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Old 12-21-2018, 06:50 PM   #2
lowrollin70gmc
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Join Date: Mar 2004
Location: Fargo, ND land of the flat hills
Posts: 1,147
Re: Finding rear gearing, confused.

If you only spin one drum at a time while the other is stationary then you must turn that drum twice to count the revolutions of the yoke. This is because of the nature of the spider gear’s differential action.

Therefore, I would guess you’ll find you have 4.10s when spinning one drum twice.
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