slowman

bryanm, my fisrt engine in my mustang was about the same as yours. my car was 406 ported heads roller cam about the same spec's as yours but mine was a small block chevy. both cars are very close in weight ,gear etc. i ran 10.48 at about 1000ftelv. i have to think that yours should run 10.6-7s at 6000ft in the 1/4 mile or better. there is calculater to figure out the change from 1000-6000ft that would give you a better idea on how much i would of lost going to 6000ft. good luck, bring it out of the clouds at it should fly