Edelbrock 8581 - Head Bolt Kit, ARP, Chevrolet 348/409

The Edelbrock #8581 bolt kit contain a complete set of the highest quality head bolts and hardened washers available. Cold-formed to ensure molecular integrity and heat treated prior to thread rolling and machining. Reduced diameter bolt heads eliminate the need for valve train removal to facilitate cylinder head re-torqueing. Hardened and parallel-ground washers are included. Rated at 170,000 p.s.i.

• Highest quality head bolts
• Cold-formed/heat treated
• Ensures molecular integrity
• Reduced diameter bolt heads
• Hardened/parallel-ground washers included
• Rated at 170000 psi
• Manufactured by ARP