I am running a 4.15 crank from 440source with dished pistons in a 440 block. It has 10.6 comp with the Indy EZ heads I use. I went with steel main caps and ARP main studs. Its a street car and I have raced it twice so far with no problems at all. I use a Dwayne Porter speced solid flat tappet cam with 264 and 270 @ .050 and .630 lift with 1.6 rockers. But it is holding up fine so far and I have twisted it to about 6500 max. Ron

Last edited by 383man; 10/19/11 04:13 AM.