Quote:
Originally Posted by 1986c10
well my thinking is with like a block lift, the stock pinion angle is retained because the axle is not moved any direction but farther below the springs and is not tilted any direction, just lowered so the 3 degree range between output shaft and pinion angle would be kept true.
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Actually, just moving the axle down does change the pinion angle. It is pivoting around the output shaft of the fixed yoke (t-case or otherwise) on a long arc. The lower the axle goes the steeper or greater the angle. Think of the opposite. If you lift the axle to the same height (assuming diff is parallel) as the t-case, all the yokes would be in a straight line aka-zero offset. The further the axle moves down the more the pinion on the diff needs to be raised to maintain the same angle in relation to the t-case (or fixed pinion).