Top Street Performance Pro Series Cylinder Head Hex Stud Kit for Chevy Big Block

TSP's fasteners are composed of 35 chromoly steel for a minimum tensile strength of 190,000 PSI. Threads are rolled after heat treatment and then tested for tensile and yield strength. All hardware is then given a black oxide finish and oil coating to protect from rust and corrosion.COMPATIBLE WITHCHEVROLET BIG BLOCK V8 6.5L / 396 in³ 6.6L / 402 in³ 7.0L / 427 in³ 7.4L / 454 in³ 8.1L / 496 in³ stroker combinations (application-specific verification required)COMMON VEHICLE APPLICATIONSChevrolet Chevelle / El Camino (Big Block equipped)Chevrolet Camaro (Big Block equipped or swapped)Chevrolet C10 / C/K Trucks (Big Block equipped)Chevrolet Impala / Caprice (Big Block equipped)Marine, street/strip, and performance Big Block Chevy buildsNOTESDesigned for Big Block Chevy engine platforms.Intended for OEM-style Big Block Chevy cylinder head applications.Verify cylinder head generation, port style, fastener length, washer requirements, and torque specifications before installation.Not compatible with Small Block Chevy, LS, or LT engine platforms.SPECIFICATIONSTorque: 4 steps, to 80 ft-lbs, long 70 ft-lbsColor: BlackFastener Style: BoltGrade: PerformanceHead Style: 12-pointMaterial: 35 Chromoly SteelQuantity: Sold as a kit

• Fits Chevy Big Block Mark IV applications including 396, 402, 427 and 454 engines
• Bolt kit with 12-point hardware and 35 Chromoly Steel construction for performance engine builds
• Provides strong, consistent clamping force to support head gasket sealing and cylinder pressure control
• Application-specific torque procedure listed in specs: 4 steps, to 80 ft-lbs, long 70 ft-lbs