I really want to get a new rear for my car. right now i have a 2.73 blown posi that spins one wheel like there's no tommorow. and its really holding me back. I am planning on getting as much as I can from this motor N/A. So I want a beefy rear, not a 10 bolt. I am trying to decide on either an aftermarket 12 bolt or a ford 9". I was just wondering which is cheaper and which is stronger. I would rather have the aftermaket 12 bolt. But I need some of your opinions.
Thanks!!

 

From what I've seen a moser 9" would be stronger, and almost the same cost.

 

I think 9"s can be made stronger, but I think th 12 bolts can be had a little cheaper. How much power are you planning on having. You may be able to use a 9 bolt and save yourself quite a bit of money.

 

I am trying to get to low 12's, I am planning to get the holley steath ram setup, new heads, cam, ported to match, injectors, chip, new stage 3 shift kit turbo 350(from my neighbor), a rear with 3.73's,sub frame conn., and some suspension work. Obviously i don't have the money for it all now, but i will get it slowly.

 

For low 12's, I'd consider the 9-bolt. But if you want either the 9" or 12-bolt I'd get the cheaper of the two. Either one will hold up just fine to low 12's.

-Rippin

 

I would go with the 9" for the simple reason that you can change the gears on the track and then back to the street gears in a short time.

 

I don't like talking about fords, but what ford cars have a 9" in them? and can u just use them right from the car? or you need to change things?
thanks

 

For the times you plan on running, save yourself a bunch of money and get a Borg Warner 9 bolt. Even if you have to put in a new posi unit, gear set and install kit, it'll still be 1/2 the price of a 12 bolt or Ford 9 inch.

Miles

 

no factory ford rears will work unless you modify them. you need a place for the torque arm to mount

 

how about if you wanted to hit 10's? what rear should you use?

 

I'd definately go with the Ford 9. They are about the same price as a GM 12 bolt so why not.

 

dont the 12 bolts weigh more? i would think you'd want something heavier in the rear

 

For traction purposes? If you're going to be running 10's, you'll probably be running slicks or ET Streets. Slicks/ET Streets = Traction. That weight in the rear won't make too much of a difference. If you still spin, something's screwy. To be honest, I'd go Ford 9" for many reasons including less weight.

-Rippin

 

Really, I think its mostly just personal preference. Either can be built to just about any pruposes.

 

The way the gears mesh on a Ford 9" uses more horsepower than a GM 12 bolt.