67Rocket

A 70 olds cutlass open rear with 42 teeth on the ring gear would be what ratio? Thanks

Qwik71442

42/13 3.23??

Fun71

If you have it open to count the ring gear teeth, it is very easy to turn the gear to see the numbers stamped in the edge of the ring gear. That will have the number of teeth on the ring gear and the pinion gear. Divide the two numbers for the ratio.

joe_padavano

Or, count the teeth on the pinion and do the math.

67Rocket

That's what I thought, just wanted to check with the pros. Thanks

monzaz

3.23 should be 42 RING.... everything else is 41 or 40 or 39 etc. from the factory