Chevy 348 Big Block Engine Restoration - 348 Revival
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The extra 3/4 inch of stroke creates block contact. Jill says he also encounters this when stroking vintage 396 and 427 blocks and already has the Rottler CNC machine station programmed to solve it. Since the W shares the same 4.48-inch bore spacing and major internal crankcase dimensions with the '65-and-up Chevy Mk IV big-block, the same clearance relief cutting program works fine on the W block. View Related Article
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