{"product_id":"tick-performance-head-bolt-drill-fixture-for-gen-3-4-gm-ls-series-blocks-tphbdf2543","title":"Tick Performance Head Bolt Drill Fixture for Gen 3 \u0026 4 GM LS-Series Blocks - TPHBDF2543","description":"Tick Performance Head Bolt Drill Fixture for Gen 3 \u0026amp; 4 GM LS-Series Blocks - TPHBDF2543\u003cbr\u003e\u003cbr\u003eThe Tick Performance Head Bolt Drill Fixture will work on all Gen 3 \u0026amp; Gen 4 \nLS-series blocks, and includes the following:\u003cbr\u003e\u003cbr\u003eCNC machined 6061-T6 drill fixture placeDrill bushing for tap drillDrill bushing for counterboreGuide bushing for tapCoated HSS Drill for tap holeCoated HSS Drill for counterboreBright Finish 1\/2-13 spiral flute tapTwo (2) bushing retaining screwsExtra long drill for tap hole operation\u003cbr\u003e\u003cbr\u003e...and if you need to work on the lower 4 bolt holes on 6 bolt blocks (for \nupgrading to 3\/8-16) you can add that option from the drop-down menu as \nwell, which will add the following:\u003cbr\u003e\u003cbr\u003eDrill bushing for tap drillGuide bushing for tapCoated HSS Drill for tap holePrecision 3\/8-16 Tap\u003cbr\u003e\u003cbr\u003eThis fixture can be used to enlarge the bolt holes in the head itself. See \nthe VIDEO tab above for an instructional video. Contact us with questions!\u003cbr\u003e\u003cbr\u003eTick Performance solid-dowel pins are necessary when upgrading to 1\/2in \nhead studs. See the recommended product below. \u003cbr\u003e\u003cbr\u003eCylinder Head: \u003cbr\u003e\u003cbr\u003eAfter performing the job on the block, you can use the DIY Head Fixture on \nthe heads to make room for the larger studs. Bolt the fixture to your head \nand use the larger, 33\/64in drill bit (included in the kit). This will \nprovide ample room for the new, larger 1\/2in studs. \u003cbr\u003e\u003cbr\u003eIMPORTANT:\u003cbr\u003e\u003cbr\u003eThe Tick Performance DIY Head-Stud Upgrade Fixture is designed to work with \nthe Tick Performance ARP 1\/2in head stud kit ONLY (GEN-IV or GEN-III). The \nfixture and instructions may not work with another brand 1\/2in head-stud \nkit.  \u003cbr\u003e\u003cbr\u003e snippet location product_description \u003cbr\u003e\u003cbr\u003e","brand":"Tick Performance","offers":[{"title":"Default Title","offer_id":48150402433282,"sku":"TIC-TPHBDF2543","price":459.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.lethalperformance.com\/products\/tick-performance-head-bolt-drill-fixture-for-gen-3-4-gm-ls-series-blocks-tphbdf2543","provider":"Lethal Performance","version":"1.0","type":"link"}