ARP 135-3601 Hex Head Bolt Kit for 1965-1998 Chevy Big Block 396-502 Engines

Vehicle Fitment

• 1965-1998 Chevrolet Big Block 396, 402, 427, 454, 502 Engines

Features

• Designed for cast iron OEM cylinder heads
• Hex head design for easy installation and re-torquing
• High Performance Series bolts rated at 180,000 psi tensile strength
• 15% stronger than Grade 8 fasteners
• Includes hardened parallel-ground washers
• Reduces the need for valve train removal during re-torquing
• Ideal for both street and performance applications
• Made in the USA

Specifications

• Socket Size: 1/2" hex
• Material: 8740 chromoly steel
• Finish: Black oxide coating for corrosion resistance
• Includes: 16 bolts, 16 washers

Included Components

• 16x Hex head bolts
• 16x Hardened parallel-ground washers

Product Description

The ARP 135-3601 High Performance Hex Head Bolt Kit is engineered for Chevrolet Big Block engines from 1965 to 1998, covering 396, 402, 427, 454, and 502 cubic inch variants with cast iron OEM cylinder heads. These bolts are part of ARP's High Performance Series, offering a tensile strength of 180,000 psi - 15% stronger than standard Grade 8 fasteners.

The hex head design facilitates easy installation and re-torquing without the need to remove the valve train, a common requirement with traditional bolts. The kit includes 16 bolts and 16 hardened parallel-ground washers, ensuring a secure and reliable seal for your cylinder heads. Whether you're building a high-performance engine or restoring a classic, the ARP 135-3601 kit provides the strength and durability needed for demanding applications.