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I have a 79 camaro with a peg legged 3.08 rear 8.5 10 bolt. My question is,what posi unit should I get, and are they a real pain in the a.... to put in?I'm not a rear end guy, so any help would be appreicated. Thanks. :thumbup:
 

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Whatever you do, don't use a GM Gov-Lock unit. You want a cone- or plate-style-clutch unit. If you find one marked 410408N, that's a good one (3rd series, used with 2.73 & higher ratios, including 3.08). 410409N is for highway gears.

Here's a Gov-Lock, the one to avoid:



The good ones will have either a flat, S-shaped spring in between the side gears, or 4 or 5 horizontal coil springs.
 
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