Just guessing, is it strength? I just want a good clean street launch, so would my 10 bolt 3.56 with a posi carrier give me that? TH350 tranny and a strong 355 to deliver the RPM's back to the rear.

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jmhardin@yahoo.com
1967 Chevelle Malibu
1965 SS Convertable - rough
The 67 Beast before restore (http://groups.msn.com/Restoringmy1967chevelle)
Parts needed/wanted (http://groups.msn.com/Restoringmy1967chevelle/partswanted.msnw)
Team Member 1756

Generally speaking, yes you should be just fine with your setup. But, keep this in mind, if you hit ANYTHING enough times, or use a big enough hammer, it will eventually break. A healthy BB is equal to a bigger hammer.

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Tom Parsons

Not an expert, but the usual reason for going to the larger rear-end (or a Ford 9") is twofold. A diff with a larger diameter ring gear by default is going to have a larger diameter pinion gear regardless of ratio. When you get into the lower ratios (4's, 5's) the pinion gets smaller - less strength. You usually can't get gears in the high 4's or even 5's in the 10 bolt because of this. Second, the rest of the assembly is physically larger - stronger. Bigger bearings, axle shafts, etc.

A properly set up 8.2 will do everything most "normal" folks can throw at it. 250 shot NOS, turbo/blower need not apply...

Wow, an 8 year old thread!