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please quick answer, 37 teeth and 9 teeth

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Old Jun 10, 2008 | 06:26 PM
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Default please quick answer, 37 teeth and 9 teeth

I just pulled the differential cover off my rearend. 9 teeth on the pinion 37 on the ring gear. What is my ratio? I did the math but do not see that being possible. I did not think that the aftermarket made that ratio for my axle. Please an answer before I put the cover back on.
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Old Jun 10, 2008 | 06:27 PM
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Math says 4.11:1
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Old Jun 10, 2008 | 06:45 PM
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That's what I come up with. But who makes a 4:11 for these cars? I found what I think might be a part # 3626 stamped on the ring gear and wrote in white marking pen with the backlash.
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Old Jun 10, 2008 | 06:59 PM
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I also found 7384-4K 9x37 stamped on the ring gear. I could barely make it out but it look like a trade symbol. mc? with a box around it.
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Old Jun 10, 2008 | 07:23 PM
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I think I figured it out, M G not M C MG= Motive Gear 9 teeth by 37 teeth is their 4:10. The math for some reason comes out to 4:11. I do not know why they call them a 4:10 though. I always wondered why everybody else complained that their M6 bogged out on the highway in 6th gear, mine always cruised along just fine.
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Old Jun 14, 2008 | 03:49 PM
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Motive definitely makes a 37/9 4.11 gearset. I am not sure who if anyone, makes a 4.10.
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