Thats a very small cam for a 496. I would go with more cam and it will help keep the cyl pressure down to make it pump gas friendly. I use dished pistons in my 493 and I have 10.6 comp with quench and healthy flat tappet cam that is 264 & 270 @ .050 with .630 lift using 1.6 rockers. I run fine on 92 pump as I only run pump gas. Here is a pic of my dished pistons. Ron


Last edited by 383man; 06/28/12 07:50 PM.