{"product_id":"head-stud-kit-arp-235-4323","title":"Head Stud Kit ARP (235-4323)","description":"\u003cp\u003eFor good reason, virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants.\u003c\/p\u003e\u003cp\u003eSimply stated, there's not a better stud setup on the market today.\u003c\/p\u003e\u003cp\u003eARP uses a premium grade 8740 alloy that is rated far superior to 'aircraft' quality.\u003c\/p\u003e\u003cp\u003eEach stud is placed vertically in special racks and precisely heat-treated to 200,000 psi.\u003c\/p\u003e\u003cp\u003eThis procedure ensures complete heat penetration, and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.\u003c\/p\u003e\u003cp\u003eFollowing heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible.\u003c\/p\u003e\u003cp\u003eThis procedure involves about ten very slight cuts and results in an exceptionally straight part.\u003c\/p\u003e\u003cp\u003eIt's important to note that lesser quality studs 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).\u003c\/p\u003e\u003cp\u003eBecause 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 won't happen with inferior quality head studs.\u003c\/p\u003e\u003cp\u003eARP studs are thread rolled after heat-treat, which gives them about 1000% (that's ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice).\u003c\/p\u003e\u003cp\u003eIt costs a lot more to do it this way, because it's tough on tooling, but the results are well worth the extra effort.\u003c\/p\u003e\u003cp\u003eYou will also note that ARP offers specially undercut studs for several engines.\u003c\/p\u003e\u003cp\u003eThis procedure (done only to the shorter studs) more equalizes the 'stretch' of both studs, which makes for a more consistent clamping force - and one that compensates for head gasket compression when the cylinder heads are installed.\u003c\/p\u003e\u003cp\u003eThis helps prevent blown head gaskets and assures optimum engine sealing!\u003c\/p\u003e\u003cp\u003ePremium quality.\u003c\/p\u003e","brand":"ARP Inc.","offers":[{"title":"Default Title","offer_id":51709182279962,"sku":"ARP235-4323","price":290.02,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0975\/8942\/8506\/files\/61HAvbjmexL.jpg?v=1771337473","url":"https:\/\/trybeepbeep.com\/products\/head-stud-kit-arp-235-4323","provider":"TryBeepbeep","version":"1.0","type":"link"}