Angry Earl

iTrader: (19)

Hi, searched extensively already.

Just wondering if there's a way to see what gear ratio a diff has? I have a couple of FD rear diffs laying around, and can't tell if they're from a Manual (4.10) or AT (3.90).

Thanks in advance.

MattGold

iTrader: (108)

Count 'em.

You'll just have to pop the cover off and count the number of teeth on the ring / pinion.


...oh, and don't forget to drain it first.

K-Tune

iTrader: (26)

AT pinion flanges dont have counterweights, MTs do. If they have been changed out to fit the required driveshaft then nevermind...

silverTRD

iTrader: (37)

you can jack up the rear of the car, put it in neutral and turn 1 wheel. Count the revolutions of the wheel and the driveshaft. It helps to mark the shaft. And there you go...