Reject

iTrader: (24)

Ok so here's the background i'm at right now. I'm buying parts peice by piece and the rear end is the last part i need. i'm wanting to get a 9inch but when i come to think of the options i'm stuck. at what point would the backbracing be needed? also would 31 splines be a waste of time instead of stepping up to some 35's? I'm just looking for the basic setup, full spool no abs or any of that other bullshit. just a basic rear end. the car, when redone, will have a big single turbo pushing about 18-20#'s

thanks for you help, BTW i placed it here in this section as yall are more oriented into the hardcore racing rather than the other section

chvypwr31

iTrader: (4)

im gonna be runnin a nine inch with 35 spline axles and no back brace on me backhalf trans am. if that helps any.-tony-

night ryder

iTrader: (20)

do it once and do it right. mine is way over kill for me, but i dont have to worry about it breaking. i have a fab9, back braced, 35 spline (gun drilled), with a spool. if i would have done it over i would have gone with a aluminum center and wheelie bar mounts, but those can be added later.

it is only 15 more pounds then the stock 10 bolt.

Reject

iTrader: (24)

at what hp level would those two things be needed?

jetlag

iTrader: (32)

From what I've read, you might start needing a backbrace around 600rwhp.

Steve Burger

iTrader: (33)

The backbrace is not so much of a HP thing as a how hard do you expect to launch thing. With a large single turbo it is not a bad idea. Running a spool, there is no reason to stay with 31 spline axles. Go 35 and be done.

LS1crazy01

iTrader: (14)

I would agree if your using a spool then go 35 spline. And if you go that far then back bracing is a good idea too. My set up is a Fab 9" 31 spline,4.10's,posi. Mostly aggressivie street driving and occacional trips to the track.