John, I'm near Green Bay (little town called Algoma.) Where are you? Right now my block is at the machine shop, but they should be able to clearance the top edge of the block to make sure the valves don't hit (per the machinist.) The 400 block these heads came from had a much larger bore. I put the heads on the block (NO gasket) and measured. At .490" lift (at the valve) the valve would contact the side of the bore.
Sorry, don't want to steal the thread. Lee
-=>Lee<=- Due to budget constraints the "light at the end of the tunnel" has been turned off!
