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Precision-Engineered LSX Finished Block

The Chevrolet Performance LSX Cast Iron Block (19417353) is the ideal choice for builders who want to skip the machine shop and get straight to assembly. With a finished 4.185-inch bore and a 9.240-inch deck height, this block is ready for high-performance rotating assemblies. It is specifically designed to handle the extreme cylinder pressures found in modern racing engines.

Engineered for Performance

• Finished Bore: 4.185-inch bore, ready for immediate piston installation.
• Structural Integrity: 6-bolt main and 6-bolt head design for maximum clamping force.
• Reliability: Standard main bearing size for easy component sourcing.
• Sealing: 1-piece rear main seal design for leak-free operation.
• Durability: Rugged cast iron construction with a protective orange finish.

This block is the gold standard for LS-based performance. By utilizing the 6-bolt head pattern, you can run high-boost levels without worrying about head gasket failure. The robust iron construction provides the rigidity needed for high-RPM operation, making it a favorite among professional engine builders and serious hobbyists alike. Whether you are upgrading from an aluminum block for added strength or starting a fresh build from the ground up, this LSX block delivers the performance and reliability you expect from Chevrolet Performance. Shop GGCRACING for all your engine building needs.