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Well, the Comet is nearly complete. I'm putting D5 351w heads on my 30 over 289. The heads have 1.94/1.60 stainless valves, heavily ported/polished/gasket matched; screw in studs, guide plates, roller rockers, Holly 600/Dual Plane intake (old cobra style). Hooker Super Comps, Crane 512 Lift/284 Duration hydralic lift, Petronix, X pipe. Gear is 350 with 4 speed. Car weigh about 3100# with me in it. Any guesstimates on horsepower/ e.t. potential? Thanks!
 

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I have a similiar setup in my 68 stang but don't have the larger valves.Its a 302 with 518lift and 292 duration 650dp and wiend single plane intake.I also have 4.11 gears and the car weighs 3350 with me in it and half a tank of gas.I've run a best of 13.69 at 100.94 in the summer heat.This works out to around 270 hp using the hp calculator.The car runs the same mph but slower ets with a untuned 750 vacuum holley
 
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