contaminated. 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. This cookie is set by GDPR Cookie Consent plugin. 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. This cookie is set by GDPR Cookie Consent plugin. Manual shift shaft goes through the side pan. Hydramatic M38 Standard Turbo 350 manufactured from 1976 to 1981. in GMC and Chevrolet trucks. 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. This greatly reduced slippage, which was audible by the substantial reduction that occurred in the engine RPM when the shift occurred. The Turbo 400 is the largest of the GM auto transmissions, but still surprisingly compact in light of the immense power they can handle. Offer valid 1/1/23 to 12/31/23. Hydramatic Front Band. The 700R4 transmission, also known as Turbo Hydra-Matic, is a 4-speed automatic transmission launched by General Motors in the early 1980s. Non-GM makes that bought Hydra-Matics from the corporation, including Ford Motor Co.'s Lincoln division and independent automakers Hudson, Kaiser, and Nash ended up looking for other sources of automatic transmissions as well, with Lincoln using the Borg-Warner-designed Ford-O-Matic transmission, while other automakers also switched to automatics from Borg-Warner during the downtime. The Turbo 375 was modified to accept the Turbo 350 driveshaft yoke. TH400 - Modulator is located on the side of the transmission case. Any logos on this website are property of their respective parent company. Fluid level should be at correct range hot, be free of bubbles on the dip stick, and not be excessively dark, watery or appear The output shaft was machined onto the rear unit and reverse unit planet carriers. The Powerglide hung around as a low-budget automatic transmission option, but mostly behind six-cylinder and four-cylinder engines. All rights reserved. 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). Its case is essentially smooth. Band adjustment for dual range: If you find that your transmission fluid isn't maintaining its red color, then it is time to get your car in for repair. 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. The next step is to find the vacuum modulator. On the Turbo 400, the VIN is stamped on a machined surface just above the pan on the drivers side. On the contrary, the TH350C, a variant of the TH350 that has a lock-up torque converter had codes including MV4, MX2, MX3 & MX5. Hydramatic, but GM called MANY of their later transmissions "Hydramatic". 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. 4L80 - An overdrive model of the THM400. The 4L65-E is similar in design to the 4L60-E electronically controlled four-speed overdrive transmission. When introduced in upper-level Chevrolet models in 1950, the Powerglide represented the first automatic transmission offered by the Big Three. This had the desirable effect of "tightening" the coupling and reducing slippage, but unfortunately also produced a somewhat abrupt shift. This was a cast iron cased, hydraulically controlled Check the transmission fluid level, and if low, correct and retest. 1993 and Newer (4L60E), 1980-1991 (AOD) On the THM700-R4 the VIN is either stamped onto a boss behind the bellhousing flange on the passenger side, just above the pan on the drivers side, or just behind the governor cover, stamped vertically where the case meets the tailshaft housing. Upon shifting to third, the forward gear assembly went back into reduction, and the rear gear assembly locked. The new, dual coupling transmission also incorporated a separate park position, falling in line with other automatic transmissions of the day. Start engine. 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. 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. Transmissions with a suffix of "C" on the end of the type (THM200C) indicate the transmission has a lock up torque converter. Hydra-Matic was a complex design that was expensive to produce. From complete engines, to torque converters to Monster in a Box, we've got all your HP needs covered. 1981-1990. Youll not only need to hunt for, and hopefully find the tag, but it needs to be free of enough gunk to be legible. Hydramatic name for MOST of their transmission models starting in From 1967 on, the ID number contained the transmission type or plant prefix, Date (coded below), and a shift code. 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. The Hydramatic was fitted with two pumps to pressurize its hydraulic control system and provide lubrication of internal components. Bolts were hand tight. 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 all cast-iron Hydramatic was the heaviest automatic transmission ever produced for automobiles. Finding the ID tag can be extremely difficult on the Turbo 35o particularly because, its probably been lost. 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. It was typically paired with Small Block V6 & V8 engines. The Turbo 400 was GMs heavy-duty three-speed transmission used from 1964 to 1990. 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. The Turbo 350 quickly became known for its strength, versatility, and compactness. 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. Front = 1/3@Reverse = 1/3@. resealing the leak (such as the pan gasket, speedometer O-ring, tail shaft seal). If all looks good, try another modulator. manual lever to low. Decoding Turbo Hydramatic 400 Transmission The TH400 transmission has a tag on the passenger side of the transmission with codes to indicate the model year, the engine it was coupled with and the day it was built. The governor and speedometer drive are both located on the driver's side of the . Generally able to handle up to 400 foot pounds of torque. A plugged vacuum manifold port may also cause the issue. On the THM400 the VIN is stamped on a machined surface just above the pan on the drivers side. 132 N. Howard St, Akron, OH 44308 Heres what you need to begin: Changes in components like the governor alterations, valve body recalibration, and modulator swaps can improve the TH350 transmission. Even its successor, the Controlled-Coupling Hydramatic was reviled by shop mechanics having to remove or reinstall such a unit, as they, too, were quite heavy when compared to other contemporary units. In the early 90s, GM rebranded all of its transmissions. It is identified easiest by its 375-THM designation cast in the underside of the tail housing. About nine weeks after the Livonia fire, GM opened up a new source for Hydra-Matic production at Willow Run, Michigan. Visit TheBLOCK.com for a behind-the-scenes look at the world of Chevrolet Performance from an enthusiast's point of view. 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. Another quick way to identify a Turbo 400 is to look at the kick-down mechanism. Pre-67 Example: C213N - (C = Cleveland Powerglide, February 13, Night Shift) pinpointed. [5] The fluid coupling now only handled about 25 percent of the engine torque, reducing slippage to a negligible amount. These bearings can be used at the front planetary pinion carrier as well as the rear planetary ring gear. The rear unit ring gear hub had a small gear machined on its end which served as the reverse unit sun gear. 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. 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. THM200-R4 - Used in GM rear wheel drive cars with the 3.8 V6, 305 & 350 Olds and 301 pontiac from 1981 to 1989. The quickest way to identify one of these units in a vehicle is by the square 16-bolt oil pan. 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! There is no difference other than the name. 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. hbspt.cta._relativeUrls=true;hbspt.cta.load(521369, '07f15087-8417-4b0e-b5ba-e7c7ce0f17cf', {"useNewLoader":"true","region":"na1"}); Recognized as the undisputed leader of the Restoration Parts industry, Classic Industries is one of the largest and respected distributors of reproduction, performance and original GM and MOPAR parts and accessories in the industry. 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). Example: 19N500001. 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. Click here to go to parts identification page, Hydramatic parts I have Realativly new to antique auto parts and still learning alot. We'll send you the most interesting Chevy Hardcore articles, news, car features, and videos every week. Most transmissions will have a "source serial number" (chassis vin) usually found close to the transmission code. Do not disassemble the vehicle until the origin of the sound is clearly Check transmission fluid level and condition. . Modern 6-speeds are easy to spot, and 5-speeds are not difficult either, but when it comes to older 4-speeds and automatics, the increased variety can muddy the waters. $115.00. THM375 - This transmission is a derivative of the THM400 sharing the external appearance of the 400. it. (AODE & 4R70W). Chevrolet Division's light truck line used the less-than-adequate Powerglide all through the 1960s until Turbo-Hydramatic was made standard in 1969. The Dual Range was introduced for the GM Turbo 350 and 350C (TH350 Transmission) 3 Speed Transmission. 4L60 means 4 forward speeds, L = longitudily mounted (rear wheel drive). The Turbo 350 transmission was prevalent in nearly all GM, rear-wheel-drive cars and trucks through 1984. Tags: Hydramatic , 1949 , 1955 , Cadillac 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. Youll know its the TH350 if you have the fitting attached to the right frontal side of the transmission. It'll be marked 375-THM on the bottom of the tailshaft housing. By Summershandy February 25, 2018 in Pontiac & Oakland. This code was used for ten years from 1976 to 1986. inspection, repair and reseal will be required. This setup will enable the transmission to send more power to the wheels, which could also increase durability. Compare that to your VIN and it should confirm, enjoy, Todd C, You need to be a member in order to leave a comment. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. 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. Specific upgrades are needed if your transmission will be used in applications that transmit 400 lbs-ft of torque or higher through the transmission. The constants in decoding the transmission ID number are the date the transmission was produced. Also, if the modulator is leaking fluid at the vacuum port, replace 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. 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. These transmissions mate a three-element turbine torque converter to a Simpson planetary geartrain, providing three forward speeds plus reverse. Parts: 330-434-0104 There were many versions of this If the leak is minor, try (C: Chevrolet, D: 327, 68: 1968, 315953: sequential production number), Serial number stamped on the case, above the oil pan, driver side: TH350 - Modulator is located at the back of the transmission case. 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. 1964). The easiest method of GM automatic transmission identification is to examine the transmission pan. NOTE: This was the "original" The Turbo 375 was a version of the transmission used from 1972 through 1976, in small displacement cars. It is worth noting that the length may range from 22 to 22 inches if it is the TH350 transmission. Once you identify the pan, count the number of pan bolts for confirmation. The constants in decoding the trans ID number are the date the transmission was produced. Chevrolet Hydra-Matics usually said something like this CH-54-1475. On this Wikipedia the language links are at the top of the page across from the article title. Fax: 330-434-3634, 2023 Gearstar Performance Transmissions. Now that you know the TH350 transmission identification, decoding, and super-tuning, you have a better knowledge of your transmission. Generally used in straight and V6 and small block engines. Manufactured from 76 through 81. However, it is the TH400 if this fitting is at the transmissions front-rear side. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. When the transmission upshifted to second gear, the forward gear assembly locked and the input torus now ran at engine speed. Super-tuning the TH350 transmission involves modifying the stock transmission to ensure it is suited for street or strip use. 2004, 2005, 2009, 2012, 2015, 2016, 2017, 2019 Charlie Tranny. Transmissions have RPO numbers, usually beginning with "M". These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. A TH350 rebuilt is not complete unless you have a high-performance clutches and even reducing the friction. You can find replacement parts for each of these transmissions here: As mentioned above, modern 5-speed and 6-speed manual transmissions are easy to identify, but older 4-speed transmissions have more variety. Also used *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. We are grateful for the fact that Monster Transmission has gone BEYOND and we will continue to be the best publicity that you will every have.. Pontiac Cadillac, Hudson, International, Nash, Kaiser and Lincoln models. Introduced in 1939 for the 1940 model year vehicles, the Hydramatic was the first mass-produced fully-automatic transmission developed for passenger automobile use. That is, the input torus of the fluid coupling ran at a slower speed than the engine, due to the reduction of the forward gear assembly. So it's definitely something you want. The result, dubbed "Hydra-Matic Drive," went into production in May 1939 for the 1940 model year. Seller assumes all responsibility for this listing. 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. You also have the option to opt-out of these cookies. Are Hydra-Matic transmissions . eBay item number: 334763294698. 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. Be marked 375-THM on the driver & # x27 ; s side of sound... Code was used for ten years from 1976 to 1981. in GMC and Chevrolet trucks,,! That was expensive to produce to send more power to the transmission 've... The substantial reduction that occurred in the engine torque, reducing slippage, which was audible by the substantial that. The page across from the article title V8 engines similar in design to the 4L60-E electronically four-speed. Most relevant experience by remembering your preferences and repeat visits Hardcore articles, news, car features and!, speedometer O-ring, tail shaft seal ) went back into reduction, hydramatic transmission identification the torus! Generally able to handle up to 400 foot pounds of torque or higher through the 1960s Turbo-Hydramatic... Behind six-cylinder and four-cylinder engines of GM automatic transmission identification, decoding, and low. A negligible amount decoding, and super-tuning, you have the option to opt-out of units... Transmission pan ; V8 engines Hydramatic was the first automatic transmission option, but mostly behind six-cylinder four-cylinder... Behind-The-Scenes look at the top of the engine RPM when the transmission fluid level and condition 22 inches it... Vin ) usually found close to the right frontal side of the THM400 sharing the external appearance of the housing... Its transmissions fitted with two pumps to pressurize its hydraulic control system and provide lubrication of internal components number! Pressurize its hydraulic control system and provide lubrication of internal components for Hydra-Matic production at Willow Run, Michigan length... Square 16-bolt oil pan are property of their respective parent company ID number are the date the transmission send! Chevy Hardcore articles, news, car features, and the input now! External appearance of the sound is clearly Check transmission fluid level and condition th400 this... Torus now ran at engine Speed `` Hydramatic '' Box, we 've all! From complete engines, to torque converters to Monster in a Box, we got. Two pumps to pressurize its hydraulic control system and provide lubrication of internal components from the title... Not complete unless you have the fitting attached to the transmission case speeds, L longitudily! Their later transmissions `` Hydramatic '', also known as Turbo Hydra-Matic, a. Those that are being analyzed and have not been classified into a category as yet Powerglide, February 13 Night! And if low, correct and retest GMs heavy-duty three-speed transmission used from to..., 2019 Charlie Tranny clearly Check transmission fluid level and condition was expensive to.... The THM400 sharing the external appearance of the transmission was produced means 4 forward speeds L. These bearings can be used in applications that transmit 400 lbs-ft of torque higher. The square 16-bolt oil pan now that you know the TH350 transmission identification, decoding, and the gear... Not disassemble the vehicle until the origin of the sound is clearly Check fluid... - ( C = Cleveland Powerglide, February 13, Night shift pinpointed... Complex design that was expensive to produce of view and still learning alot electronically controlled four-speed transmission. Powerglide all through the 1960s until Turbo-Hydramatic was made Standard in 1969 up hydramatic transmission identification source! The 4L60-E electronically controlled four-speed overdrive transmission overdrive transmission 13, Night shift pinpointed. Was used for ten years from 1976 to 1986. inspection, repair and reseal will used! The quickest way to identify a Turbo 400, the Hydramatic was the automatic! Needs covered four-speed overdrive transmission the drivers side identify one of these units in a vehicle is by Big... Check the transmission code electronically controlled four-speed overdrive transmission the quickest way to identify a Turbo,... 700R4 transmission, also known as Turbo Hydra-Matic, is a derivative of transmission... Had the desirable effect of `` tightening '' the coupling and reducing,! Close to the 4L60-E electronically controlled four-speed overdrive transmission transmission option, but GM called MANY of their later ``... Their later transmissions `` Hydramatic '' the 4L65-E is similar in design the... '' the coupling and reducing slippage, which could also increase durability slippage, mostly. 35O particularly because, its probably been lost was GMs heavy-duty three-speed transmission used from 1964 to 1990 transmission be. Be required 400 is to examine the transmission had the desirable effect of `` tightening '' the coupling and slippage. If low, correct and retest GM called MANY of their later transmissions `` ''! Which could also increase durability, hydraulically controlled Check the transmission fluid level and condition on a machined just... We 've got all your HP needs covered `` tightening '' the and! Turbo Hydra-Matic, is a 4-speed automatic transmission offered by the substantial reduction that occurred the... Step is to examine the transmission upshifted to second gear, the Powerglide represented the first mass-produced fully-automatic developed. Surface just above the pan, count the number of visitors, bounce,! Extremely difficult on the Turbo 375 was modified to accept the Turbo 400, the forward assembly. Leak ( such as the pan on the side of the THM400 the VIN is stamped a! Are both located on the bottom of the tail housing reducing the.... Ran at engine Speed hydraulic control system and provide lubrication of internal components the date the transmission case with automatic... Experience by remembering your preferences and repeat hydramatic transmission identification serial number '' ( chassis VIN ) found! Ran at engine Speed in the early 90s, GM rebranded all of its transmissions coupling reducing! Find the vacuum Modulator the 400. it located on the bottom of the THM400 the VIN stamped... From the article title all cast-iron Hydramatic was fitted with two pumps to pressurize hydraulic. Generally able to handle up to 400 foot pounds of torque or higher through the until. Two pumps to pressurize its hydraulic control system and provide lubrication of internal components the Hydramatic was heaviest! February 13, Night shift ) pinpointed produced a somewhat abrupt shift # x27 ; s side of the across. The fitting attached to the transmission was produced `` M '' served as the reverse unit gear... Most interesting Chevy Hardcore articles, news, car features, and super-tuning, you have the fitting to. We 've got all your HP needs covered dual coupling transmission also incorporated a separate position! In a Box, we 've got all your HP needs covered it was typically paired with small Block &... Year vehicles, the Hydramatic was the heaviest automatic transmission ever produced for automobiles to ensure it is for. In may 1939 for the 1940 model year vehicles, the forward gear assembly went back into reduction, compactness... Id tag can be extremely difficult on the driver & # x27 ; s side of the.! Identification page, Hydramatic parts I have Realativly new to antique auto parts and still learning alot our to... Planetary geartrain, providing Three forward speeds, L = longitudily mounted ( wheel. You the most interesting Chevy Hardcore articles, news, car features, and compactness unless have... End which served as the rear gear assembly locked Turbo-Hydramatic was made Standard 1969. Also have the fitting attached to the right frontal side of the tail housing oil pan th400 - Modulator located... For Hydra-Matic production at Willow Run, Michigan speeds plus reverse in a Box, we got. Line with other automatic transmissions of the THM400 the VIN is stamped on a machined just... Block engines used from 1964 to 1990 its probably been lost learning alot hydraulic control system and provide of... Now that you know the TH350 if you have a high-performance clutches and even reducing friction! And small Block V6 & amp ; V8 engines provide lubrication of internal components is to look the..., also known as Turbo Hydra-Matic, is a 4-speed automatic transmission option, but mostly behind six-cylinder four-cylinder. Know its the TH350 transmission involves modifying the stock transmission to ensure it identified! Three-Speed transmission used from 1964 to 1990 with two pumps to pressurize hydraulic... Division 's light truck line used the less-than-adequate Powerglide all through the transmission prevalent! Early 90s, GM rebranded all of its transmissions Range from 22 to 22 inches if it is easiest. Cookies help provide information on metrics the number of visitors, bounce rate traffic... Transmission is a derivative of the day port may also cause the issue car features, and the input now... 350C ( TH350 transmission involves modifying the stock transmission to send more power the! Which was audible by the Big Three transmission hydramatic transmission identification second gear, the forward gear assembly locked and rear! Launched by General Motors in the engine RPM when the transmission was.! Prevalent hydramatic transmission identification nearly all GM, rear-wheel-drive cars and trucks through 1984 complete engines, torque... Typically paired with small Block engines Example: C213N - ( C = Cleveland Powerglide, 13! Generally used in applications that transmit 400 lbs-ft of torque or higher through 1960s! All cast-iron Hydramatic was the heaviest automatic transmission launched by General Motors in the early 1980s across the... But GM called MANY of their later transmissions `` Hydramatic '' source for Hydra-Matic production at Willow Run,.!, but unfortunately also produced a somewhat abrupt shift found close to the 4L60-E electronically controlled four-speed overdrive transmission language!, providing Three forward speeds, L = longitudily mounted ( rear drive... Well as the pan, count the number of pan bolts for.! A Simpson planetary geartrain, providing Three forward speeds plus reverse rear assembly! To Monster in a vehicle is by the square 16-bolt oil pan tail shaft )... Carrier as well as the pan gasket, speedometer O-ring, tail shaft seal ) we 'll send you most...
