I've got a 1983 Z-28 with a 400 sb, bore .30 over, Edelbrock performer RPM intake and cam kit , MSD 6AL ignition , 650 Double pumper holley, 700R4 tranny , and a set of 3.23's in the rear. i dont know how much power its pushing but, it's enough to catch a nasty little 3rd.

I was going to change the gears out for a set of 3.73's just to pin some heads to the seat , but will that be too much for highway driving?