I got a custom grind cam from Dwayne Porter for my 493. Mine is a street car but I told him I like a lumpy idle and want to make alot of power. It is a solid flat tappet that is 264 and 270 @.050. Lift is right about .590 but I use 1.6 rockers and have about .630 lift. Ground on a 110 LSA and I have it in on a 106 centerline. I really like it alot. My eng is a 493 and the car weighs 3700 with me. It runs 92 pump and I race it as I drive it thru the pipes. It has run 10.70's so far. I would call Dwayne or who ever you prefer but that eng could use a nice cutom grind. Good luck , Ron