Front Differential gear ratio I.D.help please

[4boltmainiac]

83 scottsdale K10 with a ten bolt front and 12 bolt rear. Changin gasket so I will pull pumkin covers off. Think I have 3.73 but would like to confirm. Thanks 4bolt

[DmaxMaverick]

It could be a 3.73. Maybe not.

You'll have to count the R&P teeth (divide the R by the P), or turn the shaft and count the rotations for one axle rotation (or vice versa). Only a little simple math is required. There's no other sure way of knowing.

[HH]

There might be a tag on the axle cover with the gear ratio assuming it has not been changed.

If you turn the tire and count the revolutions of the tire and driveshaft make sure only one tire spins, if you do not have a locker.

[87max]

will be stamped in the ring gear on the edge, be like 41-10 for 41 teeth ring gear & 10 for pinion then divide, that would be 4.10's. Or 41-11 for 3.73's

[thesun]

if you ever want to learn more about diesel's and want to work on mine, please let me know! Not rich but would be willing to pay to make it worth someone's while: I llive in NCal too and have a doozy of a van carrying a 6.2L engine.

[AJMBLAZER]

Surest ways are to pull the cover, drain the oil, and count the teeth on the ring and pinion and do the math along with looking for the stamped numbers.