TorqueFlite
Encyclopedia
TorqueFlite is the trademarked name of Chrysler Corporation's automatic transmission
s, 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.
s were 2.45:1 in first, 1.45 in second, and 1.00 in third. The transmission was controlled by a series of pushbuttons located on the vehicle's dashboard. The buttons were generally at the extreme driver's side end of the dash, i.e., the left in left-hand drive vehicles, and the right in right-hand drive ones. However, this was not always the case; the 1962 Dodge Phoenix, a right-hand drive export model sold in Australia
and South Africa
, used the U.S. 1962 Plymouth Valiant
instrument cluster assembly, into the left end of which were integrated the transmission pushbuttons. Button arrangement varied by vehicle model and year; sequence was Reverse, Neutral, Drive, Second, and First, from top to bottom with vertically-arrayed buttons, from left to right with horizontally-arrayed buttons, and clockwise starting at upper left with clustered buttons.
A parking lock was not provided until the advent of the aluminum-case Torqueflites in 1960 (standard-duty A-904) and 1962 (heavy-duty A-727), at which point a lever was added adjacent to the pushbuttons: Throwing the lever to the "Park" position placed the car into Neutral and engaged a lock pawl on the transmission's output shaft. Throwing the park lever out of "Park" position unlocked the shift buttons so that a driving range could be selected. The buttons were replaced by conventional steering column- or floor-mounted shift levers in all automatic Chrysler-built vehicles for the 1965 model year, though floor levers were available in certain sporty 1964 models.
Like a vehicle with a General Motors
Hydramatic
, a vehicle with a Torqueflite transmission starts out in first gear when the Drive or Second position is selected. This is in contrast to vehicles with several automatics from Ford
and Borg-Warner, which start out in second rather than first if the Second position is selected.
1962 brought the addition of a canister-style fluid filter installed in the cooler line. For 1964, the canister filter was eliminated, and the transmission's internal intake screen was replaced by an efficient Dacron filter. Fluid life starting in 1964 was extended from 12000 mi (19,312.1 km) to 50000 mi (80,467 km), providing justification for the deletion of the drain plug from the oil pan.
For 1966, the twin-cable shift and park control mechanism (a holdover from the push-button operation) was replaced by a solid shift control linkage consisting of a series of pushrods, rotating rods and levers. The rear pump was eliminated, which simplified and cost-reduced the transmission but rendered push-starting impossible; Chrysler engineers reasoned that improved electrical and fuel systems reduced the need to push-start vehicles, and safety concerns weighed against doing so. The gated shift quadrants also permitted the deletion of the reverse safety blocker valve which, in TorqueFlites made through 1965, had shifted the transmission harmlessly into Neutral if the Reverse position were selected with the vehicle moving forward above approximately 3 mph (4.8 km/h).
In 1968, part-throttle downshift functionality was added to A-904 transmissions used with 6-cylinder engines. This feature permitted the transmission to shift from third to second gear in response to moderate accelerator pressure. Previously, an automatic 3-2 downshift occurred only if the driver pushed the accelerator to the floor. This change was made to maintain acceptable in-town performance with taller final-drive ratios in the rear axle — 2.76:1 rear axle gears were being furnished in applications previously equipped with 2.93:1 or 3.23:1 gearsets. Part-throttle downshift functionality was extended to V8 A-904s in 1969, and to most A-727 transmissions in 1970 to 1971.
In 1978, most Torqueflite transmissions gained a lockup torque converter
clutch to mechanically connect the converter's impeller and turbine, eliminating slip for better highway fuel economy
. This addition required the removal of the torque converter drain plug.
For 1980, a wide-ratio gearset was released for the A904, A998 and A999, with 2.74:1 in first, 1.54 in second, and 1.00 in third.
Torqueflite was an available option or standard equipment, depending on model and year, on all Chrysler products: Plymouth, Dodge
, DeSoto
, Chrysler and Imperial. It was also used by American Motors beginning in 1972, where it was named TorqueCommand, as well as by Jeep
, International Harvester
, Maserati Quattroporte
, Monteverdi http://www.allpar.com/model/monterverdi.html and Bristol
http://www.bristolcars.co.uk, as well as several brands of light and medium-duty trucks and panel vans. When installed in Dodge trucks and vans, the transmission was marketed as LoadFlite.
In the 1990s, the transmissions were renamed, however the original Torqueflite design remained the basis of many Chrysler designed (and built) transmissions thru 2007 (and FWD transaxles thru 2000).
and the Simpson Gearset, two identical planetary gearsets sharing a common sun gear. Chrysler Corporation licensed this gearset from Simpson in 1955.
case and no parking pawl.
Gear ratios:
Applications:
. Starting in the early 1990s, it was used in trucks and vans. The overdrive fourth gear ratio is 0.69:1.
Gear ratios:
Applications:
Gear ratios:
Applications:
and monster truck
applications because of their controllability and strength.
was known as "A-727-RG" ( Raised-deck "G" Motor )
cars made by Mitsubishi in Japan. This smaller transmission used a 10 in (25.4 cm) torque converter.
Uses:
engine.
The 998 was equipped with four direct friction plates.
These automatics had lower first and second gear ratios to allow the lower-powered engines to provide better acceleration without sacrificing highway fuel economy.
The 999 was equipped with five direct friction plates.
These automatics had lower first and second gear ratios to allow the lower-powered engines to provide better acceleration without sacrificing highway fuel economy.
Uses:
Applications:
Applications:
Applications:
Applications:
Gear ratios:
Applications:
derivatives of the A904 Torqueflite.
In the late 1970s, Chrysler designed the A404 TorqueFlite three-speed automatic transaxle for its front wheel drive Dodge Omni
and Plymouth Horizon subcompact cars. This transaxle would be upgraded in the 1980s into the A413 and A670 units, which were progressively heavier-duty, for Chrysler's K-cars and their derivatives, including the minivans. The four-speed Ultradrive
electronic four-speed automatic transaxle would eventually replace it, but the three-speed lasted for more than a decade after the 1989 debut of the four-speed unit.
engines from Chrysler, commonly the 1.7 L Volkswagen
unit.
. It was available both with and without a lockup torque converter
. This transmission was also used in the Dodge Neon
from 1995-2001. The A413 is broadly similar in concept to Ford's ATX
three-speed unit.
in the K-cars
from 1981-1985 and minivans from 1984 through 1987.
Gear ratios:
See also=
Automatic transmission
An automatic transmission is one type of motor vehicle transmission that can automatically change gear ratios as the vehicle moves, freeing the driver from having to shift gears manually...
s, starting with the three-speed unit introduced late in the 1956 model year
Model year
The model year of a product is a number used worldwide, but with a high level of prominence in North America, to describe approximately when a product was produced, and indicates the coinciding base specification of that product....
as a successor to Chrysler's two-speed PowerFlite
PowerFlite
PowerFlite is a two-speed automatic transmission produced by the Chrysler Corporation and used in their passenger cars from 1954 to 1961. Production began in late 1953; despite the launch of Chrysler's three-speed TorqueFlite automatic in 1956, the simple and durable PowerFlite remained available...
. In the 1990s, the TorqueFlite name was dropped in favor of alphanumeric designations.
History
The first Torqueflites provided three speeds forward plus reverse. Gear ratioGear ratio
The gear ratio of a gear train is the ratio of the angular velocity of the input gear to the angular velocity of the output gear, also known as the speed ratio of the gear train. The gear ratio can be computed directly from the numbers of teeth of the various gears that engage to form the gear...
s were 2.45:1 in first, 1.45 in second, and 1.00 in third. The transmission was controlled by a series of pushbuttons located on the vehicle's dashboard. The buttons were generally at the extreme driver's side end of the dash, i.e., the left in left-hand drive vehicles, and the right in right-hand drive ones. However, this was not always the case; the 1962 Dodge Phoenix, a right-hand drive export model sold in Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...
and South Africa
South Africa
The Republic of South Africa is a country in southern Africa. Located at the southern tip of Africa, it is divided into nine provinces, with of coastline on the Atlantic and Indian oceans...
, used the U.S. 1962 Plymouth Valiant
Plymouth Valiant
The Plymouth Valiant is an automobile manufactured by the Plymouth division of Chrysler Corporation in the United States from 1960 to 1976. It was created to give the company an entry in the compact car market emerging in the late 1950s...
instrument cluster assembly, into the left end of which were integrated the transmission pushbuttons. Button arrangement varied by vehicle model and year; sequence was Reverse, Neutral, Drive, Second, and First, from top to bottom with vertically-arrayed buttons, from left to right with horizontally-arrayed buttons, and clockwise starting at upper left with clustered buttons.
A parking lock was not provided until the advent of the aluminum-case Torqueflites in 1960 (standard-duty A-904) and 1962 (heavy-duty A-727), at which point a lever was added adjacent to the pushbuttons: Throwing the lever to the "Park" position placed the car into Neutral and engaged a lock pawl on the transmission's output shaft. Throwing the park lever out of "Park" position unlocked the shift buttons so that a driving range could be selected. The buttons were replaced by conventional steering column- or floor-mounted shift levers in all automatic Chrysler-built vehicles for the 1965 model year, though floor levers were available in certain sporty 1964 models.
Like a vehicle with a General Motors
General Motors
General Motors Company , commonly known as GM, formerly incorporated as General Motors Corporation, is an American multinational automotive corporation headquartered in Detroit, Michigan and the world's second-largest automaker in 2010...
Hydramatic
Hydramatic
Hydramatic was 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 fully automatic mass-produced transmission developed for passenger automobile use.-History:During the...
, a vehicle with a Torqueflite transmission starts out in first gear when the Drive or Second position is selected. This is in contrast to vehicles with several automatics from Ford
Ford Motor Company
Ford Motor Company is an American multinational automaker based in Dearborn, Michigan, a suburb of Detroit. The automaker was founded by Henry Ford and incorporated on June 16, 1903. In addition to the Ford and Lincoln brands, Ford also owns a small stake in Mazda in Japan and Aston Martin in the UK...
and Borg-Warner, which start out in second rather than first if the Second position is selected.
1962 brought the addition of a canister-style fluid filter installed in the cooler line. For 1964, the canister filter was eliminated, and the transmission's internal intake screen was replaced by an efficient Dacron filter. Fluid life starting in 1964 was extended from 12000 mi (19,312.1 km) to 50000 mi (80,467 km), providing justification for the deletion of the drain plug from the oil pan.
For 1966, the twin-cable shift and park control mechanism (a holdover from the push-button operation) was replaced by a solid shift control linkage consisting of a series of pushrods, rotating rods and levers. The rear pump was eliminated, which simplified and cost-reduced the transmission but rendered push-starting impossible; Chrysler engineers reasoned that improved electrical and fuel systems reduced the need to push-start vehicles, and safety concerns weighed against doing so. The gated shift quadrants also permitted the deletion of the reverse safety blocker valve which, in TorqueFlites made through 1965, had shifted the transmission harmlessly into Neutral if the Reverse position were selected with the vehicle moving forward above approximately 3 mph (4.8 km/h).
In 1968, part-throttle downshift functionality was added to A-904 transmissions used with 6-cylinder engines. This feature permitted the transmission to shift from third to second gear in response to moderate accelerator pressure. Previously, an automatic 3-2 downshift occurred only if the driver pushed the accelerator to the floor. This change was made to maintain acceptable in-town performance with taller final-drive ratios in the rear axle — 2.76:1 rear axle gears were being furnished in applications previously equipped with 2.93:1 or 3.23:1 gearsets. Part-throttle downshift functionality was extended to V8 A-904s in 1969, and to most A-727 transmissions in 1970 to 1971.
In 1978, most Torqueflite transmissions gained a lockup torque converter
Torque converter
In modern usage, a torque converter is generally a type of hydrodynamic fluid coupling that is used to transfer rotating power from a prime mover, such as an internal combustion engine or electric motor, to a rotating driven load...
clutch to mechanically connect the converter's impeller and turbine, eliminating slip for better highway fuel economy
Fuel economy in automobiles
Fuel usage in automobiles refers to the fuel efficiency relationship between distance traveled by an automobile and the amount of fuel consumed....
. This addition required the removal of the torque converter drain plug.
For 1980, a wide-ratio gearset was released for the A904, A998 and A999, with 2.74:1 in first, 1.54 in second, and 1.00 in third.
Torqueflite was an available option or standard equipment, depending on model and year, on all Chrysler products: Plymouth, Dodge
Dodge
Dodge is a United States-based brand of automobiles, minivans, and sport utility vehicles, manufactured and marketed by Chrysler Group LLC in more than 60 different countries and territories worldwide....
, DeSoto
DeSoto (automobile)
The DeSoto was a brand of automobile based in the United States, manufactured and marketed by the Chrysler Corporation from 1928 to 1961. The DeSoto logo featured a stylized image of Hernando de Soto...
, Chrysler and Imperial. It was also used by American Motors beginning in 1972, where it was named TorqueCommand, as well as by Jeep
Jeep
Jeep is an automobile marque of Chrysler . The first Willys Jeeps were produced in 1941 with the first civilian models in 1945, making it the oldest off-road vehicle and sport utility vehicle brand. It inspired a number of other light utility vehicles, such as the Land Rover which is the second...
, International Harvester
International Harvester
International Harvester Company was a United States agricultural machinery, construction equipment, vehicle, commercial truck, and household and commercial products manufacturer. In 1902, J.P...
, Maserati Quattroporte
Maserati Quattroporte
The Maserati Quattroporte is a luxury four-door saloon made by Maserati in Italy. The name translated from Italian literally means "four doors". There have been five generations of the car, each separated by a period of roughly five years....
, Monteverdi http://www.allpar.com/model/monterverdi.html and Bristol
Bristol
Bristol is a city, unitary authority area and ceremonial county in South West England, with an estimated population of 433,100 for the unitary authority in 2009, and a surrounding Larger Urban Zone with an estimated 1,070,000 residents in 2007...
http://www.bristolcars.co.uk, as well as several brands of light and medium-duty trucks and panel vans. When installed in Dodge trucks and vans, the transmission was marketed as LoadFlite.
In the 1990s, the transmissions were renamed, however the original Torqueflite design remained the basis of many Chrysler designed (and built) transmissions thru 2007 (and FWD transaxles thru 2000).
Nomenclature
Torqueflite transmissions and transaxles made through 1991 were assigned arbitrary designations consisting of the letter "A" followed by three digits. 1992 and later units have four-character designations in which the first through fourth characters indicate, respectively, the number of forward speeds, torque capacity, drive type or transaxle orientation, and control system:| Forward speeds | Torque capacity | Drive type | Control |
|---|---|---|---|
| 1 (low) to 9 (high) | R (Rear wheel) T (Transverse) A (All-wheel) |
H (Hydromechanical) E (Electronic) |
Technology
Torqueflites use a torque converterTorque converter
In modern usage, a torque converter is generally a type of hydrodynamic fluid coupling that is used to transfer rotating power from a prime mover, such as an internal combustion engine or electric motor, to a rotating driven load...
and the Simpson Gearset, two identical planetary gearsets sharing a common sun gear. Chrysler Corporation licensed this gearset from Simpson in 1955.
A488
The original TorqueFlite was designated A488, with a cast ironCast iron
Cast iron is derived from pig iron, and while it usually refers to gray iron, it also identifies a large group of ferrous alloys which solidify with a eutectic. The color of a fractured surface can be used to identify an alloy. White cast iron is named after its white surface when fractured, due...
case and no parking pawl.
A500
The A500, later 40RH/42RH (hydraulic) and 40RE/42RE/44RE (electronic), was an A904 derivative used in trucks and vans. Introduced in the 1989 model year on a limited basis, it was the first light-duty Chrysler four-speed automatic and was placed behind the 3.9 L and 5.2 L engines for light-duty purposes. A tailshaft overdrive unit was bolted to the rear of the case to provide a total of four forward speeds, and was replaced by the 42RLE in 2004. This transmission is known for its whistle upon acceleration and deceleration.Gear ratios:
| 1 | 2 | 3 | 4 | R |
|---|---|---|---|---|
| 2.74 | 1.54 | 1.00 | 0.69 | 2.21 |
Applications:
- 1989-2001 Dodge RamDodge RamThe Dodge Ram is a full-size pickup truck manufactured by the Chrysler Group LLC. As of late 2010, it has been sold under the Ram Trucks brand. Previously, Ram was part of the Dodge lineup of light trucks...
pickup 150/1500 V6/V8(2WD) - 1989-2003 Dodge Ram Van B150/B250 V6/V8
- 1989-2003 Dodge Dakota
- 1993-2004 Jeep Grand Cherokee I6
- 1996-1998 Jeep Grand Cherokee 5.2 V8
A518
The A518, later 46RH (hydraulic controlled governor pressure) and 46RE (electronic controlled governor pressure), is an A727 derivative with overdriveOverdrive (mechanics)
Overdrive is a term used to describe a mechanism that allows an automobile to cruise at sustained speed with reduced engine RPM, leading to better fuel economy, lower noise and lower wear...
. Starting in the early 1990s, it was used in trucks and vans. The overdrive fourth gear ratio is 0.69:1.
Gear ratios:
| 1 | 2 | 3 | 4 | R |
|---|---|---|---|---|
| 2.45 | 1.45 | 1.00 | 0.69 | 2.35 |
Applications:
- Dodge RamDodge RamThe Dodge Ram is a full-size pickup truck manufactured by the Chrysler Group LLC. As of late 2010, it has been sold under the Ram Trucks brand. Previously, Ram was part of the Dodge lineup of light trucks...
pickup and vans 1500/2500/3500 V8 engines (DGT) - Dodge DakotaDodge DakotaThe Dodge Dakota is a mid-size pickup truck from Chrysler's Ram division. From its introduction through 2009, it was marketed by Dodge. The first Dakota was introduced in 1986 as a 1987 model alongside the redesigned Dodge Ram 50...
R/T (1998-2003) - Jeep Grand CherokeeJeep Grand CherokeeThe Jeep Grand Cherokee is a Mid-size SUV produced by the Jeep division of Chrysler. While some other SUVs were manufactured with body on frame construction, the Jeep Grand Cherokee has always used a unibody chassis.- Development :...
1998 5.9L - Jeep Grand CherokeeJeep Grand CherokeeThe Jeep Grand Cherokee is a Mid-size SUV produced by the Jeep division of Chrysler. While some other SUVs were manufactured with body on frame construction, the Jeep Grand Cherokee has always used a unibody chassis.- Development :...
1993-1995 5.2 V8
A618
The A618, later 47RH (hydraulic controlled governor pressure) and 47RE (electronic controlled governor pressure), is a heavier-duty version of A518. It was used in trucks and vans starting in the mid-1990s. While currently used with some internal changes when coupled to the 5.9 L Cummins Turbo-Diesel and the 8.0 L V-10 applications, it's still a 727 with overdrive and stronger internal parts. It has an input torque rating of 450 lbft.Gear ratios:
| 1 | 2 | 3 | 4 | R |
|---|---|---|---|---|
| 2.45 | 1.45 | 1.00 | 0.69 | 2.21 |
Applications:
- Dodge RamDodge RamThe Dodge Ram is a full-size pickup truck manufactured by the Chrysler Group LLC. As of late 2010, it has been sold under the Ram Trucks brand. Previously, Ram was part of the Dodge lineup of light trucks...
pickups 2500/3500 ISB Diesel and iron V-10 (DGP) - Dodge RamDodge RamThe Dodge Ram is a full-size pickup truck manufactured by the Chrysler Group LLC. As of late 2010, it has been sold under the Ram Trucks brand. Previously, Ram was part of the Dodge lineup of light trucks...
SRT-10 (DGP)f
A727
The A488 was replaced in 1962 with the A727 (later 36RH and 37RH), with an aluminum case to reduce weight by about 60 lb (27.2 kg). The A727 incorporated a parking pawl and various internal improvements, and used a 10.75 in (27.3 cm) or 11.75 in (29.8 cm) torque converter. The heavier-duty A727 Torqueflites became — and remain — popular for drag racingDrag racing
Drag racing is a competition in which specially prepared automobiles or motorcycles compete two at a time to be the first to cross a set finish line, from a standing start, in a straight line, over a measured distance, most commonly a ¼-mile straight track....
and monster truck
Monster truck
A monster truck is a pickup truck, typically styled after pickup trucks' bodies, modified or purposely built with extremely large wheels and suspension...
applications because of their controllability and strength.
- 1962-1978 361 , 383 , 400 B-Motor V8
- 1962-1978 413 , 426 wedge , 440 RB-V8
- 1964-1965 426 Hemi Super Stock
- 1966-1971 426 "Street" Hemi
- 1962-1966 318 "A" "Poly" V8
- 1968-1973 340
- 1971-1978 360
- H.D. 225 Slant Six (Police , Taxi , Light-Duty Pickups , "A" Van , "B" Van )
was known as "A-727-RG" ( Raised-deck "G" Motor )
- 1980-1991 AMC 304, 360 V8 "Torque-Command 8"
A904
For standard-duty applications in smaller and lighter vehicles with 6-cylinder or small V8 engines, the compact A904 (later 30RH) was introduced in 1960. This transmission used a 10.75 in (27.3 cm) torque converter. There was also a smaller version of this transmission used in the Dodge Colt/Plymouth ChampDodge Colt
The Dodge Colt and the similar Plymouth Champ and Plymouth Colt, were subcompact cars sold by Dodge and Plymouth from 1970 to 1994. They were captive imports from Mitsubishi Motors, initially twins of the rear-wheel drive Galant and Lancer families before shifting to the smaller front-wheel drive...
cars made by Mitsubishi in Japan. This smaller transmission used a 10 in (25.4 cm) torque converter.
Uses:
- 1960-1976 170 , 198 , 225 Slant Six
- 1964-1969 273 LA-V8
- 1967-1978 318 LA-V8
- 1975-1978 360 2Bbl LA-V8
- 1972-c.1978 AMC I-6 "Torque-Command 6"
A998
The A998 (later, 31RH) was a medium-duty, wide-ratio version of the small-frame A904 transmission for use with medium-power V8 engines and the 3.9 L V6Chrysler LA engine
The LA engines are a family of pushrod OHV 90° V-block gasoline engines built by Chrysler Corporation and factory-installed in passenger vehicles, trucks and vans, commercial vehicles, marine and industrial applications from 1964 through 2003...
engine.
The 998 was equipped with four direct friction plates.
These automatics had lower first and second gear ratios to allow the lower-powered engines to provide better acceleration without sacrificing highway fuel economy.
A999
The A999 (later 32RH) was a heavier-duty, wide-ratio version of the small-frame A904 transmission for use with medium-power V8 engines and the 3.9 L V6 engine.The 999 was equipped with five direct friction plates.
These automatics had lower first and second gear ratios to allow the lower-powered engines to provide better acceleration without sacrificing highway fuel economy.
Uses:
- Jeep Wrangler TJ's with the 4.0 straight 6
- Jeep Wagoneer/Grand Wagoneer with the 258ci (4.2L) straight 6
46RH
A renamed A518. A727 with overdrive and hydraulic control.Applications:
- 1994-1995 Dodge RamDodge RamThe Dodge Ram is a full-size pickup truck manufactured by the Chrysler Group LLC. As of late 2010, it has been sold under the Ram Trucks brand. Previously, Ram was part of the Dodge lineup of light trucks...
2500/3500 V8 - 1993-1995 (Jeep Grand Cherokee 5.2)
- 1995 Dodge DakotaDodge DakotaThe Dodge Dakota is a mid-size pickup truck from Chrysler's Ram division. From its introduction through 2009, it was marketed by Dodge. The first Dakota was introduced in 1986 as a 1987 model alongside the redesigned Dodge Ram 50...
5.2l magnum v-8 - 1995 Dodge Ram Van 2500 5.2L Magnum V8
46RE
A renamed second-generation A518. A727 with overdrive and electrical control.Applications:
- 1996 Dodge DakotaDodge DakotaThe Dodge Dakota is a mid-size pickup truck from Chrysler's Ram division. From its introduction through 2009, it was marketed by Dodge. The first Dakota was introduced in 1986 as a 1987 model alongside the redesigned Dodge Ram 50...
V8 (Also 98-03 Dakota 5.9L R/T) - 1996-2002 Dodge RamDodge RamThe Dodge Ram is a full-size pickup truck manufactured by the Chrysler Group LLC. As of late 2010, it has been sold under the Ram Trucks brand. Previously, Ram was part of the Dodge lineup of light trucks...
1500/2500/3500 V8 - 1998-2000 Dodge DurangoDodge DurangoThe Dodge Durango is a full-size crossover SUV from the Dodge division of Chrysler. It was introduced in 1998 as a mid-size SUV, and as a replacement for the Ramcharger discontinued in the North American market in 1993, and was redesigned to full-size for 2004....
5.9L V8 (4WD or 2WD) - 1998 Jeep Grand CherokeeJeep Grand CherokeeThe Jeep Grand Cherokee is a Mid-size SUV produced by the Jeep division of Chrysler. While some other SUVs were manufactured with body on frame construction, the Jeep Grand Cherokee has always used a unibody chassis.- Development :...
5.9L V8 (4WD)
47RH
A renamed A618 and hydraulic control.Applications:
- 1994-1995 Dodge RamDodge RamThe Dodge Ram is a full-size pickup truck manufactured by the Chrysler Group LLC. As of late 2010, it has been sold under the Ram Trucks brand. Previously, Ram was part of the Dodge lineup of light trucks...
2500/3500 Diesel/V10
47RE
A renamed second-generation A618. A heavy-duty A727 with overdrive and electrical control.Applications:
- 1996-2002 Dodge RamDodge RamThe Dodge Ram is a full-size pickup truck manufactured by the Chrysler Group LLC. As of late 2010, it has been sold under the Ram Trucks brand. Previously, Ram was part of the Dodge lineup of light trucks...
2500/3500 Diesel/V10
48RE
The 48RE is an electronically-governed, fourtim-speed heavy-duty overdrive automatic transmission, stronger than its predecessor, the 47-series.Gear ratios:
| 1 | 2 | 3 | 4 | R |
|---|---|---|---|---|
| 2.45 | 1.45 | 1.00 | 0.69 | 2.21 |
Applications:
- 2003-2004 Dodge RamDodge RamThe Dodge Ram is a full-size pickup truck manufactured by the Chrysler Group LLC. As of late 2010, it has been sold under the Ram Trucks brand. Previously, Ram was part of the Dodge lineup of light trucks...
2500/3500 ISB Diesel - 2003-2004 Dodge RamDodge RamThe Dodge Ram is a full-size pickup truck manufactured by the Chrysler Group LLC. As of late 2010, it has been sold under the Ram Trucks brand. Previously, Ram was part of the Dodge lineup of light trucks...
2500/3500 HO ISB Diesel - 2004-2007 Dodge RamDodge RamThe Dodge Ram is a full-size pickup truck manufactured by the Chrysler Group LLC. As of late 2010, it has been sold under the Ram Trucks brand. Previously, Ram was part of the Dodge lineup of light trucks...
2500/3500 600/610 Diesel - 2004-2006 Dodge Ram SRT-10
Front-wheel drive transaxles
The A404, A413, A470, and A670 are front wheel drive transaxleTransaxle
In the automotive field, a transaxle is a major mechanical component that combines the functionality of the transmission, the differential, and associated components of the driven axle into one integrated assembly....
derivatives of the A904 Torqueflite.
In the late 1970s, Chrysler designed the A404 TorqueFlite three-speed automatic transaxle for its front wheel drive Dodge Omni
Dodge Omni
The Dodge Omni and the similar Plymouth Horizon were front wheel drive cars introduced by the Dodge and Plymouth divisions of the Chrysler Corporation in North America in 1978, and were based on a European Simca-based design of the same name...
and Plymouth Horizon subcompact cars. This transaxle would be upgraded in the 1980s into the A413 and A670 units, which were progressively heavier-duty, for Chrysler's K-cars and their derivatives, including the minivans. The four-speed Ultradrive
Ultradrive
The Ultradrive is a 4-speed automatic transmission from Chrysler Corporation. It was produced starting in 1989. It was originally paired primarily with the Chrysler 3.3 engine in vehicles with transverse engines...
electronic four-speed automatic transaxle would eventually replace it, but the three-speed lasted for more than a decade after the 1989 debut of the four-speed unit.
A404
The light-duty A404 was used with the smallest straight-4Straight-4
The inline-four engine or straight-four engine is an internal combustion engine with all four cylinders mounted in a straight line, or plane along the crankcase. The single bank of cylinders may be oriented in either a vertical or an inclined plane with all the pistons driving a common crankshaft....
engines from Chrysler, commonly the 1.7 L Volkswagen
Volkswagen
Volkswagen is a German automobile manufacturer and is the original and biggest-selling marque of the Volkswagen Group, which now also owns the Audi, Bentley, Bugatti, Lamborghini, SEAT, and Škoda marques and the truck manufacturer Scania.Volkswagen means "people's car" in German, where it is...
unit.
A413 or 31TH
The A404 was strengthened to become the A413 (later 31TH) in 1981. This was used with Chrysler's 2.2 and 2.5 L K-car enginesChrysler K engine
The 2.2 and 2.5 are a family of inline-4 engines developed by Chrysler Corporation originally for the Chrysler K- and L-platforms cars and subsequently used in many other Chrysler vehicles...
. It was available both with and without a lockup torque converter
Torque converter
In modern usage, a torque converter is generally a type of hydrodynamic fluid coupling that is used to transfer rotating power from a prime mover, such as an internal combustion engine or electric motor, to a rotating driven load...
. This transmission was also used in the Dodge Neon
Dodge Neon
The Plymouth/Dodge Neon, sold in Europe, Mexico, Canada, and elsewhere outside the United States as the Chrysler Neon, is a compact front wheel drive car introduced in January 1994 for the 1995 model year by Chrysler Corporation's Dodge and Plymouth brands...
from 1995-2001. The A413 is broadly similar in concept to Ford's ATX
Ford ATX transmission
The FLC ATX was a 3-speed hydraulic automatic transaxle produced by Ford Motor Company from 1981 through 1994. Used in the company's four-cylinder-powered cars ranging from the Escort to the Taurus, the transaxle had a lockup torque converter, but no overdrive...
three-speed unit.
A415
The A415 was developed for the 1.6 L Simca 1100 engine, but was not released for series production.A470
The A470 was a strengthened version of the transaxle used with the 2.6 L Mitsubishi Astron engineMitsubishi Astron engine
The Mitsubishi Astron or 4G5 engine, is a series of straight-4 internal combustion engines first built by Mitsubishi Motors in 1972. Engine displacement ranged from 1.8 to 2.6 litres, making it one of the largest four-cylinder engines of its time....
in the K-cars
Chrysler K platform
The Chrysler Corporation's K-cars were compact-to-midsize cars designed to carry six adults on two bench seats and were aimed not only to replace Chrysler's nominally-compact F-body Aspen and Volaré, but also to compete with intermediates like the Chevrolet Malibu and Ford Fairmont...
from 1981-1985 and minivans from 1984 through 1987.
A670
The highest-specification three-speed transaxle was the A670. It was used with the 3.0 L Mitsubishi V6 engine in Chrysler's cars and minivans from 1987-2000.Gear ratios:
| 1 | 2 | 3 | R | Final |
|---|---|---|---|---|
| 2.69 | 1.55 | 1.00 | 2.10 | 3.02 |
See also=
- List of Chrysler transmissions
- AMC/Jeep Transmissions
- Pan Shapes and Naming