New differential - Help!

[N20LT4Bird]

I went to the track for the last time of the season friday. I am bummed because the car pulls like a freight train ( over 119 mph through the traps) but I cant hook it. Im running a 2.0 sixty foot with a car that has the power to run a 1.6. There was another f-body (4th gen) there running 11.70's, but had a slower trap speed than me. He had slicks and a 12 bolt.

My long winded point is that I WANT slicks, but fear the demise of my 10 bolt rear. I DO NOT have 2 grand to sink into a Moser or strange rear. But I still WANT one. Has anyone here fabricated a rear end (12 bolt or F*rd 9 inch) to fit the 4th gen f-body. I am thinking of buying a cheap 12 bolt or 9 inch from an old car and modding it to fit the bird. I dont care so much about ABS as long as I dont have to look at the light. Tools are no object, but $$ is. Whats involved?

[blkcamaroz28]

i'd have to say your better off spending the money for a rear. i put a new 12 bolt moser in my 96 z and i can't believe the stability and strength. it just feels good knowing the driveshaft will go before the rear. ps: might want to invest in a driveshaft saftey loop as well.

[Torque]

I have done some research on this as I need one as well and have a friend that has built both a 9 inch and a 12 bolt for his '68 Camaro.

You can find cheap 12 bolts and 9 inches, but, most of them will not even come close to fitting our cars from a width perspective much less a bracketing perspective. Getting the brackets relocated, axles shortened etc. is costly and can add up.

My buddy thought he was saving money by building his up part by part but at the end of the day, he has shared with me he would rather have bought a complete assembly. When he adds all the components up (posi, new axles, machine work, etc.) it ends up being very close to the same $$.

I have never been lucky enough to be the guy that finds the brand new 12 bolt hanging out of the rear of an F-body at the junkyard where they don't know the difference between a 10 bolt and a 12 bolt and sell it to you for $250, but this does seem to happen to many other people. (hopefully someday it will happen to me).

This would certainly be the most cost effective way, however, the likelyhood is low if you have my luck.

Hopefully someone else will have better news for both of us. Meanwhile, keep walking that car out of the hole, if you are running that strong, you are bound to blow that thing up soon. Personally, I am on my 3rd 10 bolt!