Quote Originally Posted by TyphoonZR
Why not a 420/421? Too big a stroke?
420+cid will be head limited with anything under 227cc runners. Not a bad thing if you're using a GM 400 block though. I figured a 6500rpm redline and that would be a perfect combo of parts on a 410/412 short block. You could back down on the gear and go with more tire though and use the torque of a 421cid to pull it. You'll most likely run out of head by 6000rpm.