Thread: Gear Ratio

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Originally Posted by 1972chevy

What would be best for the diff a Limited Slip or a Posi Trac. I’m not planning on racing it but still would like to race it on occasions.

Thanks for all of your help with this i appricate it.

Limited Slip and PosiTrac are just two names for the same thing, a clutch pack type carrier to bias the load to the wheel with the best traction http://en.wikipedia.org/wiki/Limited-slip_differential. They are subject to clutch wear over time, and require the addition of a friction additive to the differential. To improve upon that you might consider an Eaton/Detroit TrueTrac, which is a spiral gear locker that is pretty much bullet proof, IMO - Performance Products | Detroit Truetrac Differentials They launch straight & true, no side slip at all, and require no special additives.