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post #1 of (permalink) Old 08-26-2002, 08:44 AM Thread Starter
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gear ratio question

I read on a post recently,that if you lifted the rear of your truck, spin one tire one full rotation,and counted the number of revolutions that the drive shaft made, that I would be able to tell (approx.) what gears I I did..I spin the tire around once, and the drive shaft goes around ALMOST two times...whats that?? like 1.8-1...maybe i missed something here..i've never heard of gears that high. 78 short bed/350/th350/np203converted/12bolt.
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post #2 of (permalink) Old 08-26-2002, 10:34 AM
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Re: gear ratio question

well, if you have an open diff in the rear you have to double it, so. 1.8*2=3.6, so its probably 3.73 gears, which is good all around ratio.
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post #3 of (permalink) Old 08-27-2002, 01:23 PM
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Re: gear ratio question

When I was changing my tires, I did this, and one tire spun forwards, but the other spun the opposite direction!! What does this mean and why does it happen?
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post #4 of (permalink) Old 08-27-2002, 01:50 PM
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Re: gear ratio question

Uh, thats what an open differential does. Even if you have a limited slip i think it will do that. The point of a differential is to allow the wheels to spin at different speeds (ex: around corners).
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