I'm going to put in a set of 4.56 gears in the car and see where it gets me. The car is a lt1 M6 with a 28" drag radial on welds. I'll be shifting the car right around 6900. The car makes about mid 5xx to the tires on spray. I was wondering if anyone uses this set up and what you come through the traps with in 4th gear. Thanks.

 

6900rpms in 4th gear will put you at 126mph; right about what you trap now. You may want a little more tire though cause it looks like youll be veryy close to running out of rpm

f-body.org/gears