I have a 67 with a 406 eng (I don't have any spec's but was told cam was close to racing size..wish I knew more sorry, I'm not a mech) and 4L60 tranny. was told the engine puts out about 500hp at fly wheel..I have not dyno'd yet to see. There'll be no dragging, racing, auto-xing etc. just street driving with occasional burst of speed when I find a straight away..haven't been on xpressway yet to see to ck rpm at 80..
I do not know the gear ratio..BUT.. what rear-end would you guys recommend just with this info I've given?? THANKS!!

 

GM 12 bolt, or Ford 9"

 

My experience with the OE 8.2 inch GM axle, it's been reliable as I have used it bracket racing for six years I had it.
This was using a 3.73:1 gear, 10-28.5 slicks with a 3200 lb. '68 Camaro running high 12's.

If I were to chose, 12-bolt design by Spicer, absorbs less power than the Ford 9 inch design.

 

thanks for replies fellows..but.. on GM12 bolt, is that all I need to know..they don't have different ratio's? (sorry for dumb question)

 

A 8.5 Chevrolet 10 bolt out of 1973-4 Nova will work also. I have a 1979 Z-28 RS Camaro Pro-Touring Car .With a 377 cubic inch 500 HP supercharged small block Chevy. Super T-10 four speed with a 8.5 10 bolt .With a 8.5 10 bolt .Moroso " Brute Strength" "posi",Mosier 30 spline axles .Chevrolet 3.42 gears .and with a 26" tall tire I cruise at 2500 rpm at 60 MPH. And get around 20-5 MPG.

 

...I see the Ratio now thanks Everett..

 

..Thanks Z...Nice looking Ride!!