Rear Dif
Thread Starter
Member
Joined: Feb 2013
Posts: 72
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From: Illinois
Rear Dif
Hello all, I have a quick question I have 4x4 with 3.55 ls in the rear, if I were to get a 9.75 trutrac would I have to purchase a certain one for the gear ratio or is it just the one fits all? Thank you for your time!
Senior Member
Joined: Feb 2014
Posts: 1,164
Likes: 161
From: Ardmore Alberta
Ford doesn't have a cut off for the carrier based on ratio like some diffs do. All you need is a 34 spline axle 9.75" Ford Trutrac and you are set! It's part number 913A477 for a Detroit TruTrac.
Last edited by 1994Vmax; Jan 6, 2015 at 01:27 PM.