big block pro comp heads

Duster Drag Car said
the heads use .650 offset roller rockers and im using eagle 4340 forged h beam rods .990 pin with je forged flat tops 2 valve relief the first castings of these heads used .450 offset and there were problems casting and rockers have been improved with good valves and springs and and a little machining these head will make great power 72 cc cumbustion chambers and 280runners combaired to others with 75cc 78cc 80cc 84cc and 88cc and smaller runners the valves are 1.81 and 2.20

I`ve got a set of procomps on my 505, the valves are certainly bigger than whats stated here. they are 219 and 181. mine are cnc ported(standard port) , use .650 offset rockers. On an 18 time national record holders flow bench, they flowed 352 @.0600, but didn`t go up much w/ higher lift. should be a kick *** street and strip head! Mine required extensive pushrod tunnel clearancing, even after the cnc job. aalso changed to 10 degree stuff.----jfyi------bob