I will get some #'s soon. They came on a boat a got. They were on a 496 stroker chevy. They are iron heads.The motor was dynoed at like 675hp. Dougans racing built the engine.The bottom end let go on the motor and there is some chicken sh!t splater on one of the valves like it was detinating(sp)Other than that they look and ran great.I also have a tunnel ram that was match ported to the heads with 2 660 holleys on it for sale..
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