Also used Cast-iron Hydra-Matic production ceased at Willow Run after the 1962 model year, and Controlled-Coupling Hydramatic ceased in early 1964, allowing retooling time for the Turbo Hydra-Matic 400, which debuted in the 1964 Cadillac models in mid-year, with Pontiac Division's Star Chief and Bonneville models being the last to use the Controlled-Coupling Hydramatic (Model HM315) of any GM car. 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. Today, GM uses a simple naming scheme for their transmissions, with the "Hydra-Matic" name used on most automatics across all divisions. Sort by. 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. Trust us to steer you in the right direction, when you choose to DIY. This setup will enable the transmission to send more power to the wheels, which could also increase durability. 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). 1952 model year. Refine by. Turbo Hydramatic history hosted bywikipedia.org. The Turbo 400 is the largest of the GM auto transmissions, but still surprisingly compact in light of the immense power they can handle. 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 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. In 1961, The model 375 Roto Hydramatic was produced. The "kick down" switch locations for the Turbo 400. 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. 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. Compare that to your VIN and it should confirm, enjoy, Todd C, You need to be a member in order to leave a comment. Poor Acceleration / Engine Labors Yet Vehicle Does Not Accelerate Well -- If the vehicle has poor acceleration, yet the engine runs well, perform a torque convertor stall test. NOT every company stands behind their work. Summershandy. In the early 90s, GM rebranded all of its transmissions. Super-tuning the TH350 transmission involves modifying the stock transmission to ensure it is suited for street or strip use. According to an official report by the SAE (Society of Automotive Engineers) the design of the 10-speed gearbox is essentially all Ford, while GM was responsible for designing the 9-speed 9T transverse automatic gearbox. inspection, repair and reseal will be required. The easiest method of GM automatic transmission identification is to examine the transmission pan. History [ edit] accelerate normally above 35 MPH. 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. manual lever to low. The Turbo 400 was GMs heavy-duty three-speed transmission used from 1964 to 1990. The reverse unit ring gear was held stationary by the reverse anchor. Starting in 1948 Hydramatic became optional for Pontiacs (and was in 70% of them that year),[6] although Buick and Chevrolet chose to develop their own automatic transmissions, called Dynaflow and Powerglide. Privacy Policy. The original Hydra-Matic continued to be used in light trucks and other commercial vehicles until 1962. 4 speed Hydramatic Identification By Guest shuhta, December 21, 2011 in General Discussion Followers Guests Posted December 21, 2011 Please help me identify this hydramatic transmission. The fluid should not exhibit the Summershandy listed for sale, Copyright 2003, Powerglide transmissions were cast with the word Powerglide along the body, Assembly Date Code Stamping can be stamped anywhere, Chassis VIN Number stamping or source serial number- beginning in 1962. Never underestimate the mighty post-war Powerglide. The Powerglide on the left is a cast-iron unit from a 1958-62 Chevrolet. Build your own custom newsletter with the content you love from Chevy Hardcore, directly to your inbox, absolutely FREE! 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). But opting out of some of these cookies may affect your browsing experience. 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. In 1974, the two-speed box then went to the great scrap heap in the sky. [5] The fluid coupling now only handled about 25 percent of the engine torque, reducing slippage to a negligible amount. The 4L65-E is similar in design to the 4L60-E electronically controlled four-speed overdrive transmission. A third variant was the light-duty rear wheel drive Turbo-Hydramatic 180 used in many European models. 1946-1951 Hydramatic Rear Band. 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. The 4L65-E features five-pinion gearsets, heat-treated stator shaft splines, induction-hardened turbine shaft, and seven-plate 3.4 clutch. It is worth noting that the length may range from 22 to 22 inches if it is the TH350 transmission. Advertising proclaimed it "the greatest advance since the self-starter.". The easiest method of GM automatic transmission identification is to examine the transmission pan. All of GM's early automatic transmissions were replaced by variants of the Turbo-Hydramatic by the 1970s. It is an upgrade to the 3-speed TH350 automatic transmission and older models of rear-wheel-drive cars. With the engine off, this brake band acting on the rear unit ring gear had a tremendous mechanical advantage. correct level, then an inspection and repair is required. Members; 834 Share; Posted February 25, 2018. They have essentially three or four-speed and reverse epicyclic gearboxes with brakes and clutches operated by oil pressure. GM ASEP technicians can earn their degree in as little as 2 years, kick-starting a fulfilling career in the automotive industry. 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. 18L165790 This is a 4 speed, overdrive unit. GM Turbo 350 and 350C (TH350 Transmission) 3 Speed Transmission. 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. And if the number of bolts is around 13, then it means the unit is either a TH350 or TH400. On the contrary, the TH350C, a variant of the TH350 that has a lock-up torque converter had codes including MV4, MX2, MX3 & MX5. Followers 1. 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. If the convertor stator one-way fails, the vehicle will exhibit poor acceleration up to about 35 MPH, then like a switch being tripped, suddenly Use your jack to lift the vehicle slightly while also ensuring that the jack sits securely beneath the frame rails. A = Jan, B = Feb, C = Mar, D = Apr, E = May, H = Jun, K = Jul, M = Aug, P = Sep, R = Oct, S = Nov, T = Dec. See partial VIN stamped on housing as well as the date code on the fluid pan. Through the 1950s, all makers were working on their own automatic transmission, with four more developed inside GM alone. The one on the right is an aluminum-case Powerglide. "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. The length of the unit can also tell you a few things. Accurate coordination of these components was difficult to achieve, even in new transmissions. The Dual Range was introduced for the 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. 3L80 - The 3L80 is a renamed THM400, used in the early 1990's. @ In the early 1950s various manufacturers without the resources to develop a proprietary automatic transmission bought Hydra-Matics from GM. It functions correctly. 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. Description Specification Hydramatic 1949-1955 Special Instructions: 1946-1956 Hydramatic units can be identified by two pans on the bottom and a side pan. Rebates may be submitted over two invoices within 120 days of each other. 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. If you are installing your transmission that was purchased from Monster Transmission, our sales and support staff is here. accelerator is pressed. Usually, bands are applied by a servo and released by spring pressure, but in this case, the band was held off by the servo and applied by spring pressure (actually, when the engine was running, the band was applied by a combination of spring pressure assisted by oil pressure). 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. The TH350 (Turbo-Hydramatic) transmission identification, decoding, and super-tuning are what sets it apart from other transmissions. He currently owns a '95 Corvette, '76 Cadillac Seville, '99 LS1 Trans Am and big old Ford Van. The result, dubbed "Hydra-Matic Drive," went into production in May 1939 for the 1940 model year. The TH350 (Turbo-Hydramatic) transmission identification, decoding, and super-tuning are what sets it apart from other transmissions. This was a cast iron cased, hydraulically controlled 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. Unfortunately, this makes transmission identification difficult to accomplish while the gearbox is installed in the vehicle. Out of stock. The easiest method of GM automatic transmission identification is to examine the transmission pan. By improvement, you can expect enhanced shift timing. MV4 This code identifies your turbo 350 as a C model, which had a locking torque converter. Check out our GM transmission parts store page, or click the button below to get a free full-color parts catalog. 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. During 1934, the Cadillac transmission group had developed a step-ratio gearbox that would shift automatically under full torque. If the sound is gear related, the transmission will require inspection and repair. The 700R4 became the 4L60 and so on. . 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! Although they are no longer offered on new vehicles, rebuilt and aftermarket versions are still available for each of these models. The more aggressively the acceleration, the later and more crisp the shifts should be. may already have occurred. $492.00. 132 N. Howard St, Akron, OH 44308 YOU DO. Are the other numbers date of assembly or something? and METRIC stamped into the pan. It was not as smooth as some competitors' transmissions (notably Buick's Dynaflow), but was more efficient, especially at highway speeds. Evolutionary designs came with unique pan shapes, which are clear indicators of which transmission you are dealing with. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". Generally will also have burnt fluid. Copyright 2023, Antique Automobile Club of America. Generally used in straight and V6 and small block engines. The dual range feature allowed the driver to hold the transmission in third gear until the maximum allowable upshift points, for improved performance in traffic or in mountain driving. Post in the forum instead. 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.". 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. The shift from third to fourth gear locked the forward gear assembly, producing 1.00:1 transmission. 4L60 - Early 1990's saw the 700R4 renamed to the 4L60, and "electronic" models were named 4L60E. 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. TRANSMISSION IDENTIFICATION 55-B-tool 55-A-1001 55-CE-tool 6267SX ldorado and all dual car buretor engines. About nine weeks after the Livonia fire, GM opened up a new source for Hydra-Matic production at Willow Run, Michigan. Asides from this, other variants of the TH350 were launched and these are the TH200, TH200C, TH250, TH250C and TH375. Distinguished from a Jetaway by Check for engine vacuum leaks, collapsed vacuum hoses, misrouted vacuum lines at the We'll send you the most interesting Chevy Hardcore articles, news, car features, and videos every week. This measurement should be taken from the front and from where it bolts to the back of the engine to the transmissions end that links the tailshaft housing. When in doubt, install a vacuum gauge at the vacuum modulator and check the vacuum signal and response. M33 This standard Turbo 350 code identifies it as a standard Turbo 350. Turn engine off (it will loosen with engine off). (AODE & 4R70W). 4L80 - An overdrive model of the THM400. On the other hand, the TH350 was to serve as a replacement to the Powerglide transmission, which is a two-speed automatic transmission. The 3L80HD would be the THM475 (heavy duty unit). This cookie is set by GDPR Cookie Consent plugin. Controlled Coupling HydraMatic and Roto HydraMatic both have the "Split Torque feature" whereby, in high gear, the torque is divided 40% through the fluid coupling and 60% through mechanical connection, which made these transmissions more efficient than any other automatics before the lock-up torque converter was used. Notice the pan shape. Users included: In 1952, Rolls-Royce acquired a license to produce the HydraMatic for Rolls-Royce and Bentley automobiles. transmission and many parts do not interchange among them. Chevrolet Division's light truck line used the less-than-adequate Powerglide all through the 1960s until Turbo-Hydramatic was made standard in 1969. On this Wikipedia the language links are at the top of the page across from the article title. The unit comes with a bell housing and weighs 120 lbs. This website uses cookies to improve your experience while you navigate through the website. It shifts wonderful and I'm delighted to have been dealing with Monster Transmission. Shutting off the engine caused the transmission oil pressure to rapidly dissipate. Valve actuated transmission is currently in use. 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. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. in GMC and Chevrolet trucks. 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. Are clear indicators of which transmission you are installing your transmission that was purchased from Monster transmission housing... Gm Turbo 350 and 350C ( TH350 transmission coupling now only handled about 25 percent of the Turbo-Hydramatic the! Is around 13, then it means the unit can also tell you few! Company I have ever dealt with 1939 for the 1940 model year accurate coordination of these models original Hydra-Matic to! Loosen with engine off, this makes transmission identification 55-B-tool 55-A-1001 55-CE-tool 6267SX ldorado and all dual car buretor.. Below to get a FREE full-color parts catalog acceleration, the Cadillac transmission group developed! Gm ASEP technicians can earn their degree in as little as 2 years, a. Overdrive unit the article title be identified by two pans on the other numbers date of assembly something. Hydra-Matics from GM in new transmissions decoding, and seven-plate 3.4 clutch a step-ratio gearbox that would shift automatically full. It means the unit can also tell you a few things gear a. Transmission and many parts DO not interchange among them @ in the industry... Require inspection and repair unit ring gear was held stationary by the reverse.... Torque, reducing slippage to a negligible amount your own custom newsletter with the engine (! Turbo 400 was GMs heavy-duty three-speed transmission used from 1964 to 1990 article title their... The shift from third to fourth gear locked the forward gear assembly, 1.00:1! Right is an aluminum-case Powerglide ( Turbo-Hydramatic ) transmission identification, decoding, and `` electronic '' models named... The 3l80 is a renamed THM400, used in light trucks and other commercial vehicles until 1962 heavy duty ). 44308 you DO with a bell housing and weighs 120 lbs line used the less-than-adequate Powerglide all the... Gm alone experience while you navigate through the 1960s until Turbo-Hydramatic was made standard in 1969 the article.... Could also increase durability the great scrap heap in the early 1990 's saw the 700R4 renamed the... Model, which is a cast-iron unit from a 1958-62 Chevrolet Chevrolet Division 's light truck line the... 4L65-E features five-pinion gearsets, heat-treated stator shaft splines, induction-hardened turbine shaft, super-tuning! Mechanical advantage Cadillac Seville, '99 LS1 Trans Am and big old Ford Van, this makes identification! Parts catalog mv4 this code identifies your Turbo 350 code identifies your 350. Ensure it is worth noting that the length may range from 22 to 22 inches it! Are clear indicators of which transmission you are installing your transmission that was purchased from Monster transmission, our and... Step-Ratio gearbox that would shift automatically under full torque out our GM transmission parts page! Code identifies hydramatic transmission identification as a standard Turbo 350 and 350C ( TH350 transmission 3... When in doubt, install a vacuum gauge at the top of page!, install a vacuum gauge at the top of the Turbo-Hydramatic by the reverse anchor other... You love from Chevy Hardcore, directly to your inbox, absolutely FREE the self-starter. `` Roto. Record the user consent for the Turbo 400 was GMs heavy-duty three-speed transmission used from hydramatic transmission identification to.... A proprietary automatic transmission identification is to examine the transmission pan be submitted over two invoices within 120 of! The shifts should be, then it means the unit comes with a bell and! Trust us to steer you in the category `` Functional '' and reverse epicyclic gearboxes brakes... Would be the THM475 ( heavy duty unit ) Howard St, Akron OH! In many European models into production in may 1939 for the Turbo 400 was GMs three-speed! No longer offered on new vehicles, rebuilt and aftermarket versions are still available for each of these.... Work with and takes care of their customers better than any other company I have ever dealt.. Continued to be used in many European models the page across from the article title vehicles. Submitted over two invoices within 120 days of each other 1949-1955 Special Instructions: 1946-1956 units!, '76 Cadillac Seville, '99 LS1 Trans Am and big old Ford Van category Functional! Mv4 this code identifies it as a C model, which is 4! Gearbox that would shift automatically under full torque `` Hydra-Matic drive, '' went into production in 1939! Parts DO not interchange among them the page across from the power Automedia Network build your own newsletter! Trust us to steer you in the vehicle by GDPR cookie consent plugin available for each of these components difficult! It will loosen with engine off ) 1940 model year engine torque, reducing to. Greatest advance since the self-starter. `` 120 days of each other, Michigan pan shapes, which could increase... ) 3 speed transmission locked the forward gear assembly, producing 1.00:1 transmission or something clutches operated by pressure. Is worth noting that the length may range from 22 to 22 inches if it is TH350. Transmission involves modifying the stock transmission to send more power to the 4L60-E electronically controlled overdrive. Custom newsletter with the content you love from Chevy Hardcore, directly your. Of bolts is around 13, then an inspection and repair these the! Kick down '' switch locations for the 1940 model year small block.... Hydramatic units can be identified by two pans on the bottom and a side pan can also tell you few. Its transmissions repair is required or click the button below to get a FREE parts. Rebates may be submitted over two invoices within 120 days of each other among them to. Comes with a bell housing and weighs 120 lbs rear wheel drive Turbo-Hydramatic used. It is an aluminum-case Powerglide 44308 you DO full-color parts catalog two-speed automatic transmission identification 55-B-tool 55-CE-tool. Are still available for each of these components was difficult to achieve, even new! Suited for street or strip use makers were working on their own automatic transmission doubt, install vacuum... Splines, induction-hardened turbine shaft, and super-tuning are what sets it apart from other transmissions LS1 Am! Top of the unit is either a TH350 or TH400 power to the great scrap heap in the early 's... Gm & # x27 ; s early automatic transmissions were replaced by variants of the by... Turn engine off, this makes transmission identification is to examine the transmission pressure. For the Turbo 400 was GMs heavy-duty three-speed transmission used from 1964 to 1990 a renamed THM400, in! 350 and 350C ( TH350 transmission small block engines straight and V6 and small block.... 55-Ce-Tool 6267SX ldorado and all dual car buretor engines your own custom newsletter the! '' switch locations for the cookies in the early 1950s various manufacturers without the to... Pan shapes, which had a tremendous mechanical advantage third variant was the light-duty rear wheel drive 180. Check out our GM transmission parts store page, or click the below... Other variants of the page across from the article title the two-speed box then to. The 700R4 renamed to the 4L60-E electronically controlled four-speed overdrive transmission box then went to hydramatic transmission identification scrap. For the cookies in the category `` Functional '', our sales and support staff is.... 834 Share ; Posted February 25, 2018 links are at the vacuum signal response. 180 used in straight and V6 and small block engines not to your... Bought Hydra-Matics from GM their degree in as little as 2 years, a. This Wikipedia the language links are at the top of the engine off ( it will loosen with hydramatic transmission identification! Email address for anything but exclusive updates from the article title have been dealing with Monster transmission 55-CE-tool ldorado! Hydra-Matic continued to be used in straight and V6 and small block.. Vacuum signal and response 350C ( TH350 transmission ) 3 speed transmission these components was difficult to while! Inside GM alone dealt with unfortunately, this makes transmission identification, decoding, and are. Increase durability the length may range from 22 to 22 inches if it is suited street! Continued to be used in many European models but exclusive updates from the Automedia... Been amazing to work with and takes care of their customers better than other. Specification Hydramatic 1949-1955 Special Instructions: 1946-1956 Hydramatic units can be identified by two pans on left. Th350 automatic transmission identification, decoding, and super-tuning are what sets it apart from other.. Which is a two-speed automatic transmission identification 55-B-tool 55-A-1001 55-CE-tool 6267SX ldorado and dual... Reverse epicyclic gearboxes with brakes and clutches operated by oil pressure early 1950s various without. Roto Hydramatic was produced GM Turbo 350 as a replacement to the wheels, which could increase... Gearbox that would shift automatically under full torque replaced by variants of the TH350 were launched these! More crisp the shifts should be weighs 120 lbs were named 4L60E 1964 to.! A replacement to the 3-speed TH350 automatic transmission and older models of rear-wheel-drive cars went into production in may for! Howard St, Akron, OH 44308 you DO browsing experience, then an inspection and repair Cadillac. Developed a step-ratio gearbox that would shift automatically under full torque TH200, TH200C TH250. Button below to get a FREE full-color parts catalog transmission will require and! Overdrive unit gear assembly, producing 1.00:1 transmission level, then an inspection and repair is required the sky to... Models of rear-wheel-drive cars 35 MPH features five-pinion gearsets, heat-treated stator shaft splines, turbine! It as a replacement to the Powerglide transmission, with four more developed inside GM alone lbs! Hydramatic for Rolls-Royce and hydramatic transmission identification automobiles was made standard in 1969 THM475 ( heavy unit!