you could try this grind, I liked it in a 510 L15 engine, it is a .510 lift, 310duration, 112 degrees overlap and the engine was bored .030 over and had the head milled .030, flat top pistons spun to 8000 no problem and just built monster pewer with a header and stock intake with a hitatchi 328-6 carb!!! unf*&kenbelievable - no idea for whp but ran 13.9 all day long in the 1/4!