you need some good flowing heads or else your wasting your time, the stock cam and 1.7 rockers is a good combo until you get some massive heads. 
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retired 1990 Tx dps :T-5, stock bottom 302, shorty headers,o-r x-pipe, ported explorer true gt 40 heads, matching intake. E-cam 1.7's, pro-m 77, 24lb injectors, 3.90 gears.
good for mid 12's on stickies.
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