i need help w/duster engine

mel there are a lot of things you have to watch for here if you don't want to be doing two or three times all the info so far is correct. how bout going with a 585 lift came and change your rocker ratio. you;ll want .100 on the piston to valve ..60 on the springs and at the retainer to guide. Remeber your doing these clearance checks at static rpm add 7000 is you know what i mean things happen.