Big Block Chevy Dart or Merlin Heads with undercut stems - Pro Series 12-Pt. Bolts
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 re-torquing. All High Performance Series
bolts are 170,000 PSI (which is 15% stronger than Grade 8)
and kits come complete with hardened parallel-ground washers.