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Message: <blockquote data-quote="hottwheels04" data-source="post: 898094" data-attributes="member: 8550"><p>well since your only doing the basic gt40p setup, which is nothing big thats a stock cobra pair of heads or explorer which is like 1 step above stock e7 heads, so alot of guys run the stock gt cam with 1.7 cobra rockers, or a small ford racing B OR E cam with 1.6 rockers, or trickflow stage 1 cam with 1.6 rockers or the steeda 19 cam with 1.6 rockers all of which have under .500 lift around .470-.490 lift. perfect for gt40 heads anything bigger or agressive you would want a built motor like a 306 bored .30/.40 over h/c/i motor or 331 stroker / higher compression or aluminum h/c/i setups. all of which would be well over .500+ lift which requires much larger valve springs and flowing heads or work done to the gt40 heads.</p></blockquote><p></p>