I can't explain the discrepancy in the method of turning the wheel and
comparing the axle rotations - but when you open up the back, and count the
teeth on the pinion gear and ring gear, you will get something like pinion =
11, ring = 39. Ring/pinion = 39/11 = 3.545 or 3.55. or 39/10 = 3.90.
Jack / Winter Park FL
-----Original Message-----
From: ROGER GLEASON <rogerg@maverick.facil.uconn.edu>
To: oletrucks@autox.team.net <oletrucks@autox.team.net>
Date: Tuesday, February 16, 1999 12:04 PM
Subject: [oletrucks] Trucks:Rear End Ratios
>I saw a thread a while back about how to determine rear gear ratios
>without having to pull off the cover...Is there a way.? I looked
>thru the archives but could not find the article...When I spin the
>pinion one complete 360* revolution the axle turns 4/5ths of one
>revolution.
>If I pull the cover i could count the teeth on both the ring and the
>pinion then what?
>If I divide the ring by the pinion i am gonna get 1.08? something...
>if I divide the pinion by the ring i will get .08? something.
>DUH ! I can't believe I forgot how to do this...
>I can't believe I can spin the pinion one turn and get 4/5 of a turn
>from the axle shaft.
>Rogerg
>51-3100 AD Stocker
>oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
>
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