ALL BOWTIE SPORTSMAN BLOCK

Part Number: 12480159

ALL  BOWTIE SPORTSMAN BLOCK - Part Number 12480159
Bowtie Sportsman Block 4.117-inch bore 400-ci main size, two piece seal. GMPP's Bowtie Sportsman cylinder block is the right foundation for your competition or high-performance street engine. It is the starting point for countless racing engines, as the iron block is available with a variety of finish options to build almost any engine combination. The block has siamesed cylinder walls and four-bolt cast modular iron main caps that are secured by Grade 8 bolts. All blocks in this family have a 9.025 inch deck height. Note: Small bore blocks P/N 1005111 and P/N 1051183 have two-bolt main caps that simplify the installation of steel caps with splayed outer bolts. CNC-machined, 4.177-inch finished bore, two piece rear main seal, iron block that is identical in dimensions and features to Bowtie Sportsman block P/N 12480157, except it has a 400 main size (2.65-inches).
4.117-inch Bore

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