Cylinder Head Bolt Kit for Pontiac 400 Ram Air II/IV & 455 HO, Ram Air II, Super Duty with Round por

Cylinder Head Bolt Kit for Pontiac 400 Ram Air II/IV & 455 HO, Ram Air II, Super Duty with Round porIt 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

The engineers at ARP spent quite a bit of time developing these highly effective

They’re application-specific

The importance of pressure plate bolts in a racing or hi-performance street application cannotbe emphasized nearly enough

L19 is a very high strength material compared to 8740 and ARP2000 and is capable of delivering a clamp load at 260

heat-treated prior to thread rolling and machining

Material 2: ARP2000

They are both forged from aerospace alloy and heat-treated prior to thread rollingand machining

To provide you with required reliability and improved performance

or using a spacer for clearance

Not to be used with OEM-style

as well as with a conventional hex head or 12-point (great for tight

substantially stronger than Grade 8 hardware