7.5 or 8.5???

[sparkysgarage]

Anyone know how to tell an 8.5 G body rearend from a 7.5 without removing the rearend cover??? I have 2 G-body posi's and i don't know how to identify them. Thanks for all the help!!!!!!

 

[Phoenyx]

I believe 7.5s have the fangs and the 8.5s dont.

 

[Furtrader]

This will help:
http://tech.oldsgmail.com/axle_ident.php

 

[broke1]

8.5 has ears on the bottom,7.5 does not.....If its out of a G Body,the only cars that have them are 86-87 442's,84-87 turbo Regals,and some 84-87 station wagons although the wagons have different shock mount locations...

 

[Blake442]

8.5 has ears on the bottom,7.5 does not.....If its out of a G Body,the only cars that have them are 86-87 442's,84-87 turbo Regals,and some 84-87 station wagons although the wagons have different shock mount locations...

That's only partially true.

8.5" rears came only in the following G-bodies:
'84 Hurst/Olds (NOT '83)
'85-'87 442's
'84-'87 Turbo Buicks

That's all.

'84-'87 station wagons don't exist, since production of G-body wagons ceased in '83. The '78-'83 wagon rears are the same as any other G-body.

 

[broke1]

84 Hurst Olds doesnt have an 8.5 and im pretty sure the 85 doesnt either....

 

[jade81olds]

84 Hurst Olds doesnt have an 8.5 and im pretty sure the 85 doesnt either....

Hmmmmm. . .really. pretty smart fella. best be checkin' yer sources.

 

[broke1]

Brian [email protected] can tell you I am right.....

 

[Blake442]

84 Hurst Olds doesnt have an 8.5 and im pretty sure the 85 doesnt either....

You and that other guy are wrong.

Both the '84 H/O and the '85 442 have the 8.5 axle.

 

[85_SS]

You and that other guy are wrong.

Both the '84 H/O and the '85 442 have the 8.5 axle.

Agreed 8)