ARP Chevy BB Mark V Block w/ World Merlin Heads, Cylinder Head Bolts
Part #: 135-3707
List Price: $160.18
Our Price: $106.76
You Save: $53.42
Chevy BB Mark V block with World Merlin, late Bowtie and Dart aluminum, AFR, ARP 135-3707 12 Point Head, High Performance Cylinder head 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 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.
All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for the additional compression of gaskets.