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Author Topic:   gears
racerdave99
Member
posted February 04, 2003 03:04 PM
in a rearend how do you count the gears to tell what ratio you are dealing with?

thanks Dave

66jj
Member
posted February 04, 2003 03:39 PM
mark one and count all the teeth on the ring gear, and pinion gear, then divide the pinion by the ring....

ring is big round one.

c21
Member
posted February 04, 2003 04:13 PM
Mark - and count the ring gear teeth......then mark - and count the pinion gear teeth.

Divide the ring number by the pinion number.

For instance:

39 teeth - ring. 10 teeth - pinion

Therefore 39/10 = 3.90 (390 gears)



Jimhobby02
Member
posted February 08, 2003 07:57 AM
My only experience is with GM 7.5 rearends. Just clean the ring gear up and rotate until you see the factory markings. They will tell you the ratio.


racer17j
Member
posted February 08, 2003 01:00 PM
they do have them marked but double check it i just was selling a set marked 2.73 turned out when we counted they came out to be a 3.23


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