9" Rearend

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Nov 30, 2004 | 08:01 PM

scalezy3b811

Thread Starter

Junior User

Joined: Oct 2004

Posts: 53

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From: Pearland, Texas

9" Rearend

How would I go about putting a 9" on my '91 F150? How involved is that?

Dec 1, 2004 | 08:27 AM

RTM

Cargo Master

Joined: Dec 2003

Posts: 2,735

Likes: 38

From: Sunny Florida

If you had a 92, I think then you would have an issue with your electronic speedo. But you have a 91 so it will be a direct bolt in. Not sure about the drive shaft length. The 9 inch rear can be had with several different u-joint flanges which affect the u-joint size and the drive shaft length.

I have never done the swap but I know thw 9 inch axle bolts in place. Ford trucks could be had with either the 8.8 and the 9 inch for a few years until the 9 inch was completely done away with.

Dec 1, 2004 | 08:31 AM

1982fordf100

Elder User

Joined: Sep 2003

Posts: 926

Likes: 3

From: SE, Michigan

Just wondering, why do you want a 9" in there? Your 91 F150 should have the 8.8 already in there which can be as strong as a 9" if you build it up.

Dec 1, 2004 | 03:06 PM