I'm surprised no one has considered the new SB hemi. I know just from the head flow, the potential is there. They are now making kits up to 440 cubes for the 6.1L block. I believe Arrington even sells a pump gas, hyd roller crate motor that puts out 640HP


10.56 at 125.6, with a 1.43 60 ft. E85, Hyd. Roller 410 magnum,full exhaust, 3500 race weight.