We want to help make sure you get that project up and going ASAP. We have been taking care of automotive enthusiasts locally and online since 1996, if you need a reputable business to deal with, we are your only choice. Over 100,000+ customers and counting, We know performance! IMPORTANT NOTE: MUST HAVE ALL SAME length primary head bolts. ARP® uses a premium grade 8740 chromoly that is rated far superior to to "aircraft quality".
Then, each bolt 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 bolts from other manufacturers who just dump pieces in a basket and hope for the best. Following heat-treat, each bolt 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 bolts 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® bolts 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 bolts. ARP® bolts are thread rolled after heat-treat, which gives them about 1000% (thats ten times) better fatigue strength than those bolts that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it s tough on tooling, but the results are well worth the extra effort. The item "ARP 134-3610 Chevy GM LS1 LS6 Cylinder HEAD BOLT Kit 2004-06 4.8L 5.3L 5.7L 6.0L" is in sale since Saturday, February 2, 2013. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Cylinder Heads & Parts".The seller is "lightningmotorsports" and is located in Baton Rouge, Louisiana. This item can be shipped worldwide.