Thunder Power's 4-valve cylinder head conversion for big-block Chevys bolts right onto production iron or aftermarket aluminum cylinder blocks. The heads even have the necessary bosses to add an extra ...
In the first installment (April '04) of Sport Truck's 502-cid crate-motor buildup series, we gathered baseline dyno numbers on our test mule's big-block Chevy at Westech Performance Group in Mira Loma ...
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