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Old 01-18-2011, 12:48 AM   #26
Captainfab
60-66 Nut

 
Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,252
Re: Axle code

If you do have a '63 or '64 12 bolt rear end, you will have to change the side spider gears from the 17 spline to the 30 spline to accomodate the aftermarket axles.

The full size van rear ends are wider than the pickup rear ends. So it will be wider than 63 1/2". I don't remember if the '71 Van will have a truck 12 bolt or a passenger car 12 bolt like the early vans did. The Vans changed right around '71-'72 I believe.
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