Cylinder Head Bolt Kit for Chevrolet 396-402-427-454 Cast iron OEM

Cylinder Head Bolt Kit for Chevrolet 396-402-427-454 Cast iron OEMAll Pro Series bolts are cold forged to ensure molecular integrity, heat treated prior to thread rolling and machining, and meet theARP ZERO defect ZERO failure quality standard. ARP Pro Series head bolt kits are application specific and designed to deliversuperior strength typically associated with competition engines. Pro Series kits are available in standard (8740) 190,000 psi tensilestrength material and proprietary (ARP2000) 220,000 psi tensile

are stronger and ratedat 190

The nuts feature a wide base for better load distribution and sealing

They have a tensile strength of 190

The bolts come with special precision-ground washers

and precision J-form threads rolled after heat-treat to create a fastener that has threads 2000% stronger than others

To ensure that the damperis locked in position

unique oil pan studs

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

That’s whythe fastener experts at ARP have developed special bolts that are far superior to OEM hardware

Choice of conventional hex or space-saving 12-point nuts

they’ve been known to break at the most inopportune time

including use of a premium grade chrome moly alloy