The rearend in my '83 Malibu Wagon is on it's last legs. I know that other G-Body rears will fit but there again I run into the same problem. Gearing and finding the things. It has a fairly stout 350. Not racetrack stout just a good strong running engine. This is a family hauler after all. I am currently shopping around for an F-Body steering box to swap in and was wondering about the rear. Will that fit as well? We all know GM was notorious, or brilliant, for using the same parts across a wide array of cars and trucks. If I can pick up a rear from the F-Body, should I do so? Would it fit without a whole lot of fab? If I have to tear it apart to make it fit I would be able to afford to have the one currently in the car done. This thing is getting done nice and slow. Piece here and pieces there. Plan is to eventually find a 200-4R so I want the gearing in the mid 3s. I can handle the 350 as it's just a town car for now but I want to get it to the point that I can drive it from Louisville, KY back home to NC to see my family It just rides and is so much easier on my back than the Wife's Liberty. After I get it running/driving correctly, I plan to snag a single belt system off of something newer and put the A/C back on. I know this is long winded but I believe you guys need to know everything that I have planned down the road so I can get the best advise. Thanks.
First thing is to determine exactly which rearend you have. In most instances wagons got bigger rears than their sedan cousins.If an F-body rear fit measurement-wise, you'd still have the issue of the F-body rears not having the bushing tabs to locate the upper rear trailing arms.
http://www.bilbreyracing.com/These guys will do you right. I have been dealing with them for 6 years and have no complaints.
AND, if you really want a 200-4r, I have one that I'm getting ready to replace. It is in a running car and it functions as designed. I would suggest having it rebuilt as it has some milage on it. The reason I'm replacing it is because I plan to put more in front of it and found a rebuilt GN 200-4r for less than the parts inside it.A Grand National rear end would also be a solution to your problem but those cars & parts are difficult to find in our market...40272. There is a great junkyard off National Turnpike and another one across the tracks from it off of Grade Lane, they may have the parts you are looking for, a stroll through their yards could be worth the time/effort.Here's a link to the best junkyard I've ever been in. You can search their list of currrent inventory and they have a car locater to search their nationwide inventory.http://www.pullapart.com/
Thanks man but I am very familiar with Pull-A-Part. After all my sister-in-law works there. Had a great line on a 200 and rear out of an '86 Camino with 51K on it at ISA over on Grade. Just had to use the money for that to fix the waterpump on the wife's Jeep.
My 78 Regal had an open-diff 2.73 7.5 rear in it. The 8.5 GN rear I found on Craigslist for $400 bolted right up. I used a Hotchkis upper/lower trailing arm kit with it. It'll handle everything my 406 Chevy engine can throw at it.
if you get a gen 4 [8.5]you could adapt to the 3 link design the camaro uses....good luck