what size ring and pinion do i need?

[RedlinedSSR]

i want to put 4.56 gears in and dont know what specs i need to order with.

[MnMsToy]

Originally Posted by RedlinedSSR

i want to put 4.56 gears in and dont know what specs i need to order with.

Watch this youtube video:

YouTube - Rear Differential Gear Swap on Ford F-150

YouTube - Rear Differential Gear Swap on Ford F-150

[Cash]

The 6sp has a 14 Bolt Eaton
The Automatic has a 10 Bolt Torsen
I installed Yukon 4.56’s in mine
6sp is a 9.5" 14 bolt - Part # GM9.5.456 (1.876" diameter 30 spline pinion)


The automatic I am not so confident in part #’s
8.5" 10 bolt (1.626" diameter 30 spline pinion)
I have a Summit catalogue and the part # varies with the brand name.
Motive - MGR 885456
Summit - SUM 741005
Richmond - RMG 6901671

[slicks2003]

If you have a 10 bolt, this is what I installed, worked out great..
Strange Engineering RS01-885456 - Strange Pro Street Ring and Pinion Sets - Overview - SummitRacing.com

[xoxoxoBruce]

Will not work with factory ABS reluctor ring.

Did you have a problem with your ABS?