GM 425 THM transmission

425 THM

Used 1966-78. Was used in Olds Toronado and Cadillac Eldorado. Also used in 1973-78 GMC Motorhome.

This was an hydraulically controlled front wheel drive three speed transmission.

Cooler line farthest from torque converter is the cooler return line.

Band adjustments:
Intermediate = not adjustable
Reverse = not adjustable

Transmission

(click on picture to enlarge)

Pan gasket

(click on picture to enlarge)

Parts listed on eBay for this transmission

Home