Cometic C5270-066 MLS Cylinder Head Gasket Chevy SBC Bore Thick - 4.100 066

The Cometic C5270-066 is a premium Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Chevrolet Generation 1 Small Block V8 engines. This high-performance gasket features a 4.100-inch bore diameter and .066-inch compressed thickness, making it ideal for performance builds and engines with increased compression ratios.

Key Features:

• Multi-Layer Steel construction provides superior sealing and durability under extreme conditions
• 4.100-inch bore diameter accommodates stock and slightly overbored cylinders
• .066-inch compressed thickness allows for precise compression ratio tuning
• Valve pocketed bore design provides clearance for larger valves and high-lift camshafts
• Compatible with both 18-degree and 23-degree cylinder head angles
• Engineered for Gen-1 Small Block Chevy engines including 262, 265, 267, 283, 302, 305, 307, 327, 350, and 400 cubic inch variants

Cometic MLS gaskets feature multiple layers of stainless steel with proprietary coatings that provide exceptional conformability to sealing surfaces while maintaining strength. The advanced material construction allows these gaskets to withstand extreme cylinder pressures and temperatures common in racing and high-performance street applications. The valve pocket design ensures proper clearance in performance applications using aftermarket heads with larger valves or increased valve lift.