At your horsepower the 8.8 is a ticking timebomb. 9 inch all the way!!!

The 9 inch takes more to turn it due to rotational mass, but with the added strength you will actually gain due to the rigidity and it doesn't flex like the 8.8 so therefore it doesn't bind up as much. Hopefully that all comes out like I had planned in my head!

There is a few articles on the Web where I think it was Hotrod that did dynos where they swapped out the 8.8, 10 bolt, 12 bolt, and 9 inch in a car to see exactly what you gained, and what you lost between all of the axles. It's a good read.


And Incon, What all do you have done to your 12 bolt? Have you welded your axle tubes or put in a brace of some type?

I can't believe how your car gets out of the hole and continues to pull the whole way down the track. It blew my mind the first time I saw it run the other day. That things a beast.