Originally Posted By Mopar_Rich
Gregs: The laws of physics are the same, but EFI can use the capabilities a little bit better. On my dyno I tuned radical race motors with carburetors and produced good power. After those engines were converted to a smart EFI system I made about the same max power but I was able to tame the idle a bit using the above techniques with no cam change. In a race motor you design the cam for the engine/head combo and then tune as required.

A wide LSA cam is a way for an EFI system that cannot do these things to run better on the street simply because idle is better. Its not much more complicated than that.


Rich, I follow what you are saying, and that is what I figured. I think there would be a small loss of upper mid range and top end power, because the LSA is wider than ideal, shortening needed overlap duration.

8..603 156 mph best, 2905 lbs 549, indy 572-13, alky