ARP Head Bolt Kit High Performance 8740 Series Hex Head

It is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there's not a better stud setup on the market today. For openers, ARP uses a premium grade 8740 alloy that is rated far superior to aircraft quality. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.

Following heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It's important to note that lesser quality studs are not even centerless ground the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned something that won't happen with inferior quality head studs

Vehicle Fitments:

Year	Make	Model	Submodel
1965 - 1966	Pontiac	Bonneville	Safari, Base
1964 - 1967	Pontiac	Catalina	2+2
1971	Pontiac	Catalina	Brougham
1963 - 1971	Pontiac	Catalina	Safari, Base
1963 - 1970	Pontiac	Catalina	Ventura
1967 - 1970	Pontiac	Executive	Safari, Base
1967	Pontiac	Firebird	326
1968 - 1969	Pontiac	Firebird	350
1969	Pontiac	Firebird	350 HO
1967 - 1969	Pontiac	Firebird	400, Sprint
1967 - 1971	Pontiac	Firebird	Base
1970 - 1971	Pontiac	Firebird	Formula, Esprit
1967 - 1968	Pontiac	Firebird	HO
1969 - 1971	Pontiac	Firebird	Trans Am
1963 - 1971	Pontiac	Grand Prix	Base
1971	Pontiac	Grand Safari	Base
1971	Pontiac	Grandville	Base
1965 - 1973	Pontiac	GTO	Base
1970 - 1971	Pontiac	GTO	The Judge
1965 - 1971	Pontiac	LeMans	Base
1969 - 1970	Pontiac	LeMans	Safari
1970 - 1971	Pontiac	LeMans	Sport
1971	Pontiac	LeMans	T37
1963 - 1966	Pontiac	Star Chief	Base
1966	Pontiac	Star Chief	Executive
1965 - 1970	Pontiac	Tempest	Base
1970	Pontiac	Tempest	GT
1965 - 1969	Pontiac	Tempest	Safari, Custom