The first 400/451 stroker that we did needed the block ground along the indicated red line at the junction of the main webbing and the bottom of cylinders 4 & 8. This being necessary to clear the modified 440 crankshaft counterweights. With this engine I have .050" of clearance from the crankshaft counterweight. If it hits with that much clearance I have some other kind of really big problems going on.
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