do eaton 12 bolt and 8.5 rears share spider gears?

Rookie Poster
Posts: 10
Joined: Mon Jul 03, 2006 9:58 am
Location: Dysart, Iowa

do eaton 12 bolt and 8.5 rears share spider gears?

Postby tlowe » Thu Jul 27, 2006 10:35 am

looking at rebuilding a 12 bolt eaton. i am having a hard time finding parts for the internals. does the eaton 8.5 share the same internals? thanks tom
1965 elcamino. inline six fuel injected/ turboed. fun to drive.


spider gears

Postby monzaz » Wed Nov 22, 2006 2:02 am

Hi Tom, aftermarket maybe... but not factory. all factory 8.5 410409 and 410408 are trac lok type posi units and have totally different clutch paks and spider gears.

Eaton well now I will have to try them and get back to you.

Areas of consern. pinion shaft diameter???

Side gears might be the same but the small spider gears??? I do not know. I will check over the holidays to see. GOOD question. Like them cause I get to learn new things also.c Jim.

Return to “12 Bolt Differential Questions”

Who is online

Users browsing this forum: No registered users and 1 guest