SCE Gaskets 018624 Pro Copper Head Gasket Bore Thick - 4.630 0.043

The SCE Gaskets 018624 is a Pro Copper cylinder head gasket specifically designed for Dart Big Chief and Brodix Big Duke cylinder heads with Chevy bolt patterns. Featuring a 4.630-inch bore and 0.043-inch compression thickness, this gasket is engineered for high-performance racing applications where precise sealing is critical.

Premium Construction:

• Manufactured from 99% pure copper sheets precisely rolled to SCE specifications
• Tested for uniform flatness to ensure precise cylinder head-to-block alignment
• Annealed after processing for optimum mating surfaces and superior sealing performance
• Designed to eliminate uneven loading and reduce leak-down percentages

Performance Features:

• 4.630-inch bore diameter optimized for Big Chief applications
• 0.043-inch compression thickness for accurate compression ratio tuning
• Compatible with 4.840-inch bore center spacing
• O-ring sealing recommended for maximum combustion containment

SCE Pro Copper head gaskets are the preferred choice for professional racing engines that utilize o-rings in the block or head for combustion sealing. The solid copper construction provides excellent thermal conductivity and superior conformability to machined surfaces, making this gasket ideal for high-compression, high-boost, and nitrous applications.