[John Brown]

Sam,

Just to reinforce Rob, Pete, and Jim's explanations of the effects of cam timing, lift and duration vs. streetability, let me say there are times when at work I have too much time on my hands (like today). I also have Desktop Dyno and Desktop Dragstrip. A couple of years ago I ran computer simulations of a friends car combination using factory big block cams and found that the less radical cams would make more usable power and give better E.T.s. After taking lots of grief from his "engine guru", he finally tried the lowly 375 horse 396 factory cam. Result, more power, lower E.T. and plenty of vacuum to run the power brakes. So if you have access, build your combination on the computer first, then buy the parts. You won't be dissapointed.