Originally Posted by Fasterboatman

Thanks for the feedback, I did go with the Skip White 572s, with a cam for low and mid-range. 625hp at 4500 and 700tq at same. Target rpm is 4500, cruise range is 3200-4000, which is 356-516hp; 604-676tq across that range. Ran great with b3s, but as many predicted, tore them up a bit. putting finishing touched on Arnesons surface drives. Looking for trials around July 4th. Math says best case 70mph, I predict about 60ish. With the sock b3, and 496s, 47mph was the best I ever got. With the 572s (detuned a bit on timing), 57mph at 5100 rpm. I kept the rev limiter at 5100, and the timing at 31 deg. Compression in 9.1:1, but big heads and a cam for big low end makes it run great even at lower RPMs. The dyno runs for the 668 hp numbers was at 34 deg on 91 pump. Skip did run race gas at 36 deg, and got a bit more, but Im going to run 91 octane, and probably 32-34 on timing.