Speedmaster PCE348.1036 Ford BBF Big Block MLS Head Gasket 4.500" Bore 0.040" Thick

The Speedmaster PCE348.1036 is a multi-layer steel (MLS) head gasket engineered specifically for Ford Big Block (BBF) engines with a 4.500-inch bore diameter and 0.040-inch compressed thickness. This high-performance gasket is designed to withstand extreme cylinder pressures and temperatures in demanding applications including heavy nitrous, turbocharging, and supercharging.

Key Features:

• Multi-layer steel construction with high-pressure laminate design for superior strength
• 4.500-inch bore diameter with 0.040-inch compressed thickness
• Internal embossments that expand under heat to create optimal sealing
• Ideal for aluminum head to iron block or aluminum head to aluminum block applications
• Engineered to handle extreme shearing forces between dissimilar metals
• Superior torque retention and reduced distortion compared to composite gaskets
• Maintains consistent contact pressure throughout engine operation cycles

MLS gaskets are the preferred choice for high-horsepower builds where conventional composite gaskets fail. The steel laminate construction resists blow-out under extreme combustion pressures while the embossed design ensures a reliable seal as the engine heats up. Perfect for serious performance applications where reliability is critical.