Speedmaster heads are on and running.....

oldkimmer said
My CNC heads weigh 23lbs each bare, I never weighed the valves, retainers springs, seals and locks. But 6-8 lbs for them seems pretty close. He may be going off the shipping weight. Kim

My complete un modified heads weigh 27.3# Cast heads weigh around 55# so almost 100# weight savings.