GM 325-4LTHM transmission

325-4L

Used 1982-85 in Buick Riviera, Olds Toronado and Cadillac Eldorado.

This was an hydraulically controlled front wheel drive overdrive transmission with an electronically controlled lock-up torque converter .

Top cooler line is the cooler return line.

Band adjustments:
Intermediate = not adjustable
Reverse = not used

Gear Ratios:
2.74:1 1st gear
1.57:1 2nd gear
1.00:1 3rd gear
0.70:1 4th gear
2.07:1 reverse

Transmission

(click on picture to enlarge)

Pan gasket

(click on picture to enlarge)

Click to see parts I have listed for the 325-4L