31 Spline 5 lug Axels/ Eaton Posi

bln92cpe

New Member
Dec 15, 2003
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Los Angeles, CA
Hey guys, I just bought 31 Spline 5 lug rear axels and an Eaton Posi..My mechanic said I would break my rear axels if I didn't upgrade them due to the amount of power I am pushing..Anyone use this set up or have experience with this..Will it affect drivability on the street. I got both for $557...Thanks for any input..Matt Ca.
 
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Eaton is a very reputable differential maker. I have heard good things about them and their reliabilty. The auburn I have heard mixed reviews about longevity though.

As for the 31 spline axles, it all depends on your setup. Seeing as you have a s/c in the list I take it that you are serious with the power. If you are pushing 400+ hp at the rear wheels OR close to it and drive it aggressivley, then the torque monster the 5.0 is will have it's say if you stuck with the 28 spline long-term.