4L30E transmission

4L30E

Used 1990-up.

There are MANY versions and are used in the Cadillac Catera as well many Foreign vehicles and Postal trucks.

This is a computer controlled overdrive transmission.

Rear cooler line is the cooler return line.

Band adjustments:
Intermediate = not used
Reverse = 5 turns

Gear Ratios:
2.40:1 1st gear
1.479:1 2nd gear
1.00:1 3rd gear
0.723:1 4th gear
2.00:1 reverse

Optional Gear Ratios:
2.86:1 1st gear
1.62:1 2nd gear
1.00:1 3rd gear
0.723:1 4th gear
2.00:1 reverse

Transmission

(click on picture to enlarge)

Pans and gaskets

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