I have a 350 .060 over with keith black dome pistons, x-rods, and a fresh .010-.010 cast crank. it is a solid cam 535-550 lift 290-300 duration the heads are dart sportsman angle plug. they have never been ported. this whole motor only ran 3 nights. it is minus intake and oil pan. I ran this motor around 7200rpm no problem. will sell for $1500 firm call cell 636-541-1103