Thanks for the info everyone I have a standard boar 350 4 bolt to start my build. I'm going to go with a cast crank and forge the rest. I'm told as long as I go with a 100 shot i should be fine. I may even go with another 350 like my lt1 I built on a 100 shot. It makes only 420 WHP on the bottle with cast crank p rods and forges pistons and stock head gasket. But I also take out 5 degrees timing when I spray it. Only runs 11's in the 1/4 but its still a fun street car.
What do you think of these heads? I am going to have them put better springs in also with titanium retainers.