Pro series cylinder head studs from ARP are cold-forged to ensure molecular integrity. They are heat-treated prior to thread rolling and machining and are rated at a whopping 220,000 psi....
These ARP main studs are made from 8740 chromoly steel and have a 190,000 psi tensile-strength rating. They are precision centerless-ground and thread-rolled to Mil-S-8879 specs, with a black oxide...
ARP Pro series Wave-Loc rod bolts have a symmetrical "wave" on the shank that eliminates stress risers. These bolts also have a .0005 to .0070 in. interference fit to guarantee...
Exact tolerances ensure that gaskets and cylinder heads just glide into position and align perfectly. ARP Head Studs include hex nuts and are manufactured by ARP from premium 8740 chrome moly steel...
