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Old 10-21-2009, 07:08 PM   #2
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Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,960
Re: Whats my gear ratio in this gm 12 bolt???

normally you just divide the ring gear teeth by the pinion teeth which in your case comes out to 3.30 but i have never ever hears of that ratio in a 12 bolt. a recount might be in order. also there should be a stamp on the edge of the ring gear that will say the tooth count. the most common gear would be 3.07 which comes to 40-13
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Last edited by cableguy0; 10-21-2009 at 07:09 PM.
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