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Whats up guys i need a little help i Have a 1988 and need to know what my axle is. My axle tag reads... (s817p first line) (3L55 88 7k26 Second Line) also need to know what spline it is any help is greatly apperciated thanks.:banghead
 

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How about filling in your Bronco info so we can help you better. The Second line means 3.55 ratio limted slip (trac-Loc). If it was in a Bronco it should be 31 spline. You will have a 8.8" or 9" rear. If it has an inspection plate on the rear of the housing its a 8.8". If the whole third member comes out through the front then its a 9". Search the site here or post a pic to be sure.

And Welcome to FSB!
 
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