ARP Head Stud kit. It is for good reason that virtually every top
professional engine builder relies on ARP Pro Series head studs for
their all out competition engines. Simply stated, there's not a better
stud setup on the market today. ARP uses a premium grade 8740 alloy that
is rated far superior to モaircraftヤ quality. Each stud is placed
vertically in special racks and precisely heat-treated to 200,000 psi.
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.