The heads have been CNC machined, they are AFR 305 heads. the cam is a cam Motion. solid roller. .691/.684 .262/.272 @.050 On a 112 lSA. My engine builder pollished the pistons removed all the sharp edges, and made room for the spark plugs. The plugs are a race plug from NGK they are a 7 heat range.

the rest of the cam specs are- intake valve open 23.8close at 58.1

exhaust valve open at 69.9 and close at 17.5

overlap is 41.3