Cylinder Head Stud Kit for Pontiac 350-400-428-455 cid with D port heads (1967 & later)

Cylinder Head Stud Kit for Pontiac 350-400-428-455 cid with D port heads (1967 & later)It is for good reason that virtually every top professional enginebuilder relies on ARP Pro Series head studs for their all out competitionpowerplants. Simply stated, theres not a better stud setupon the market today. For openers, ARP only uses premium grade 8740 alloy anda proprietary ARP2000 alloy that are rated far superior to aircraftquality alloy steels. Secondly, each stud is placed verticallyinto special racks and precisely heat treated to

Like most high strength

ARP manufactures a variety of special application-specific bolt and stud kits

To be used with ARP’s patented Perma-Loc™ adjusters

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

A sample chart is as follows: ARP offers a highly accurate stretch gauge with a dial indicator that reads in increments of

000 psi and precision machined for optimum thread engagement

Hardened parallel-ground washers are included in each kit

These features combine to enable ARP shafts to handle the added torque requirements of increased capacity oil pumps or heavy viscosity lubricants

To cure this all-too-common problem

J-form thread rolling after heat-treat and a special profile

ARP main bolts are designed to meet the exacting standards and demands of professional engine builders

and the favoriteof leading professional engine builders in all forms of racing