Are your heads ported heavily?
What is the cams duration?
What is the stall rating?
Do you know the cars weight?
heads were mildly ported and port matched to intake by builder 2.08 intakes
cam motion grind # R2584-2643-08
duration @ .050 258in - 265ex
lift with 1.6 ratio .683 in .670 ex
stall is guess 4700- 4800
weighs 3260 with me
Sorry, don't get time to get on here much:burnout: