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
2006 - 2007	Ferrari	F430	Spider, Base
1978 - 1979	Ford	Bronco	Custom, Ranger XLT
1978	Ford	Bronco	Northland
1971 - 1974	Ford	Country Sedan	Base
1971 - 1974	Ford	Country Squire	Base
1971 - 1977	Ford	Custom 500	Base
1975 - 1977	Ford	Custom 500	Ranch Wagon
1980 - 1982	Ford	E-250 Econoline	Custom, Base, Chateau
1980 - 1982	Ford	E-350 Econoline	Base, Chateau, Custom
1977 - 1978	Ford	F-150	Base, Northland
1978 - 1979	Ford	F-150	Ranger Lariat
1977 - 1979	Ford	F-150	Ranger, Ranger XLT, Custom
1977	Ford	F-150	XLT
1969 - 1970	Ford	Fairlane	500
1969	Ford	Fairlane	Base
1971 - 1974	Ford	Galaxie 500	Base
1972 - 1976	Ford	Gran Torino	Base, Squire
1973 - 1976	Ford	Gran Torino	Brougham
1974 - 1975	Ford	Gran Torino	Elite
1972 - 1975	Ford	Gran Torino	Sport
1971 - 1978	Ford	LTD	Base
1971 - 1976	Ford	LTD	Brougham
1975 - 1978	Ford	LTD	Landau, Country Squire
1977 - 1978	Ford	LTD II	Base, Brougham, S
1977	Ford	LTD II	Squire
1969 - 1971	Ford	Mustang	Base, Boss 302
1971	Ford	Mustang	Boss 351
1970 - 1971	Ford	Mustang	Grande, Mach 1
1969 - 1970	Ford	Mustang	Shelby GT-500, Boss 429, Shelby GT-350
1976	Ford	P-350	Custom, Base
1975 - 1976	Ford	P-400	Custom, Base
1975 - 1977	Ford	P-500	Base, Custom
1971 - 1974	Ford	Ranch Wagon	Base
1969 - 1978	Ford	Ranchero	500, GT
1969 - 1971	Ford	Ranchero	Base
1970 - 1978	Ford	Ranchero	Squire
1971	Ford	Torino	500
1969 - 1976	Ford	Torino	Base
1969 - 1971	Ford	Torino	GT, Squire, Cobra
1970 - 1971	Ford	Torino	Super Cobra Jet, Brougham