how can I tell if my rearend is posi in my 84 z28 - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board -- Hot Rod Forum

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Old 03-08-2012, 04:28 PM
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To figure out what ratio you have, put one wheel on the ground, spin the other one TWO revolutions, and count the revolutions of the driveline. Since there is a 2 to 1 reduction in the spider gears, the number of revs that the driveshaft spins to 2 revolutions of the tire, will be your gear ratio.

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Old 03-08-2012, 04:34 PM
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well, i guess that settels can we see a pic of the hotrod?
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Old 03-08-2012, 05:35 PM
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I would just pull the rear cover and look. You could probably use some fresh oil anyway.
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