Direct Connection ( Mullen LA ) heads

With 3.2 inch crank and 6.2 inch rods, I expect it will rpm higher than that. I'm curious what the numbers say on peak power/rpm calculator. Given they flow the same above .5 as a set of Speedmaster CNC heads with some valve seat cleanup, I think 321 inches and that much .050 duration will still be very much in the sweet spot and still pulling at 7400.