High Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180000 psi which is 15% stronger than Grade 8 and kits come complete with hardened parallel-ground washers.

135-3601 ARP Fasteners Cylinder Head Bolt Set For Use With Chevy Big
$59.20