What gears are you running in the rear and trans? What type of tracks do you normally run? W ehave Lime Rock up here and there isnt enough room to really stretch out...
I mainly run Road Atlanta but I also run Roebling road and sebring.
I have a winters rear end with gears from 2.70 to 4.88 and about every combo in between. My trans has a final ratio of 1:1. At road atlanta I can get up to about 135mph with this car and my ex winston cup car around 180mph. But my issue isnt with top speed its with the 4 to 5 higher speed corners in which I have to up shift and it unsettles the car. Another 1k in rpm whould completely eliminate that. There are several guys in my class that have small block chevy that rev to around 8k and they shift about 30-40% less than me and I'm always chasing them.