Smeding Performance 572 Crate Motor Crank
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While many 572 big-blocks utilize 4.500x4.500-inch bore and stroke dimensions, Smeding opts for a larger 4.630-inch bore and a shorter 4.250-inch. The big bores unshroud the valves for improved cylinder head breathing, and the short stroke reduces piston speed and friction at any given rpm. Smeding’s own 4.250-inch forged 4340 crank provides the additional stroke. View Related Article
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