Wonder if the ''high strenght'' 30 spline rear axle from Doctor diff are any better than the one on my 8 3/4?
Or take no chance and get the strange 35 splines axles if I want to run in the mid 10?

Dan

35 spline is gonna be far superior, but depending on the car weight and such, you could potentially get away with 30 spline stuff. Gonna need more information to be able to give you a good response.

do yourself a favor and build it for more,then when you make more power down the road it's already for what your gona throw at it. cars do really weird things when axles break.they do lots of expensive stuff when stock u-joints fail also,i don't like how i know either of these.

My high strength 30 spline axles are maybe 20% stronger than stock.

I also stock 35 spline axles for the same price. Of course, you must use a spool to run 35 spline axles in an 8 3/4" rear.