I have a sand rail that I am running a 3.0L chrysler motor from a 90 town & country now mated to the vw trans tha vw trans is worn out my question is what chrysler auto transaxel will fit this motor that does not need a control moduel to shift I have been told there is a hydrolic shift trans but cant find out which trans this is and what car has this trans please help
chrysler auto transaxel on 1990 Chrysler Town & Country
by Visitor in Prudenville, MI on May 02, 2010
ANSWER by Visitor , January 01, 2011
The simple 3 speed hydraulic trans for transverse engines was the A404 or A413. A generic designator is "31TH", meaning 3-speed, Hydraulic, Transverse (forgot "1" meaning). Not sure which was in 1990. My 1996 Voyager 2.4L has the A413 (Gen II minivan). I know the A404 was in the 1980's K-cars (Aries, etc) which the early Gen I minivans were based on. I think the differences are minor. Both are direct descendants of the rear-wheel drive A904 used in Darts, Valiants, Aspens, Volares, trucks, and many AMC cars. The A904 and the even bigger A727 are considered the most rugged, simple auto transmissions ever in the U.S.. Smart to avoid the later electronic 4-speeds like A604 since besides complexity, early ones had failures due to controls and fluid problems. See www.wittrans.com for internal details. You must get one from a V-6, since 4 cylinders had a different bolt pattern. I think all V-6 bell-housings are the same, but verify (look at PN's on www.rockauto.com). 4-speeds are simple to spot since they have a big electronic box on front. If you remove an A404/A413 from a junkyard car, be sure to remove the "hidden" speedometer sensor on the passenger's side output, and you need a trans jack to swing it around the engine cradle mounts, though it is light enough to man-handle out. It is quite difficult to remove, as are all FWD cars, especially if V-6.