Product Description
High Performance Series head bolts feature a reduced wrenching hex head with a wide flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180,000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.
Applications: 1967-Up Pontiac 350/400/428/455
with Factory D-Port Heads
Hex Head
