Valve Cover Gasket Set Dart BBC Big Chief Heads

The Valve Cover Gasket Set Dart BBC Big Chief Heads is engineered for big-block Chevy engine builds requiring OEM-grade sealing performance. Designed specifically for Dart's BBC (Big Block Chevy) Big Chief cylinder heads, this gasket pair delivers reliable oil containment under high heat and pressure conditions. Whether you're rebuilding a street engine, performance cruiser, or race platform, proper valve cover sealing prevents oil leakage that can contaminate spark plugs and compromise ignition reliability.

These gaskets feature SCE Gaskets' Accu Seal Pro construction with 0.093-inch thick steel core fiber material coated in PTFE, delivering superior durability and chemical resistance compared to traditional cork or rubber alternatives. The steel core provides dimensional stability under thermal cycling, while the PTFE coating resists oil breakdown and prevents adhesion to the valve cover. This combination ensures long-term sealing integrity on high-output engines where temperature extremes and aggressive PCV ventilation would compromise lesser gasket materials. The gasket pair weighs 0.58 pounds and measures 23.9 inches in length, accommodating the full valve cover perimeter for both cylinder heads.

This gasket set is ideal for engine builders, performance enthusiasts, and mechanics installing or reconditioning Dart BBC Big Chief heads on Chevy big-block platforms. Installation requires standard valve cover removal, thorough cleaning of sealing surfaces, and careful torque sequencing to ensure uniform compression. These gaskets are sold as a pair—one for each cylinder head—and provide years of leak-free operation when properly installed on compatible BBC applications.