Edelbrock 8503 - Head Bolt Kit, ARP, Buick 400-455
The Edelbrock #8503 bolt kit contains 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.
