{"product_id":"pqy-cylinder-ls-head-studs-kit-for-chevy-97-03-5-3l-6-0l-12-point-220k-psi-tensile-strength","title":"PQY Cylinder LS Head Studs Kit for Chevy 97-03 5.3L\/6.0L — 12-Point, 220K PSI Tensile Strength","description":"\u003cp\u003e\u003cstrong\u003ePQY Cylinder LS Head Studs Bolts Kit is a direct-fit 12-point head stud and bolt set engineered to replace worn factory fasteners on 1997–2003 Chevy LS engines, delivering higher tensile strength and durable corrosion resistance.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis PQY kit is purpose-built for classic GM LS applications — including 98–02 Camaro\/Firebird F-bodies, 97–03 C5 Corvettes, and 99–03 Silverado\/Sierra trucks with 4.8L, 5.3L, and 6.0L engines. Each component is manufactured and treated to withstand high temperatures and repeated torque cycles, making it a solid upgrade when you need robust clamping and long-term reliability. The kit contains all the studs, bolts, washers, and 12-point nuts required for a complete replacement, simplifying installation for professional mechanics and experienced DIYers alike.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this kit improve clamping strength compared with stock head bolts?\u003c\/h3\u003e\n\n\u003cp\u003ePQY head studs are centerless-ground and heat-treated prior to thread rolling, producing a nominal tensile strength of around 220,000 psi. That higher tensile rating and the use of studs (rather than single-piece bolts) yields more consistent clamping across the head and reduces the risk of fastener yield during high-stress use.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e220K psi nominal tensile strength for improved durability\u003c\/li\u003e\n  \u003cli\u003e12-point nuts for even torque application\u003c\/li\u003e\n  \u003cli\u003eM11 studs for main head locations, M8 for accessory positions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat hardware is included and how many of each part will I get?\u003c\/h3\u003e\n\n\u003cp\u003eThe kit supplies every fastener needed to do a full head-stud replacement on compatible LS engines—organized so you can identify each size during assembly. If an item is missing, PQY customer support offers replacement assistance.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e20 × M11 head studs (main studs)\u003c\/li\u003e\n  \u003cli\u003e10 × M8 head studs (secondary studs)\u003c\/li\u003e\n  \u003cli\u003e30 × parallel-ground washers for consistent seating\u003c\/li\u003e\n  \u003cli\u003e30 × 12-point nuts for secure, repeatable torquing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre these studs easy to install for a DIY mechanic?\u003c\/h3\u003e\n\n\u003cp\u003eYes — the PQY package is designed as a direct replacement for corroded or stretched original fasteners and fits the specified Chevy LS model years without modification. Basic engine disassembly skills, a proper torque wrench, and following the vehicle’s torque sequence are required for correct installation.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eDirect-fit for listed Camaro\/Firebird, Corvette, Silverado\/Sierra models\u003c\/li\u003e\n  \u003cli\u003eFollow manufacturer torque specs: M11 ~80 ft-lbs, M8 ~28 ft-lbs\u003c\/li\u003e\n  \u003cli\u003eUse provided washers to ensure parallel seating and torque accuracy\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and finishes are used and why do they matter?\u003c\/h3\u003e\n\n\u003cp\u003eComponents are manufactured from ductile iron and treated with a black oxide finish to resist corrosion and tolerate elevated under-hood temperatures. Heat treatment and precision thread rolling give the studs consistent mechanical properties and longevity under repeated thermal cycles.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eDuctile iron construction for toughness and fatigue resistance\u003c\/li\u003e\n  \u003cli\u003eBlack oxide surface for rust resistance and heat tolerance\u003c\/li\u003e\n  \u003cli\u003eCenterless-ground bores and rolled threads for precise fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This PQY Cylinder LS Head Studs Bolts Kit is intended for vehicle owners, professional technicians, and engine builders working on 1997–2003 Chevy LS platforms who want a reliable, higher-strength replacement for worn or corroded head fasteners. It's especially useful for those restoring F-body cars, upgrading C5 Corvettes, or maintaining Silverado\/Sierra trucks where consistent head clamping and long-term durability are priorities. If you require matching torque values, repeatable assembly, and a full set of studs, washers, and nuts in one package, this kit provides a convenient, application-specific solution.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this kit fit my 2001 Camaro LS1?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — it supports 98–02 Camaro\/Firebird F-bodies including 2001 LS1 engines as a direct replacement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What torque values should I use for the studs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use roughly 80 ft-lbs for M11 studs and 28 ft-lbs for M8 studs, following your vehicle torque sequence.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"PQY","offers":[{"title":"Default Title","offer_id":48079853682846,"sku":"B0824Q1GM6","price":85.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/pqy-front-packaging-head-studs-kit.jpg?v=1785773100","url":"https:\/\/northtrailauto.ca\/products\/pqy-cylinder-ls-head-studs-kit-for-chevy-97-03-5-3l-6-0l-12-point-220k-psi-tensile-strength","provider":"North Trail Auto","version":"1.0","type":"link"}