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And I thought the control arm mounting points were the same for the 7.5 and 8.8 [Archive] - StangBangerz Forums
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Black92LX
05-11-2012, 09:57 PM
Considering pretty much every control arm you buy states it fits 79-98 (ALL) and that the late 70's early 80's had the 7.5 and mid 80's to 98 had the 8.8 I figured the mounting points would be the same. Apparently that is not the case as I found out tonight as the mounting point on the rear end is way off.
I tried moving the rear all around jacking up one side, jacking the middle and could never get them to work.
http://img.photobucket.com/albums/v432/Black92LX/Cars/Project%20Black/482fa29f.jpg

Was my assumption wrong that they are the same? Or am I just doing something wrong with the install??
Rick93coupe
05-11-2012, 10:39 PM
They are the same, I pulled a 7.5 and put a new 8.8 under mine with new controls arms. It's just a pain in the ass. I would put them on the housing first, then you can flex the rubber upper bushing of the housing and then mount it in the car.
Black92LX
05-11-2012, 11:15 PM
They are the same, I pulled a 7.5 and put a new 8.8 under mine with new controls arms. It's just a pain in the ass. I would put them on the housing first, then you can flex the rubber upper bushing of the housing and then mount it in the car.

I figured as much. It's just a pain moving the rear around by yourself and trying to position the arm all at the same time.

I found an 8.8 with posi and 3.73s locally, so I am picking it up Sunday. Planned on just waiting until the 7.5 went kaboom, but I figure I will have pretty much everything off anyway, what's the point of doing it again?
Plus I will have a posi unit and better gearing. Pretty good price to.
MFIELD
05-11-2012, 11:15 PM
Rotate the rear end upwards. Like stated above its easier to mount on axle first.
Rick93coupe
05-11-2012, 11:40 PM
I figured as much. It's just a pain moving the rear around by yourself and trying to position the arm all at the same time.


Yeah I always hate monkeying with a rearend by myself. Then again, sometimes having a friend help is counter productive too because both of you think you know which way it "needs" to go. :lol: Good luck with it.
Carl
05-11-2012, 11:47 PM
Yeah, it's a huge PITA. I wrestled with my swap for about a day, and clean up that cancer under there before you bolt the new rear in it!
Buckeye
05-12-2012, 12:01 AM
Beer is cheap brib your friends to help!
Black92LX
05-12-2012, 02:27 PM
Yeah, it's a huge PITA. I wrestled with my swap for about a day, and clean up that cancer under there before you bolt the new rear in it!

I was looking at that while I was under there.
Figured pull the whole rear end and clean up the rust then coat it for protection.

Picking up an 8.8 with 3.73s and posi tomorrow.