It continued production until 1967. Remember, check for a nearly square shape and 13 bolts. 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. 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 original Hydra-Matic continued to be used in light trucks and other commercial vehicles until 1962. How to Identify Your Transmission TH350 and TH400 Transmissions can be identified by the location of the Modulator and by the shape of the transmission pan. Check transmission fluid level. It was not as smooth as some competitors' transmissions (notably Buick's Dynaflow), but was more efficient, especially at highway speeds. article. If all looks good, try another modulator. TH350 - Modulator is located at the back of the transmission case. Some transmissions will have a code stamped onto them while others have a tag riveted to the case. Free shipping for many products! Unfortunately, this makes transmission identification difficult to accomplish while the gearbox is installed in the vehicle. Description Specification Hydramatic 1949-1955 Special Instructions: 1946-1956 Hydramatic units can be identified by two pans on the bottom and a side pan. Jointly developed by Chevy and Buick, it is also known as the CBC (Chevrolet-Buick combined) 350. Valve actuated transmission is currently in use. It's a light duty version of the THM400, has ABSOLUTELY NO RELATION to the THM375B, and was found in 1972 to 1976 full-size cars. Tags: Hydramatic , 1949 , 1955 , Cadillac Thank you Monster 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. Summershandy While there are no distinctive pans and bolt counts to make transmission identification simple, 4-speed manual transmissions can be generally identified by examining the side profile. 4L60 means 4 forward speeds, L = longitudily mounted (rear wheel drive). 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. Are the other numbers date of assembly or something? Sales & Info: 330-434-5216 GearStar Performance Transmission Distinguished from a Jetaway by 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. The cookie is used to store the user consent for the cookies in the category "Other. gross weight. It's easy! 1962-1973. 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. On 72-77 vehicles, the switch is located over the accelerator pedal. It shifts wonderful and I'm delighted to have been dealing with Monster Transmission. It is also important to measure the length of the transmission. Can be tricky. Post-67 Example: P9E03 (P = TYPE, 9 = year (1969), E = Month, 03 = Day of Month), Month code: It was phased out of use and superseded by GMs 700R4 starting in 1982. By clicking Accept, you consent to the use of ALL the cookies. Tighten band adjustment until it stops. Just curious and couldn't find anymore info. Oldsmobile offered the AST from 1937-1939, while Buick offered it only in 1938. NOTE: This was the "original" Hydramatic, but GM called MANY of their later transmissions "Hydramatic". (AODE & 4R70W). The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". You Make The, SEMA 2022: GEARWRENCH Leveled Up With Distinct Quality Hand, Reignite Your Cat Eye Silverado Headlights With, SEMA 2022: Paragon Corvette Adds Performance Parts To, PRI 2022: FuelTech Talks About The Tech Of The FT700, PRI 2022: Concept Performance Now Offers Aluminum LTR, PRI 2022: Get Locked In With Forgeline Beadlock, Creative Automotion: The Art of Farmtruck &, Randy Bolig The Media Mover And Shaker Behind Chevy, How Ken Lingenfelters Love for Corvettes Benefits So, Shop Tour: Prestige Motorsports Is Your One-Stop Hot Rod, Full Factory Tour: How Edelbrock Makes Its Cast Aluminum, HOLY SHIP! 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. 2023 Power Automedia. 1946-1951 Hydramatic Rear Band. Allow 6 to 8 weeks for delivery of debit card. Turbo Hydramatic history hosted bywikipedia.org. This worked better as the anchor would not grind on the external teeth if that ring gear were turning (that is unless the engine stalled as reverse was engaged). 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. In the same vein, youre well informed on how to improve it to be more durable and handle street racing. Hydramatic It is widely known as one of the best automatic transmissions ever built. So if Hydramatics were all built at this plant in this number sequence (I think they were) then your number 115,129would be right in the middle of the model year. Count the In the early 1950s various manufacturers without the resources to develop a proprietary automatic transmission bought Hydra-Matics from GM. ID MCP. Thank you for working with us. 1956-1964 4 speed Controlled coupling HydraMatic, also known as Cadillac 315 or P 315 HydraMatic, Oldsmobile Jetaway, Pontiac Super HydraMatic. From 1967 on, the ID number contained the transmission type or plant prefix, Date (coded below) and a shift code. 1946-1951 Hydramatic Rear Band. The HydraMatic 350 transmission was prevalent in nearly all GM, rear-wheel-drive cars and trucks through 1984. We will safeguard your e-mail and only send content you request. 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). GM Transmissions: GM Power Glide 2 Speed Transmission. The limit will be dependent on the vehicles gear ratio, weight, driving style, and even traction. Offer valid 1/1/23 to 12/31/23. Drive should engage drive, reverse should engage reverse, and the shifter should be free to move. Never underestimate the mighty post-war Powerglide. (1: Chevrolet, 8: 1968, L: Van Nuys, CA, 165790: last 6 digits of VIN). The transmission model was used in these cars until the early 1980s when the 700R4 transmission was launched. transmission and many parts do not interchange among them. 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. Classic car restoration is not a new hobby, and the older the project car, the more likely it is that someone has installed a different transmission at some point along the way. The driver had to shut off the engine and then place the transmission in reverse in order to lock the driveline to prevent the car from moving. 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. 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. No miss firing under load, should have sufficient power, and a smooth idle in and out of gear. Copyright 2023, Antique Automobile Club of America. Almost 200,000 had been sold by the time passenger car production was halted for wartime production in February 1942. On the THM350, the VIN will be stamped on either the drivers side housing near the shifter, on the right side of the housing just above the pan, or on a boss behind the bellhousing flange on the passenger side of the transmission. 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 GM produced many transmission variants over the years, we included some of them here, but our main focus is identifying the fluid pans for Powerglide, Turbo 350, and Turbo 400. When it shifts from 1st to 2nd its got a really smooth shift and it puts a smile on your face. If fluid is at 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. This includes but is not limited to Ford, Chevrolet, General Motors, Dodge, Mopar, or any other trademarked or copywritten content. He currently owns a '95 Corvette, '76 Cadillac Seville, '99 LS1 Trans Am and big old Ford Van. $115.00. Transmissions with a suffix of "C" on the end of the type (THM200C) indicate the transmission has a lock up torque converter. These modifications can be made without removing the transmission from the car. Engine issues can be recognized in the transmission and lead to transmission mis-diagnosis. Many Hydramatics did not execute the 2-3 shift very well, as the shift involved the simultaneous operation of two bands and two clutches. Hydra-Matic 4L65-E is a heavy-duty automatic transmission designed to harness performance engines on the street and strip. transmission. *This transmission is part of a joint-venture between General Motors and Ford Motor Company to split development of two transmissions, a longitudinal 10-speed and transverse 9-speed. The Dual Range was introduced for the 1952 model year. And given that this is a transmission that has stood the test of time, its rebuild will yield even more impressive results. M33 This standard Turbo 350 code identifies it as a standard Turbo 350. accelerate normally above 35 MPH. These cookies ensure basic functionalities and security features of the website, anonymously. This modulator has been stationed at the transmissions side and there may be a rubber vacuum line connected to it. See gmpartsrebates.com for details, applicable rebate amounts, and rebate form. CD-68-315953 Ascertain the number of bolts that are secured to the transmission oil pan. Shift the Always begin ALL transmission diagnosis with the following initial steps: Transmission fluid, the life blood of any transmission, should be checked for proper level, but also evaluated for condition. I promise you that the next transmission I have to replace or any other person I hear of needing a transmission I will be heavily promoting Monster Transmission and tell them that I personally use Monster Transmission. These passion projects were brought to life with a convenient Connect & Cruise Powertrain System. )[3] It incorporated a parking pawl which was engaged when the shift selector was placed in reverse with the engine off. Build your own custom newsletter with the content you love from Chevy Hardcore, directly to your inbox, absolutely FREE! 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. The 3L80HD would be the THM475 (heavy duty unit). correct level, then an inspection and repair is required. 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. Sign up for a new account in our community. Late shifting generally caused by an issue with the vacuum signal to the vacuum modulator. Super-tuning the TH350 transmission involves modifying the stock transmission to ensure it is suited for street or strip use. GM Turbo 400 TH400 Transmission 3 Speed Transmission. 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. It can be identified by "375-THM" cast into the tailhousing. The easiest method of GM automatic transmission identification is to examine the transmission pan. There is no leaking coming from the front seals, rear sears or oil pan. Recommended Posts. On the THM400 the VIN is stamped on a machined surface just above the pan on the drivers side. All Oldsmobiles installed with the Hydramatic had at the bottom edge of the front fender directly behind the front wheel a badge that said "Futuramic" which identified an Oldsmobile approach to simplified driving, and the presence of an automatic transmission. 3L80 stands for three gears, longitudinal mount (rear-wheel drive), and the 80 signifies that it can handle 8,000 lbs. Today, GM uses a simple naming scheme for their transmissions, with the "Hydra-Matic" name used on most automatics across all divisions. following: Small metallic particles (metal) or dark colored particles (friction material). Found on 76 through 84 models. All Prices are in USD. The Turbo 400 is the largest of the GM auto transmissions, but still surprisingly compact in light of the immense power they can handle. WE ARE READY TO SUPPORT YOUMon - Fri 9:00am - 6:00pm EST. The unit comes with a bell housing and weighs 120 lbs. 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. 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). Last edited on 26 December 2022, at 17:33, Learn how and when to remove this template message, Vulcan (Vulcan-Werke Hamburg und Stettin), "Hydra-Matic History: The First Automatic Transmission", World's First Mass Produced Automatic Transmission, https://en.wikipedia.org/w/index.php?title=Hydramatic&oldid=1129688607, This page was last edited on 26 December 2022, at 17:33. In the below example it is a TH400 for the 1970 model year (70) for a 454 engine (CR) and built on the 330th day of 1969 (330). GM ASEP technicians can earn their degree in as little as 2 years, kick-starting a fulfilling career in the automotive industry. Monster Transmission & Performance does not claim ownership of any outside trademarked brands or images. Check for engine vacuum leaks, collapsed vacuum hoses, misrouted vacuum lines at the Theres a cable that may be connected to the transmissions side and next to the location of the shifter linkage. resealing the leak (such as the pan gasket, speedometer O-ring, tail shaft seal). The 700R4 transmission, also known as Turbo Hydra-Matic, is a 4-speed automatic transmission launched by General Motors in the early 1980s. The length of the unit can also tell you a few things. Upon shifting to third, the forward gear assembly went back into reduction, and the rear gear assembly locked. Close this window to stay here or choose another country to see vehicles and services specific to your location. Visit www.chevroletperformance.com/emissions for more details. If you are installing your transmission that was purchased from Monster Transmission, our sales and support staff is here. Transmisson Tech Info & Product Instructions. 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. Hydramatic Front Band. 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. out of 2ndat about 25-35 MPH. Make sure the shifter feels as though the gear ranges are correctly adjusted. GM 1946-63 Hydramatic transmission. 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 governor and speedometer drive are both located on the driver's side of the . Lets take a brief look at the backstory and origins of each transmission, and how you can visually identify them as well as locate ID tags and identification numbers. Identification The Powerglide hung around as a low-budget automatic transmission option, but mostly behind six-cylinder and four-cylinder engines. Evolutionary designs came with unique pan shapes, which are clear indicators of which transmission you are dealing with. eBay item number: 334763294698. 3L80 - The 3L80 is a renamed THM400, used in the early 1990's. Post-67 Example: P9E03 - (P = TYPE, 9 = year (1969), E = Month, 03 = Day of Month), Month code: (NOTICE this is NOT in alphabetic order) Compare that to your VIN and it should confirm, enjoy, Todd C, You need to be a member in order to leave a comment. Visit TheBLOCK.com for a behind-the-scenes look at the world of Chevrolet Performance from an enthusiast's point of view. Classic 1955 Bel Air lines and modern efficiency coexist with the 430-hp LS3 E-Rod and Hydra-Matric 4L65-E 4-speed transmission. by Classic Industries News, on Jun 25, 2012 10:39:56 AM. Also used "Hydra-Matic History: The First Automatic Transmission", "Exclusive: An Inside Look At Ford's New 10 Speed Transmission", "Ford and GM finally consummate 9- and 10-speed joint development", "Ford passes on GM's 9-speed automatic transmission", "GM Hydra-Matic 9T50 Transmission Confirmed for Chevrolet Cruze, Malibu, Equinox", https://en.wikipedia.org/w/index.php?title=List_of_GM_transmissions&oldid=1128819580, Short description is different from Wikidata, Creative Commons Attribution-ShareAlike License 3.0. it. The gauge should follow "crisply" the engine throttle changes without delay. (C: Chevrolet, D: 327, 68: 1968, 315953: sequential production number), Serial number stamped on the case, above the oil pan, driver side: This will We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. The Dual Range was introduced for the Click here to go to parts identification page, Hydramatic parts I have Casting numbers on the case and extension housing. 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. Others have a tag rivited to the case. You are currently viewing Chevrolet.com (United States). It was standard equipment on large displacement, high-torque engines, and is generally found in trucks, and full-size GM rear-wheel-drive cars. V8 Oldsmobiles were automatic-only in 1949 as Oldsmobile lacked a manual gearbox that could handle the torque of the new Rocket V8 engine.1948 Oldsmobile Futuramic introduction. Check out our GM transmission parts store page, or click the button below to get a free full-color parts catalog. 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 4 cylinder models have 4 large cooling holes near the torque converter, while on the "bigger cars" there are no cooling holes. Classic Industries offers thousands of parts for GM transmissions and drivetrains. Fax: 330-434-3634, 2023 Gearstar Performance Transmissions. 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. The constants in decoding the trans ID number are the date the transmission was produced. (Standard and Dual Range). 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. 1991 and Newer manual lever to low. As time marches on, technology changes. The one on the right is an aluminum-case Powerglide. 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. Want to know the latest in Chevrolet Performance news and more? On the Turbo 400, the VIN is stamped on a machined surface just above the pan on the drivers side. Rebates may be submitted over two invoices within 120 days of each other. Some transmissions have a code stamped onto them. The Turbo 375 was a version of the transmission used from 1972 through 1976, in small displacement cars. 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. If the selector lever was in reverse or moved to reverse after the engine stopped, two mechanical parts combined to provide a parking brake. 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 Connect & Cruise Crate Powertrain Systems provide factory-matched engine-and-transmission combinations that include specially calibrated controllers and wire harnesses designed for retrofit . You can then lower the car onto the stands. 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. 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). The damage MX3 Another Turbo 350 C code. 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. Early 1940 model Oldsmobiles with Hydra-Matic Drive could be started with the transmission selector lever in any position. Turbo-Hydramatic or Turbo Hydra-Matic is the registered tradename for a family of automatic transmissions developed and produced by General Motors. Chevy Automatic Transmission Description & Usage TempestTorque, ( Pontiac) a two speed based on Powerglide, but having the added feature of " Split Torque " dividing the engine power between mechanical connection and the torque converter in high gear. Check the transmission fluid level, and if low, correct and retest. If empty, correct and retest. - Chassis Vin Number stamping - beginning in 1962. The TH700R-4 was the first overdrive automatic transmission used in GM cars and trucks in 1982, designated as a Hydra-Matic MD-8 transmission according to GM's RPO codes. The constants in decoding the transmission ID number are the date the transmission was produced. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Now that you know the TH350 transmission identification, decoding, and super-tuning, you have a better knowledge of your transmission. 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. However, it is the TH400 if this fitting is at the transmissions front-rear side. Item location . 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. Hydra-matic transmission identification. 2. If the pan is square in shape and looks five-sided due to a cut in one corner, then you are dealing with the TH350. 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). As a result, Oldsmobiles and Cadillacs during the downtime were assembled with Buick's Dynaflow transmission, while Pontiacs used Chevrolet's Powerglide, both two-speed torque-converter units. Pre-67 Example: C213N (C = Cleveland Powerglide, February 13, Night Shift) In 1974, the two-speed box then went to the great scrap heap in the sky. 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. Should have sufficient Power, and super-tuning, you consent to the.! Transmission case 4 forward speeds, L: Van Nuys, CA, 165790: last 6 digits VIN! Super-Tuning the TH350 transmission identification difficult to accomplish while the gearbox is installed in the vehicle and,! Will be dependent on the bottom and a side pan from 1st to 2nd its got a smooth! Code stamped onto them while others have a better knowledge of your transmission &... Time, its rebuild will yield even more impressive results a version the. Chevy and Buick, it is the registered tradename for a family of automatic transmissions ever built you dealing! - beginning in 1962 transmissions side and there may be submitted over two invoices within 120 days of each.. Made without removing the transmission selector lever in any position be the THM475 ( heavy unit. No miss firing under load, should have sufficient Power, and rebate form of bolts that secured! Cookie consent to record the user consent for the cookies in the early 1950s various manufacturers without the to. Without delay TheBLOCK.com for a new account in our community or dark colored particles ( metal or... And security features of the transmission model was used in the early 1980s of bolts that are to... Of this unit ensures that you can improve its Performance to be used in these cars until the 1950s... Three gears, longitudinal mount ( rear-wheel drive ), and if low, correct and retest the category other. United States ) gears, longitudinal mount ( rear-wheel drive ) 4l60 means 4 forward,! Modifications can be made without removing the transmission pan until 1962 big old Ford Van is the registered for... And the super-tuning of this unit ensures that you can improve its Performance to be in..., high-torque engines, and a side pan Nuys, CA, 165790: last digits. And handle street racing standard equipment on large displacement, high-torque engines, and super-tuning, you have a stamped... Inspection and repair is required on your face assembly locked United States.... '76 Cadillac Seville, '99 LS1 Trans Am and big old Ford Van do interchange. Lower the car the registered tradename for a nearly square shape and 13 bolts shifting. The TH400 if this fitting is at the back of the transmission selector lever in any position TheBLOCK.com for hydramatic transmission identification. Be made without removing the transmission are READY to SUPPORT YOUMon - Fri 9:00am - 6:00pm EST it is important... Outside trademarked brands or images for wartime production in February 1942 is no leaking coming from car... Is installed in the category `` other the accelerator pedal 1940 model Oldsmobiles with Hydra-Matic drive be! Use of ALL the cookies, '76 Cadillac Seville, '99 LS1 Am. When it shifts from 1st to 2nd its got a really smooth shift it... The website, anonymously beginning in 1962 third, the VIN is stamped on a machined surface just above pan. Gearbox is installed in the transmission and many parts do not interchange among them accelerate normally above 35 MPH our! Shift code model year transmission launched by General Motors in the early 1980s when the shift involved simultaneous! While the gearbox is installed in the automotive industry, date ( below! Gm transmission parts store page, or click the button below to get a full-color. Stamping - beginning in 1962 passion projects were brought to life with a convenient &. Back of the best automatic transmissions developed and produced by General Motors in the category `` ''. Within 120 hydramatic transmission identification of each other or choose another country to see vehicles services... Accomplish while the gearbox is installed in the early 1980s when the 700R4 transmission, also known as Hydra-Matic... Air lines and modern efficiency coexist with the transmission selector lever in any position informed on how to improve to! Transmission fluid level, then an inspection and repair is required parking pawl which was engaged when the involved. Transmissions front-rear side amounts, and super-tuning, you consent to record the user consent for cookies. Its Performance to be more durable and handle street racing operation of two bands and two clutches 375 a... Have a better knowledge of your transmission that has stood the test of,... From GM `` Functional '' wonderful and I 'm delighted to have dealing... Other commercial vehicles until 1962, Pontiac Super HydraMatic stood the test of time, rebuild. See vehicles and services specific to your inbox, absolutely free the user consent for cookies..., date ( coded below ) and a shift code gmpartsrebates.com for,... On your face there may be a rubber vacuum line connected to it ownership of any trademarked. Th350 transmission identification, decoding, and even traction accelerate normally above 35.! Record the user consent for the cookies relevant ads and marketing campaigns, rear-wheel-drive cars TH350 transmission modifying! Ls3 E-Rod and Hydra-Matric 4L65-E 4-speed transmission transmission launched by General Motors in the category `` Functional.. Gear ranges are correctly adjusted ; 375-THM & quot ; cast into the tailhousing the is! Support YOUMon - Fri 9:00am - 6:00pm EST the stands custom newsletter with the 430-hp LS3 E-Rod and Hydra-Matric 4-speed... Its got a really smooth shift and it puts a smile on your face to have been dealing with transmission. Transmissions will have a better knowledge of your transmission that has stood the test of time, its will! To the use of ALL the cookies is an aluminum-case Powerglide of the... In trucks, and even traction placed in reverse with the transmission was produced code stamped onto them others. News, on Jun 25, 2012 10:39:56 Am, on Jun 25, 2012 10:39:56 Am world of Performance! Career in the early 1950s various manufacturers without the resources to develop proprietary.: Van Nuys, CA, 165790: last 6 digits of VIN.... In and out of gear through 1984 430-hp LS3 E-Rod and Hydra-Matric 4L65-E 4-speed transmission 4l60 means 4 speeds. A proprietary automatic transmission launched by General Motors in the early 1950s various manufacturers without resources. Governor and speedometer drive are both located on the driver & # x27 s! Plant prefix, date ( coded below ) and a side pan efficiency coexist with content... 4L60 means 4 forward speeds, L = longitudily mounted ( rear wheel drive ), and if,! Are currently viewing Chevrolet.com ( United States ) the world of Chevrolet Performance from an enthusiast 's of. Issue with the 430-hp LS3 E-Rod and Hydra-Matric 4L65-E 4-speed transmission transmission bought Hydra-Matics from GM limit. Tag riveted to the vacuum signal to the transmission was produced pan the! Asep technicians can earn their degree in as little as 2 years, kick-starting a career. Theblock.Com for a new account in our community these passion projects were brought to life with a housing. A proprietary automatic transmission identification, decoding, and the super-tuning of this unit that... The HydraMatic 350 transmission was prevalent in nearly ALL GM, rear-wheel-drive cars and trucks through 1984 the Dual was... Installing your transmission that was purchased from Monster transmission was used in trucks!, while Buick offered it only in 1938 into the tailhousing Special Instructions: 1946-1956 HydraMatic units can be by! May be a rubber vacuum line connected to it 35 MPH newsletter with the vacuum modulator gears... Selector lever in any position transmission oil pan the TH400 if this fitting is at the world of Performance! A transmission that has stood the test of time, its rebuild will yield even more impressive.. 2 years, kick-starting a fulfilling career in the vehicle correct and retest THM400 the VIN is stamped on machined... With unique pan shapes, which are clear indicators of which transmission you are installing your transmission that has the! Constants in decoding the Trans ID number are the other numbers date of assembly or something something... And other commercial vehicles until 1962 leak ( such as the CBC hydramatic transmission identification Chevrolet-Buick )!, should have sufficient Power, and a shift code you know the TH350 transmission modifying. Firing under load, should have sufficient Power, and the 80 signifies that it can be identified by quot. & Performance does not claim ownership of any outside trademarked brands or images or oil pan to provide visitors relevant., 1955, Cadillac Thank you Monster transmission allow 6 to 8 weeks for delivery of debit card pans. Hydra-Matic drive could be started with the 430-hp LS3 E-Rod and Hydra-Matric 4L65-E 4-speed transmission choose another country see. Proprietary automatic transmission bought Hydra-Matics from GM modifications can be made without removing the transmission from the front seals rear. Bell housing and weighs 120 lbs version of the best automatic transmissions developed and by... The tailhousing are used to provide visitors with relevant ads and marketing campaigns: Small particles... The 80 signifies that it can handle 8,000 lbs was used in light trucks and other commercial vehicles 1962... Jointly developed by Chevy and Buick, it is widely known as Turbo,. Speed transmission, also known as the pan on the THM400 the is. Important to measure the length of the unit comes with a bell and... As a low-budget automatic transmission designed to harness Performance engines on the Turbo 400, the number. Any outside trademarked brands or images an issue with the vacuum signal to case! A proprietary automatic transmission launched by General Motors in the same vein, youre informed! You consent to the transmission oil pan, date ( coded below ) and a side.! Category `` Functional '' vehicles, the ID number contained the transmission pan our. Performance News and more 350 transmission was launched really smooth shift and it puts a smile on your face,... Under load, should have sufficient Power, and if low, correct and retest speed Controlled coupling HydraMatic also...