GM 4T80 transmission

Last updated
4T80-E
Ypsilanti Automotive Heritage Museum May 2015 065 (Hydra-Matic 4T80 transmission).jpg
A Hydra-Matic 4T80 transmission at the Ypsilanti Automotive Heritage Museum
Overview
Manufacturer General Motors
Production1993–2011
Body and chassis
Class 4-speed transverse automatic transmission
Chronology
Predecessor Turbo-Hydramatic 125
Successor 6T70

The 4T80E is a series of front wheel drive fully automatic transmissions from General Motors. Designed for transverse engine configurations, the series includes 4 gear bearing overdrive [1] [2] 2 electronic shift solenoids, and electronic force motor to control line pressure. [3]

Contents

The 4Txx family is an evolution of the original Turbo-Hydramatic 125 transverse automatic introduced in the 1980 model year "X" body.

The 4T80-E transmission is electronically controlled and features an automatic overdrive transaxle with an electronically controlled torque converter clutch. The 4T80 originally used a viscous clutch, but this was changed in 2005 to ECCC. [1] [4] [2] [3]

The 4T80 is built at Willow Run Transmission in Ypsilanti, Michigan.

4T80-E

The "MH1" 4T80-E is able to handle vehicles up to 8000 lb (3628.74 kg) GVWR. The final drive ratio is 3.11:1, 3.48:1, or 3.71:1. The 4T80 uses a viscous torque converter clutch, which was replaced with EC3 (electronically controlled converter clutch) in 2005. Transmission broadcast codes in 2005 for the ECCC transmission are 5ABN and 5MMN. [1]

The 4T80-E is a hydramatic transmission and was developed for use with V8 front-wheel-drive cars, and at the time exclusively the Cadillac Northstar engine. [3] It was designed with extreme power handling capabilities at the time. The 4T80-E debuted in the Cadillac Allanté in 1993 along with the Northstar Double Overhead Camshaft (DOHC) V8. It reportedly cost 80% more than a similar GM 4T60 transmission and weighed 60 lb (27 kg) more. [5]

This transaxle has been used in many of GM's front drive large sedans. The Cadillac Division had exclusive usage of the 4T80-E until the 1995 Oldsmobile Aurora debuted [6] (may not be true) . The Aurora had the 4.0L version of the Northstar V8 coupled to a 4T80-E. It wasn't until 2004 that Pontiac got usage of this transaxle in the Bonneville GXP which employed a 275 horsepower version of the Northstar 4.6L V8.

The 4T80-E was last used in 2011 on the Cadillac DTS and the Buick Lucerne (when equipped with the 4.6L Northstar). [7]

Gear ratios:

1234R
2.961.6261.000.6812.13

Applications: [8] [7]

Issues

the transmission had no performance parts, causing stress at over 300 hp [4]

and in some use cenarios, faulty seals will degrade the entire transmission [9]

most of these where fixed in the later models [10]

See also

Related Research Articles

<span class="mw-page-title-main">Oldsmobile Toronado</span> Motor vehicle

The Oldsmobile Toronado is a personal luxury car manufactured and marketed by the Oldsmobile division of General Motors from 1966 to 1992 over four generations. The Toronado was noted for its transaxle version of GM's Turbo-Hydramatic transmission, making it the first U.S.-produced front-wheel drive automobile since the demise of the Cord 810/812 in 1937.

<span class="mw-page-title-main">Oldsmobile Aurora</span> Motor vehicle

The Oldsmobile Aurora is a luxury sedan, manufactured and marketed by General Motors from 1994 until 2003 over two generations — sharing platforms with Buick Riviera and using the Cadillac-derived G platform. At the time of production, the Aurora was the flagship vehicle in the Oldsmobile lineup. It originated as the 1989 Oldsmobile tube car concept.

<span class="mw-page-title-main">Northstar engine series</span> Family of high performance 90° V engines produced by General Motors

The Northstar engine is a family of high-performance 90° V engines produced by General Motors between 1993 and 2011. Regarded as GM's most technically complex engine, the original double overhead cam, four valve per cylinder, aluminum block/aluminum head V8 design was developed by Oldsmobile R&D, but is most associated with Cadillac's Northstar series.

<span class="mw-page-title-main">Cadillac V8 engine</span> Reciprocating internal combustion engine

The term Cadillac V8 may refer to any of a number of V8 engines produced by the Cadillac division of General Motors since it pioneered the first such mass-produced engine in 1914.

<span class="mw-page-title-main">GMC motorhome</span> American recreational vehicle

The GMC Motorhome is a recreational vehicle that was manufactured by the GMC Truck & Coach Division of General Motors for model years 1973–1978 in Pontiac, Michigan, USA — as the only complete motorhome built by a major auto/truck manufacturer. Manufactured in 23 and 26 ft lengths, the design was noted for its front-wheel drive and its low profile, fully integrated body.

Toyota Motor Corporation's A family is a family of automatic FWD/RWD/4WD/AWD transmissions built by Aisin-Warner. They share much in common with Volvo's AW7* and Aisin-Warner's 03-71* transmissions, which are found in Suzukis, Mitsubishis, and other Asian vehicles.

<span class="mw-page-title-main">Cadillac DTS</span> Motor vehicle

The Cadillac DTS is a full-size car that was built by the American company Cadillac from 2005 until May 2011. It is a four-door sedan that comes in five- or six-seat variants. The DTS debuted at the 2005 Chicago Auto Show and was manufactured at GM's Detroit/Hamtramck Assembly factory. It uses GM's G-platform for front-engine, front-wheel-drive automobiles. The DTS was a very mildly revised iteration of the eighth-generation Deville, using the brand's new naming convention, set by the CTS and STS. Writing for the Los Angeles Times, noted reviewer Warren Brown called the DTS "a large, exceptionally comfortable front-wheel-drive luxury sedan." The nameplate DTS is an acronym for DeVille Touring Sedan.

<span class="mw-page-title-main">Hydramatic</span> Automatic transmission

Hydramatic is an automatic transmission developed by both General Motors' Cadillac and Oldsmobile divisions. Introduced in 1939 for the 1940 model year vehicles, the Hydramatic was the first mass-produced fully-automatic transmission developed for passenger automobile use.

<span class="mw-page-title-main">TorqueFlite</span> Automatic transmission made by Chrysler

TorqueFlite is the trademarked name of Chrysler Corporation's automatic transmissions, starting with the three-speed unit introduced late in the 1956 model year as a successor to Chrysler's two-speed PowerFlite. In the 1990s, the TorqueFlite name was dropped in favor of alphanumeric designations, although the latest Chrysler eight-speed automatic transmission has revived the name.

Turbo-Hydramatic or Turbo Hydra-Matic is the registered tradename for a family of automatic transmissions developed and produced by General Motors. These transmissions mate a three-element turbine torque converter to a Simpson planetary geartrain, providing three forward speeds plus reverse.

<span class="mw-page-title-main">DEXRON</span> Trade name for a group of technical specifications for automatic transmission fluid

DEXRON is the trade name for a group of technical specifications for automatic transmission fluid (ATF) created by General Motors (GM). The name was first registered as a trademark and later evolved into a brand of GM. GM licenses the name and specifications to companies that manufacture the fluid and sell it under their own brand names. Not all DEXRON fluids are licensed by GM for reselling under another brand name. To be licensed, the product must have a license number that begins with the letters B through J and include a "DEXRON Approved" sticker on its container. Like many automobile manufacturers, GM uses transmissions sourced from other suppliers or transmission manufacturers around the world; many of these may use their own unique fluid.

Roto Hydramatic was an automatic transmission built by General Motors and used in some Oldsmobile, Pontiac and Holden models between 1961 and 1965. It was based on the earlier, four-speed Hydramatic, but was more compact, providing only three forward speeds plus a small 8" fluid coupling with a stator inside of the fluid coupling. Oldsmobile, one of the companies that used this transmission in some of its cars, called the fluid couplings stator the "Accel-A-Rotor." The lightweight, aluminum-cased transmission was sometimes nicknamed the "Slim Jim." HydraMatic Division calls the Roto a four-range, three-gear HydraMatic.

The Super Turbine 300 was a two-speed automatic transmission built by General Motors. It was used in various Buick, Oldsmobile, and Pontiac models from 1964-1969. It was the same transmission marketed under different brand names by each division including ST-300 by Buick, Jetaway by Olds and simply Automatic by Pontiac.

The 4L60E is a series of automatic transmissions from General Motors. Designed for longitudinal engine configurations, the series includes 4 forward gears and 1 reverse gear. The 4L60E is the electronically commanded evolution of the Turbo-Hydramatic 700R4, originally produced in 1982.

The 4T40-E and 4T45-E are a series of automatic transaxles from General Motors. Designed for transverse engine configurations, the series includes 4 forward gears. The 4Txx family replaced the Turbo-Hydramatic 125 transverse three speed automatic introduced in 1980.

<span class="mw-page-title-main">Turbo-Hydramatic 125</span> Motor vehicle

The Turbo-Hydramatic 125 was the first in a line of automatic transmissions from General Motors designed for transverse engine application. Introduced in 1980, the line evolved into today's 4T40/45/65/80 line.

The 4T60-E is a series of automatic transmissions from General Motors. Designed for transverse engine configurations, the series includes 4 forward gears. The 4Txx family is an evolution of the original Turbo-Hydramatic 125 transverse automatic introduced in the late 1970s and the Turbo-Hydramatic 440 transmission developed in the mid-1980s.

<span class="mw-page-title-main">GM 6L transmission</span> Automatic transmission family produced by General Motors

The 6L 50 is a 6-speed longitudinally-mounted automatic transmission produced by General Motors. It is very similar in design to the larger GM 6L 80 and 6L 90, and is produced at GM Powertrain plants in Toledo, Ohio; Silao, Guanajuato, Mexico; and by the independent Punch Powerglide company in Strasbourg, France.

References

  1. 1 2 3 "GM/Chevrolet Transmission Parts".
  2. 1 2 https://atoc.ru/uploads/manual/5fb79976f29ee.pdf [ bare URL PDF ]
  3. 1 2 3 "4T40-E/4T45-E, 4T80-E, & 6-speed Auto transmission info". www.gmtuners.com. Retrieved 2024-06-03.
  4. 1 2 "4T80-E TRANSMISSION for 500HP 3.6l VVT ???". Pennock's Fiero Forum. Retrieved 2024-06-03.
  5. "Six speed manual thoughts". Antique Automobile Club of America - Discussion Forums. 2006-11-29. Retrieved 2024-06-03.
  6. https://transpartsnow.com/gm-chevrolet-transmissions-parts/4t80e-transmission/#:~:text=This%20transaxle%20has%20been%20used,the%201995%20Oldsmobile%20Aurora%20debuted.
  7. 1 2 "ATK Engines 4030A-84: Remanufactured GM 4T80E FWD Automatic Transmission - JEGS". JEGS High Performance. Retrieved 2024-06-03.
  8. "4T80E Rebuild Kit 4T80-E Automatic Transmission Transaxle Master Banner Overhaul Box Set". Oregon Performance Transmission. Retrieved 2024-06-03.
  9. "4t80e woes". Cadillac Owners Forum. 2014-09-18. Retrieved 2024-06-03.
  10. https://bobistheoilguy.com/forums/threads/4t80-reliability-and-06-northstar.379719/ [ bare URL ]