eh diif centre conversion

retro · Post by **retro** » Tue Nov 04, 2008 10:46 pm

i want to run a better diff with my grey motor, i have an eh diff, and want to know whats required to fit it in..ie uni set up, tail shaft etc.

FB MAD · Post by **FB MAD** » Tue Nov 04, 2008 11:11 pm

If you are only changing the diff centre to an EH one and not the complete drum to drum EH assembly then do this:-

Knock out rear grey motor uni joint and fit a red motor uni joint.Use red motor uni joint "U" bolts and nuts.

Pull out axles and the grey motor diff centre and fit EH centre ( will bolt straight in ) and refit axles.

Refill with diff oil and drive away, it's that simple.

What diff ratio is the EH one??..... 3.55 or 3.36 ??

strogger · Post by **strogger** » Thu Nov 06, 2008 8:32 pm

I dont know if EH's had the 2 different splined axle types, but you need COURSE splines..

A.

FB MAD · Post by **FB MAD** » Thu Nov 06, 2008 11:32 pm

They only had the course splines in original EH centres.

Holden changed to fine splines around the HX Holden ?? or thereabouts.

dave68 · Post by **dave68** » Fri Nov 07, 2008 8:12 am

Terry U R a font of knowledge.