ARP Head Stud Kit LS6/LS2/LS3/LS7/L92

ARP uses a premium grade¬†8740 chromoly¬†that is rated far superior to “aircraft quality”. Then, 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¬†stud¬†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¬†stud¬†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¬Æ¬†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.