Cylinder Head Stud Kit for Buick 401c.i.d. nail head hex head

Cylinder Head Stud Kit for Buick 401c.i.d. nail head hex headIt 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

ARP only uses premium grade 8740 alloy anda proprietary ARP2000® alloy that are rated far superior to “aircraft”quality alloy steels

You’ll note that the studs have a radiused bullet nose that serves to locate the pan rails

ARP offers two styles of Flywheel/Flexplate bolts: The premium grade Pro Series

and monitor overall length during installation

the bolt should be replaced immediately

Finish: Natural

Following heat-treat

This prevents any unnecessary wear or damage to rotating

There are many important reasons to use ARP main stud kits

It has approximately 200% the fatigue life of 8740 chrome moly steel and has a tensile strength of 220

If you have ever installed a rocker stud into a cylinder head and watched it wobble as it screwed in – you knew from the beginning that the rocker geometry was going to be inconsistent all over the place