[CraftEngines]

We typically recomend the 331ci engine for longivity. We really like the AFR 185 with 10:1 compression and a small hyd roller. We do alot of 224/232 range cams that make good power and are nice drivers. If you would like to turn 7000 rpm you will want to use short travel lifters and a single plane intake. Only disadvantage to the single plane intake is that it will hurt the torque down low (1500rpm). This engine will make 450hp and 425ft/lbs torque. To make 500hp you will have to make this build a little more radical or up the cubic inch, cam, compression, etc.

Thanks
Lance