I think 400 is a safe bet. Torque may be lower than expected with those headers, but you never know. Some of the most fun engines I've had were basic "stock with a cam" builds.
I got to respectfully disagree. That engine stock at 9.8 to 1 compression and with 452 heads was 375 HP, and some would argue it was actually 405 HP. You go to a high lift flat tappet cam, like the MP .509" or better, and do the head work he's talking about and 500 HP is a good number. I know I've done it and checked it on a dyno. The combo would also include a M1 manifold and a Holley or Demon 850 DPer. Just me 2 cents. :evil2:
