Cylinder Head Bolt Kit for Chevrolet Mark IV with Late Bowtie aluminum, Iron Dart, Pro-1, Pro Top Li

Cylinder Head Bolt Kit for Chevrolet Mark IV with Late Bowtie aluminum, Iron Dart, Pro-1, Pro Top LiHigh Performance head bolts are available with a reduced wrenching hex or 12 point and wide area flanged head that eliminates theneed 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. Material: 8740 Chrome Moly Finish: Black Material 2: Finish 2: Origin: USA

The threads are rolled after heat-treating which gives them about 2000% better fatigue strength than most main bolts that are threaded prior to heat-treating

ARP offers High Performance Series bolts that aremade from a premium grade chrome moly and hardened to a nominal tensile strength of 180

A “must” for any serious engine builder

They have a tensile strength of 190

the harmonic damper absorbs incredible amounts of kinetic energy

Studs and bolts come either black oxide chrome moly or polished ARP Stainless

This procedureinvolves about ten very slight cuts and results in an exceptionallystraight part

Made from premium grade 8740 andheat-treated to 190

ARP has developed special pressure plate bolts that are applicationspecific to ensure the optimum grip length

Available in both High Performance and Pro Series kits

They are designed for each specific application and provide the optimum grip

000 psi and are able to easily handle the tremendous acceleration shock loads (shear) and lateral forces (elongation) found in racing