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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.
1975–1978 Chrysler A390 — 3-speed manual, all-synchromesh [4] 1976–1980 Chrysler A833 — 4-speed manual overdrive (NPG) [5] 1981–1986 Chrysler A460 — 4-speed manual transaxle; 1983–1984 Chrysler A465 — 5-speed manual transaxle; 1984–1990 Chrysler A525 — 5-speed manual transaxle; 1987–1989 Chrysler A520 — 5-speed manual ...
Chrysler was the last of Detroit's Big Three automakers to introduce a fully automatic transmission, some 14 years after General Motors had introduced Oldsmobile's Hydramatic automatic transmission and nearly three years after Ford's Ford-O-Matic. Packard's Ultramatic debuted in 1949, and Studebaker's Automatic Drive was introduced in 1950.
This design allows the vehicle to be driven (in “limp-in” mode) in the event of an electronic control system failure, or a situation that the Transmission Control Module (TCM) recognizes as potentially damaging to the transmission. On the 68RFE, fourth gear is used for limp-in instead of second and third. All RFE transmissions use Mopar ATF +4.
The TH400 was phased out for the 1980 models, when the A-727 replaced the TH-400 as the only automatic transmission option for both the SJ Wagoneer/Cherokee wagons and the J-10/J-20 trucks. Internally similar to the Chrysler A-727, the case was one-piece, cast with an AMC pattern bellhousing (not interchangeable with a Chrysler pattern A-727).
The Ultradrive is an automatic transmission manufactured by Chrysler beginning in the 1989 model year.. Initially produced in a single four-speed variant paired with the Mitsubishi (6G72) 3.0-liter engine in vehicles with transverse engines, application was expanded to the Chrysler 3.3- and 3.8-liter V6 engines in 1990 model year Dodge Caravan/Grand Caravan, Plymouth Voyager/Grand Voyager ...
The intake manifold, reverse-rotation turbocharger, jet oil coolers, oil pump, manual transmission, pcm tuning, intercooler size, and weight are the only differences between those cars. The SRT-4 has a cast-aluminum 8-row Valeo intercooler mounted in the front, and the reverse-rotation Mitsubishi TD04LR-16Gk turbocharger has a 6 cm 2 (1 sq in ...
The gerotor-type oil pump was located at the bottom-rear of the engine, and provided oil to both the crankshaft main bearings and the cylinder heads (via the lifters and pushrods, as opposed to a bored passage on LA engines). Chrysler's engineers also redesigned the oil seals on the crankshaft to improve anti-leak seal performance.