Mast Motorsports Ls7 Crate Motor Bore
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Cramming a large 4.125-inch bore inside a block with 4.400-inch bore centers doesn't leave much space between the cylinder walls. To ensure effective cylinder seal, Cometic multi-layer steel gaskets are used on the Mast 427. The zero-decked block and 0.040-inch gaskets tighten up quench and bump up the compression. View Related Article
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