Do not mean to hijack but how large of a cam did you put in the 380 hp crate motor before you ran into piston to valve clearance issues. I am thinking of buying ported Edelbrock heads and going larger with my cam on my 380 hp crate motor.It will be in my little D-50 that weights about 2950 with me in it,5.14 gears and 3500 converter. Has gone 7.46@91 mph so far in the 1/8. Thanks!