Cylinder Head Questions

[HotRoddin]

Originally posted by MJ86GT
I might not have explained well enough. The 2.02 valves were referring to aftermarket heads. I know that if you go bigger you take away from the bottom end and more for top end, and I rev up to 5500-6200rpm and let off.
I might be also messing up with the fabbed sheet metal upper but we'll see. While the base is a truck lower.

No you don't need 2.02 intake valves for autocrossing ... thats all bottom end. You'd be better off with some cleaned up stock heads than big valved high flowing low velocity heads. I use to Autocross in a 289 Sunbeam Tiger ... basically stock heads and a stock 4bbl holley .. the car had more horsepower than it could handle on a tight Autocross course. You need most everything on the bottom end and a suspension that will stick like a go-cart