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**cooljess76** · 12-02-2009, 06:50 AM

Small case diffs are good for around 150hp. Anything over that you really should consider a medium case diff. As for weight, I happen to have a few diffs sitting in my garage and would be happy to weigh them for you tomorrow. You have to consider halfshaft weights though. Medium case diffs will use shorter/beefier halfshafts than small case diffs. I know it's obvious, but a heavier diff will more than likely be stronger. The weight isn't really a problem since it's supported by the chassis and has a low center of gravity. For off-road rally style driving, you'll want weight on the rear axle anyway. If you have the cash, I'd highly recommend a Quaife diff. They're a little expensive, but it'll probably be the last diff you'll ever buy for the car, provided you practice good maintenance and change the fluid regularly.

12-02-2009, 06:50 AM	#2
cooljess76 NOBODY F's with the Jesus Join Date: Oct 2006 Location: Ventura California Posts: 7,824 iTrader: (6) Photo Gallery	Small case diffs are good for around 150hp. Anything over that you really should consider a medium case diff. As for weight, I happen to have a few diffs sitting in my garage and would be happy to weigh them for you tomorrow. You have to consider halfshaft weights though. Medium case diffs will use shorter/beefier halfshafts than small case diffs. I know it's obvious, but a heavier diff will more than likely be stronger. The weight isn't really a problem since it's supported by the chassis and has a low center of gravity. For off-road rally style driving, you'll want weight on the rear axle anyway. If you have the cash, I'd highly recommend a Quaife diff. They're a little expensive, but it'll probably be the last diff you'll ever buy for the car, provided you practice good maintenance and change the fluid regularly. Last edited by cooljess76; 12-02-2009 at 06:57 AM.