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Message: <blockquote data-quote="97stanger" data-source="post: 794207" data-attributes="member: 8229"><p>you will definitely have ptv contact with a cam at that large of a duration. ask me how i know. i just tried to install VT stage 3 blower cams which are 238/242 and i have stock manley 18cc pistons w/ stock valves and it wasnt even close to being degreed correctly, i swapped them in for custom bullet racing cams and they are grinding me 220/230 531/573 114lsa and this should be about the max that bullet said i can get away with with enough clearance for unmodified pistons/stock valves</p></blockquote><p></p>