ARP Head Stud 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
1968 - 1976	Cadillac	Calais	Base
1968 - 1976	Cadillac	Commercial Chassis	Base
1968 - 1976	Cadillac	DeVille	Base
1975 - 1976	Cadillac	DeVille	Cabriolet, d'Elegance
1968 - 1976	Cadillac	Eldorado	Base
1976	Cadillac	Eldorado	Biarritz, Bicentenial Edition, Cabriolet
1973 - 1976	Cadillac	Fleetwood	60 Special Brougham
1968 - 1976	Cadillac	Fleetwood	75, Brougham
1968 - 1974	Cadillac	Fleetwood	Base, 60 Special
1976	Cadillac	Fleetwood	Brougham Talisman, Brougham d'Elegance