How to determine rear end gears??

[358stroker]

I have my diff cover off and I seem to remember there is a way to count your teeth on your gears and do some sort of calculation to determine what gears you have.

Does this ring a bell with anyone?

 

[rockyracoon]

just count the teeth on the ring and then on the pinion and divide the pinion into the ring. I think mine had 11 on the pinion and 41 on the ring= 3.727.

 

[Roland69]

or jack the rearend up mark the drive shaft and the tire and spin the tire once and count the rotations of the drive shaft. if it turns just over 3 1/2 it 3:55's or if it turns 3 3/4 it 3:73's or if it turns just over 4 times it 4:10's and so on and so on