Representative Image - May vary from actual part. ARP uses a premium grade 8740 alloy, which is rated far superior to "aircraft" quality, for their Pro Series cylinder head studs.
Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi to ensure complete heat penetration. Then the studs are centerless ground to make them as close to perfectly concentric as possible, unlike lesser quality studs. 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 wont happen with inferior quality head studs.By being thread rolled after heat-treat, these studs have about 1000% (thats ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because its tough on tooling, but the results are well worth the extra effort. We are an authorized ARP dealer and carry over 300 brands of performance automotive parts in our 22,000sqft facility. The item "ARP 155-4003 Black BB Ford 429-460 head stud kit" is in sale since Tuesday, January 13, 2015.
This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Cylinder Heads & Parts". The seller is "parts-powerhouse" and is located in Dayton, Ohio. This item can be shipped worldwide.