GM Performance LSX376, Bare Block, 4.065 in Bore, 9.240 Deck, Standard Main, 6-Bolt Main, 1 Piece Seal, 6-Bolt Head, Iron, Orange, GM LS-Series, Each 19417352

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Warning: This Product can expose you to chemicals including lead, chromium (hexavalent compounds) and benzene which are known to the State of California to cause cancer and birth defects, or other reproductive harm ( For More information go to www.p65warnings.ca.gov )

LSX BOWTIE BLOCK
Delivering the seemingly impossible combination of professional racing-level strength and entry-level affordability, the LSX Bowtie Block is the next revolution in high-performance engine-building. This durable iron-block casting is based primarily on GM's production LS7 block, but designed with more material in key areas – including thicker deck and bores – to support displacements of 454 cubic inches or more, and unique six-bolts-per-cylinder-headclamping capability that enables forced-induction and nitrous combinations of greater than 2,000 horsepower.

Because the LSX Bowtie block is based on production LS blocks, all of the LS-Series Gen IV cylinder heads, crankshafts, oil pans, camshafts, and accessories bolt right up to it. There is also a tall-deck version for building even larger engines. Chevrolet Performance delivers the LSX Bowtie Block semi-finished, allowing you to finish it to your needs. Whether you’re building a “tame” 500-horse street engine for your hot rod or a 1,700 horsepower turbo engine for an Outlaw drag racer, the LSX Bowtie Block is the foundation for an unbeatable combination 

GM Performance LSX, Bare Block, 4.065 in Bore, 9.240 Deck, Standard Main, 6-Bolt Main, 1 Piece Seal, 6-Bolt Head, Iron, Orange, GM LS-Series, Each 19417352