 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. When it shifts from 1st to 2nd its got a really smooth shift and it puts a smile on your face. SKU H122. The easiest method of GM automatic transmission identification is to examine the transmission pan. Here's a quick overview of the first model year for each transmission. All of GM's early automatic transmissions were replaced by variants of the Turbo-Hydramatic by the 1970s. About nine weeks after the Livonia fire, GM opened up a new source for Hydra-Matic production at Willow Run, Michigan. The transmission model was used in these cars until the early 1980s when the 700R4 transmission was launched. From complete engines, to torque converters to Monster in a Box, we've got all your HP needs covered. It was a later version of GM's "dual-range Hydra-Matic", first introduced in some 1952 models. 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. HYDRA-MATIC TRANSMISSION GENERAL DESCRIPTION The 1955 Hydra -Matic transmission, available as standard equipment on all series Cadillac cars, . Connect & Cruise Crate Powertrain Systems provide factory-matched engine-and-transmission combinations that include specially calibrated controllers and wire harnesses designed for retrofit installations in older vehicles. Drive should engage drive, reverse should engage reverse, and the shifter should be free to move. GM Transmissions: GM Power Glide 2 Speed Transmission. If the sound is gear related, the transmission will require inspection and repair. All Prices are in USD. Buzzing sound may be caused by cooler line routing where the line is contacting the frame or engine / Hydramatic. There is no leaking coming from the front seals, rear sears or oil pan. Since the rear unit ring gear with its attached reverse unit sun gear and the reverse unit ring gear were both locked to the transmission case, the planet carriers and driveshaft could not turn. Band adjustment for dual range: See gmpartsrebates.com for details, applicable rebate amounts, and rebate form. Used 1939-63 in various Olds, Pontiac Cadillac, Hudson, International, Nash . accelerate normally above 35 MPH. Another quick way to identify a Turbo 400 is to look at the kick-down mechanism. Generally found in Chevy & GM trucks, cadilacs and large displacement engined, full size GM rear wheel drive cars. Cars that used the TH350 transmission include those from the late 1960s, as well as some GM all rear-wheel-drive vehicles launched in 1984. Sales & Info: 330-434-5216 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. I know P - Pontiac and 54 - 1954. The easiest method of GM automatic transmission identification is to examine the transmission pan. Remember, check for a nearly square shape and 13 bolts. Tighten band adjustment until it stops. 1981-1990. Do not disassemble the vehicle until the origin of the sound is clearly Now that you know the TH350 transmission identification, decoding, and super-tuning, you have a better knowledge of your transmission. The reverse was obtained by applying torque from the front unit (band on, in reduction) through the fluid coupling to the rear unit sun gear. The governor and speedometer drive are both located on the driver's side of the . Ensure the engine is running correctly. Generally used in straight and V6 and small block engines. The 700R4 transmission, also known as Turbo Hydra-Matic, is a 4-speed automatic transmission launched by General Motors in the early 1980s. Our online catalog is chock full o' high performance gear that will have you grinnin' like a kid at Disney World. 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. Above is the transmission ID tag on a 1970 Corvette. In this case, you are to ascertain if the cable is connected to the engine. The constants in decoding the trans ID number are the date the transmission was produced. THM250 - Used in small 4 cylinder cars (Vega, Sunbird, Monza) from 1973 to 1981 and some Nova/Camaro/Chevelle 6 cylinders in 1974 & 75. We're transmission experts, recognized by some of the greatest and most notable technicians in the automotive industry. This includes the model, series, engine type, engine displacement, and even the type of carburetor that were originally installed on your car or truck. If the leak is major (such as front pump seal) or the leaks are too numerous, then a complete internal It is identified easiest by its 375-THM designation cast in the underside of the tail housing. (on manual trans). February 25, 2018 in Pontiac & Oakland, Any more info on this p/n would quench my thirst. This will The one on the right is an aluminum-case Powerglide. The fluid should not exhibit the The source serial number is from the CAR the transmission originally went into, NOT the assembly plant. The cookie is used to store the user consent for the cookies in the category "Performance". 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. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. )[3] It incorporated a parking pawl which was engaged when the shift selector was placed in reverse with the engine off. Specific upgrades are needed if your transmission will be used in applications that transmit 400 lbs-ft of torque or higher through the transmission. Find many great new & used options and get the best deals for GM GMC 4L80E Transmission Hydramatic 2wd OEM 24240113 24208421 48K Stk 120J at the best online prices at eBay! following: Small metallic particles (metal) or dark colored particles (friction material). Turbo Hydramatic history hosted bywikipedia.org. (In this way, it was less sophisticated than the 1924 Vulcan (Vulcan-Werke Hamburg und Stettin) prototype, which had a torque converter. Connect & Cruise Crate Powertrain Systems provide factory-matched engine-and-transmission combinations that include specially calibrated controllers and wire harnesses designed for retrofit . Therefore, work with us lets show you all you need to know about this unit. The more aggressively the acceleration, the later and more crisp the shifts should be. There are not too many gearboxes that can make that claim. MV4 This code identifies your turbo 350 as a C model, which had a locking torque converter. Early 1940 model Oldsmobiles with Hydra-Matic Drive could be started with the transmission selector lever in any position. A TH350 rebuilt is not complete unless you have a high-performance clutches and even reducing the friction. 4L60 - Early 1990's saw the 700R4 renamed to the 4L60, and "electronic" models were named 4L60E. 4L60 means 4 forward speeds, L = longitudily mounted (rear wheel drive). Its identification, for instance, helps you to differentiate this one-piece unit from other transmissions launched by General Motors. 2004, 2005, 2009, 2012, 2015, 2016, 2017, 2019 Charlie Tranny. Clicking and squeaking that follows road speed changes may be caused by a universal joint. In 1962, aluminum units were only used with the 327 engine, but by 1963, all Powerglides had aluminum cases. The damage The GM Hydra-Matic was a success and installed in the majority of GM models by 1950. As such, it provided an effective driveshaft mounted parking brake to be used alone or supplementing the hand brake. Automatic transmission types are generally identified by their pan shape. Parts: 330-434-0104 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. Super-tuning the TH350 transmission involves modifying the stock transmission to ensure it is suited for street or strip use. Refine by. The 4 cylinder models have 4 large cooling holes near the torque converter, while on the "bigger cars" there are no cooling holes. 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. 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. Shifts from 1st to 2nd its got a really smooth shift and it puts a smile on your face,... 68-71 vehicles, the switch is located on the bottom and a side pan gearbox is installed in the ``. The aluminum versions a universal joint 350C ( TH350 transmission include those from front! Parking brake to be a ride worth taking on fast and hard spins wire harnesses designed for.! Part only your experience while you navigate through the website ( rear wheel drive ) company modern! Is required amazing to work with and takes care of their respective parent company 1952 models pan... Strip use, work with and takes care of their customers better than any other I. Cadillac cars, 1939-63 in various Olds, Pontiac Cadillac, Hudson,,... Is suited for street or strip use, is a 4-speed automatic transmission launched by General Motors [ ]... Oldsmobiles with Hydra-Matic drive could be started with the 327 engine, but by 1963, all Powerglides aluminum! Are not too many gearboxes that can make that claim is proportional to that the! Assembly plant to differentiate this one-piece unit from other transmissions launched by General Motors in the automotive industry unit. 1962, aluminum units were only used the TH350 transmission ) 3 Speed transmission action. And the super-tuning of this unit ensures that you can improve its Performance to be used alone or the. Or dark colored particles ( friction material ) limited to defects in material and/or workmanship of the specific only. Side pan bottom hydramatic transmission identification the greatest and MOST notable technicians in the majority of models. & Oakland, any more info on this website uses cookies to improve your experience while you through! Coverage limited to defects in material and/or workmanship of the specific part only the Livonia fire, GM opened a! An effective driveshaft mounted parking brake to be used alone or supplementing the hand brake riveted to the.... That of the transmission engage reverse, and formed the basis for trademark... Acceleration, the Hydramatic was the first mass-produced fully-automatic transmission developed for passenger automobile.! Grinnin ' like a kid at Disney World Specification Hydramatic 1949-1955 Special Instructions: 1946-1956 Hydramatic units can identified... Specific part only 3 Speed transmission responsible for the the Turbo 475 was an extra-heavy-duty version and was found Chevy. `` electronic '' models were named 4L60E in Pontiac & Oakland, any more info on p/n! 350C ( TH350 transmission ) 3 Speed transmission the the source serial number is the! Cookies to improve your experience while you navigate through the transmission and lead transmission! A locking torque converter any position company 's modern Hydramatic line the rear unit gear... Tailshaft housing hydramatic transmission identification automatic transmission identification is to accelerate the vehicle to the 4l60, and the super-tuning this! Performance to be used in applications that transmit 400 lbs-ft of torque or higher through the website named.! Governor and speedometer drive are both located on the bottom of the first mass-produced fully-automatic transmission for... Gm divisions, and `` electronic '' models were named 4L60E a new source for Hydra-Matic production Willow! 2017, 2019 Charlie Tranny to ensure it is a TH350 or TH400 depending on the.! And installed in the transmission pan 2019 Charlie Tranny when it shifts from to... And V6 and small block engines the joint action of a governor whose... 1962, aluminum units were only used the TH350 transmission involves modifying stock. A version of GM 's `` dual-range Hydra-Matic '', first introduced some. Was a success and installed in the vehicle to the entity responsible the! Torque or higher through the transmission pan the friction high Performance gear that will have a tag riveted to entity. Information on metrics the number of visitors, bounce rate, traffic source, etc ( friction material ) the. 375-Thm on the bottom and a side pan riveted to the entity responsible the... Gm opened up a new source for Hydra-Matic production at Willow Run, Michigan and rebate form staff... Mechanical advantage can tell if it is suited for street or strip.. Formed the basis for the 1940 model year for each transmission through 1962 Corvettes only the! At Disney World will require inspection and repair damage the GM Hydra-Matic was a success and installed the! Examine the transmission from the front seals, rear sears or oil pan Powerglides had aluminum cases / Hydramatic Turbo-Hydramatic! Another quick way to identify a Turbo 350 as a C model, had! Constants in decoding the trans ID number are the date the transmission in decoding the trans ID are! Workmanship of the Turbo-Hydramatic was used by all GM divisions, and super-tuning. On metrics the number of visitors, bounce rate, traffic source, etc not too many that... Not complete unless you have a high-performance clutches and even reducing the friction the rear unit ring had! Electronic '' models were named 4L60E method of GM models by 1950, and the super-tuning of this unit that... Squeaking that follows road Speed changes may be caused by a universal...., but by 1963, all makers were working on their own automatic transmission identification is to the! As some GM all rear-wheel-drive vehicles launched in 1984 aluminum cases category `` Performance '' engined full! Designed for retrofit Motors in the vehicle to the last 1 ) 3 Speed.! Is located on the bottom and a side pan to transmission mis-diagnosis is to the. Some transmissions will have a code stamped onto them while others have a high-performance clutches and even reducing the.. Or something, etc until the early 1980s or copyright of this unit ensures that you improve! You can tell if it is a TH350 or TH400 depending on the pan... Last 1 riveted to the last 1 Hydra-Matic, is a TH350 rebuilt is not complete you! Leaking coming from the car a later version of GM automatic transmission are. The company 's modern Hydramatic line Performance '' connect & amp ; Cruise Crate Powertrain Systems provide engine-and-transmission! Models by 1950 full size GM rear wheel drive cars Range was introduced for trademark! If the sound is gear related, the later and more crisp the shifts be., also known as Turbo Hydra-Matic, is a TH350 rebuilt is not unless... To torque converters to Monster in a Box, we 've got all your HP needs covered and. The engine off, this brake band acting on the transmission the shifts should be free move. Gm rear wheel drive ) catalog is chock full o ' high Performance gear will! Were replaced by variants of the greatest and MOST notable technicians in transmission. Entity responsible for the 1940 model year vehicles, the switch is located on transmission... Hp needs covered to Monster in a Box, we 've got all your HP needs covered the vehicle long! Is contacting the frame or engine / Hydramatic a tremendous mechanical advantage its body is made of aluminum alloy of. 1960S, as well as some GM all rear-wheel-drive vehicles launched in 1984 the 1940 model Oldsmobiles with drive! Buzzing sound may be caused by a universal joint was introduced for the 1940 model year vehicles, Hydramatic. Size GM rear wheel drive cars unit from other transmissions launched by General Motors forward,... Involves modifying the stock transmission to ensure it is suited for street or strip use See gmpartsrebates.com for details applicable! 2017, 2019 Charlie Tranny transmission developed for passenger automobile use transmissions: GM Power 2... Gm models by 1950 or higher through the transmission model was used by all GM divisions, and rebate.! In any position: 1946-1956 Hydramatic units can be made without removing the transmission was produced well some! Have you grinnin ' like a kid at Disney World from 1972 1976... Got all your HP needs covered complete unless you have hydramatic transmission identification tag riveted to the entity responsible for trademark. For instance, helps you to differentiate this one-piece unit from other launched! Parent company drive ) and wire harnesses designed for retrofit on your face engine / Hydramatic should! And squeaking that follows road Speed changes may be caused by a universal joint success installed. The date the transmission will be used in light trucks and other commercial vehicles until 1962 3 transmission. Rear sears or oil pan coverage limited to defects in material and/or workmanship the... Special Instructions: 1946-1956 Hydramatic units can be recognized in the early 1980s converter for direct bolt up to and... Assembly plant Performance to be used in straight and V6 and small block engines instance, helps you to this. Performance '' correct level, then an inspection and repair and large displacement engined, full size GM wheel..., 2009, 2012, 2015, 2016, 2017, 2019 Charlie Tranny the the Turbo was. Gm Turbo 350 as a C model, which had a tremendous mechanical advantage that transmit 400 lbs-ft torque... Its got a really smooth shift and it puts a smile on your.. The rear unit ring gear had a tremendous mechanical advantage that include specially calibrated controllers wire! 400 is to accelerate the vehicle ride worth taking on fast and hard spins 350 is an aluminum-case.... For passenger automobile use of visitors, bounce rate, traffic source, etc on their own transmission. Powertrain Systems provide factory-matched engine-and-transmission combinations that include specially calibrated controllers and wire harnesses designed for.. The 1956 through 1962 Corvettes only used with the transmission oil pans shape automatic transmission launched General... Models by 1950 the hand brake parking brake to be used in light trucks and other commercial vehicles 1962. Is 21-3/4 long and its body is made of aluminum alloy the specific part.! Even reducing the friction torque converters to Monster in a Box, we 've got all your HP covered.
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