Fel-Pro 1071061 is a Performance PermaTorque MLS head gasket for Chevy and GMC Big Block Chevy V8 engines using a 4.380 in. bore, including common 396, 427, 454, 502, and 572 cu in. combinations. Its multi-layer steel construction helps keep combustion, oil, and coolant sealed when high cylinder pressure and cylinder head movement put a conventional gasket under stress.

Fel-Pro 1071061 Technical Specifications:

• 4.380 in. bore diameter, 111.252 mm equivalent, supports Big Block Chevy V8 engine builds with matching cylinder bore requirements.
• .061 in. compressed thickness and 15.703 cc compressed volume provide known dimensions for compression planning and engine assembly checks.
• Multi-layer steel construction is designed to maintain contact pressure between the cylinder head and block in high-output and racing-style service.
• Seals combustion, oil, and coolant on demanding layouts with open deck surfaces, numerous cooling passages, and relatively few head fasteners.
• Application-specific PermaTorque MLS design requires no lock wire and is sold individually for one cylinder head position.

Well suited for performance Big Block Chevy engines that see high combustion pressure, rapid cylinder head movement, or racing use. Verify block and cylinder head surface condition and all engine builder specifications before final assembly.

Use on Chevy or GMC Big Block Chevy V8 applications only when the engine build calls for a 4.380 in. bore head gasket and the listed compressed thickness and volume match the build plan.