The hyd. roller cam was custom ground at 231 & 239 duration @ .050 and the lift is 626 across the board. The camshaft like I mentioned was supposed to be ground on 110 LSA, but was mistakenly ground on 112 LSA. This is going into a 1970 LS6 454 which is running a 850 double pumper Holley and a turbo 400 with a stall converter. The custom cam grinder who has been in business many many years and was the former owner of Ultradyne Cams claims this hyd roller will make power to 6500 so I will be anxious to see if that really happens. This is going in a 1930 Model A roadster...I know it will never hook up but will be fun to get busy from a rolling start. My concern is to make sure I make the right choice since I am running strictly on motor without nitrous or a blower. I am wondering if I will have to end up running a vacuum canister because I was told this stick only puts out about 10" of vacuum and I am running Wilwood disc brakes on all 4 corners?