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Old 10-06-2011, 11:07 PM
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1stgenbird 1stgenbird is offline
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Join Date: Jul 2005
Location: Derry, NH
Posts: 708
Default Rear Differential Question

I admit that I don't know a lot about the rear diffs, but I hear the term "4 pinion rear end". What does that mean, how does it differ from a 3 pinion?
I have a spare 67 rear end with two radius rods and I read that if there are two rrs, then it's a 4 pinion rear.
I'm not sure whether it's a posi or not. The axle is somewhat rusty and I can't see the code.