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-   70-72 GTO Tempest & LeMans TECH (https://forums.maxperformanceinc.com/forums/forumdisplay.php?f=436)
-   -   rearend info?? (https://forums.maxperformanceinc.com/forums/showthread.php?t=430467)

Jon's70GOAT 06-09-2002 05:15 PM

how to tell the difference between 8.5 and 8.2 rearend???

Jon's70GOAT 06-09-2002 05:15 PM

how to tell the difference between 8.5 and 8.2 rearend???

'ol Pinion head 06-12-2002 01:21 PM

8.5 has straps & 7/16" headed bolts on pinion yoke to hold driveshaft in.

OEM 8.2 GTO 10 bolt uses U-bolts & nuts. '68-72 GTO T400 driveshaft will measure 55 3/8" center to center on the u-joints. In Turbo 400 short tailshaft '68-72 GTO & '71-72 bigoutput shaft Muncie, when 8.5 A-body 10 bolt rear is swapped in, oem driveshaft must be cut down to 54"-54 1/8" center to center. I stock & sell both...some folks want one with new R/E. ;)

Eyeballing things...There are actually 3 different bolt in axle 8.5 A-body housings that will fit in a pre '72 A-body, & 5 different 8.5 corporate rear covers, identifying by either is not always the wisest.

[ June 12, 2002, 01:23 PM: Message edited by: ol' Pinion head ]


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