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Author Topic:   9 inch swap
RangeRover
Dirt Full Roller

Total posts: 37
posted February 07, 2001 09:00 PM
Can someone help with the details on swapping out the stock GM 10 bolt with a 9 inch on a Chevelle or like chassis. The factory upper links now bolt onto the cast "ears" on top of the GM housing. Do I need to fabricate and weld similar mounts on the Ford housing? Is it worth it?

Rooster
Dirt Forum Racer

Total posts: 90
posted February 07, 2001 10:01 PM
YES, and YES.

skawldeddawg
Dirt Roller

Total posts: 9
posted February 07, 2001 10:30 PM
Rooster is right both times.I'm just about to do the same thing to my SS.One buddy of mine welds small end sections of trailing arms on top and another buddy did some cool stuff with one single turnbuckle,while i would feel more comfortable with two,but that buddy has been the NWRS national champ,so i'm sure he knows more about it than me.

MOD RACER#93
Dirt Freak

Total posts: 251
posted February 08, 2001 07:19 PM
I have done this on a street racer chevelle and a street stock cutlass. Take and cut the lower link brackets off the stock 10 bolt, to use on the 9inch. On the street car I did like skawlded said take an old lower trailing arm and cut it off on the angle to weld to the top of the rear. On my street stock, I took thick flat plate's and fitted them to the top housing. Then got the poly bushings and carried the plates to a machine shop and had them turn out the center to press the poly bushings into. Both ways works good. By now you might even be able to buy brackets for the top of 9inch rear's in stock 4link susp. It is definately worth the time and effort to make the swap......

snapper
Dirt Roller

Total posts: 17
posted February 10, 2001 08:33 PM
Do the top arms have to be at a certain angle? If so, what is the best angle to be at? How do you decide if they are binding or not?

owracer
Dirt Maniac

Total posts: 103
posted February 11, 2001 06:34 PM
A ten degree angle down to the front on the upper links and the lower links parallel to the ground.

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