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Author Topic:   Changing 7.5 Rear End to 8.5?
busch17
Member
posted January 25, 2001 11:47 PM
I have a 85 Monte Carlo that I'm building and I'm taking out the 7.5 rear end and putting in a 8.5 from a 1977 Monte. What do I all need to change to make this fit? Please help. Thanks!!!!!!


BK19
Member
posted January 26, 2001 05:58 AM
you need to shorten the upper mounts and make new shock brackets. but my local chassis builder has a jig he puts it in he uses the old mounts off the metric rearend welds them on the 8.5 rearend and uses DOM tubing for the upper mounts he charged $75.00 dollars i would check your local builders to see if they do that i hope that helped a little


Pit Bull
Member
posted January 26, 2001 09:06 AM
Hey Junbug I can't use the Ford 9". My rules state GM parts in GM cars. So I can't use the Ford 9"


Pit Bull
Member
posted February 23, 2001 06:44 PM
the bottom arms should fit and the tops just drill a hole 7/8 in in front of center of the old one should slide right in


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