Headgasket for Kb399 and 302 Heads
That's the clearance with a Ferrea 1.9 valve . Tried Edelbrocks with 60cc chamber and the 2.02 valve will not clear those piston notches. The pistons are Enginetech cast stockers and that notch has been clearanced at least another 50 thou to get what I wanted. Cam is of unknown origin that measured 222/231 110 with 465 lift @ 1.5 rocker ratio. Don't forget you lose a little lift with the lifter angle as well.
That's more than I have by at least 100 thou with the same heads milled to 60cc and a block nearly zero decked for stock low comp pistons. Bolt it together with some plasticine or clay and turn the motor over a few times and that will tell how much clearance you really have. You can move the cam ICL around if you need to to get the required clearance.
That's the clearance with a Ferrea 1.9 valve . Tried Edelbrocks with 60cc chamber and the 2.02 valve will not clear those piston notches. The pistons are Enginetech cast stockers and that notch has been clearanced at least another 50 thou to get what I wanted. Cam is of unknown origin that measured 222/231 110 with 465 lift @ 1.5 rocker ratio. Don't forget you lose a little lift with the lifter angle as well.
