500" Dyno

Sorry,but I'm on the lower side = 574 HP. I hope I'm wrong and it is much higher! Best of luck.

I'm working on a 340 6 pack now. The parts are at the machine shop waiting their turn. I'll guess mine will be around 325 HP with X heads and .484" lift. I can't wait to get it back for assembly. What a rush it is to bolt them together.