Nutso I am not as smart as most these guys around here but I will say this. The 509 lift 292 cam is a GREAT street strip cam for the 440. It is what is in my car and everyone I talk to loacaly loves it. LOTS of bang for your buck just by droping that cam a m1 intake with you exsisting carb. My friend that has been running his car at the track for 3 years every weekend is running a 440 509 cam set of 1000 dollor heads from 440 scource , 850 DP and m1 intake. It has been super reliable and he dives it to the track and home.

Just from watching and listenign this seems to be a real good and popolar set up that gets good street strip characteristics.

I mean heck with that set up I ran 12's in my Duster this year and had not been to the track in years and years. And the guy that goes every week drove my car down the lane and pulled a 11:59.