Man I just switched gears from a 3.31 to a 4.10 on a 12 bolt rear for my car and MAN WHAT A DIFFERENCE, unbelievable. For months I went thinking if it was going to be to small of gear on the highway and all, and it fits just perfect. Great RPM's and good acceleration. Like a new engine.


cool

kissel-

 

Glad to hear man. If the 4spd is a wide ratio tranny (gears spaced farther apart) you pretty well need at least 3.73 and the lower the better (to a point). Even my little 377ci would lose a bit between shifts with the wideratio ST10 and a 3.08 rear. I will be going from 3.08pegleg to 4.56 posi soon..... can't wait .
Have fun.
CoryM