[Axle07]

last time i was under there the only tag i saw coming off the rear said limited slip differential. Gonna check tomorrow to see what i got though.

[OINK 1]

The one wheel on the ground idea will not work, the little spider gears inside the single track unit will also turn, multiplying the rear ratio, giving incorrect results.

Pontiac Gregg

[b-man]

Originally Posted by OINK 1

The one wheel on the ground idea will not work, the little spider gears inside the single track unit will also turn, multiplying the rear ratio, giving incorrect results.

Pontiac Gregg

There's no need to apologize for me Gregg, because you're the one who's mistaken here.

Example for 3.50 gears (a common Ford 9" ratio):

Leaving one tire on the ground (open non-posi rear) and turning the driveshaft 3-1/2 turns will always result in the tire that's off the ground making exactly 2 full revolutions. As already stated, this is because of the 2:1 ratio of the differential gears.

Of course the little spider gears are turning inside when using this method, but they don't skew the results one bit.

Maybe you should try this before coming on here to tell me I'm wrong.

As I already have stated, there is absolutely no need to remove the cover (or the entire gear carrier on a drop-out rear) to check the gear ratio.

b-man Bart