{"product_id":"granatelli-gm-ls3-6-2l-drive-by-wire-billet-throttle-body-gmtbls108b","title":"Granatelli GM LS3 6.2L Drive-By-Wire Billet Throttle Body – GMTBLS108B","description":"\u003ch2 style=\"margin-bottom:8px;\"\u003e\u003cb\u003eGranatelli Motor Sports GM LS3 6.2L Drive-By-Wire Billet Throttle Body GMTBLS108B\u003c\/b\u003e\u003c\/h2\u003e\u003ch3 style=\"margin-top:0px; color:#CC0000;\"\u003eBuilt for Performance, Fitment, and Dependable Operation\u003c\/h3\u003e\u003cp style=\"margin-top:0;\"\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e GMTBLS108B\u003c\/p\u003e\u003cp\u003eThe \u003cstrong\u003eGranatelli Motor Sports GM LS3 6.2L Drive-By-Wire Billet Throttle Body GMTBLS108B\u003c\/strong\u003e is engineered as a performance-focused Granatelli Motor Sports component for enthusiasts, professional installers, and custom builders. The design emphasizes dependable operation, practical installation, and compatibility with the intended application.\u003c\/p\u003e\u003ch2 style=\"margin-bottom:8px;\"\u003eLS3 108mm Throttle Body – 108mm RACE Drive-By-Wire\u003c\/h2\u003e\n\u003cp\u003eThe Granatelli 108mm RACE Throttle Body is an \u003cstrong\u003eLS3 108mm throttle body\u003c\/strong\u003e precision-machined from 6061-T6 billet aluminum and finished in black. It is engineered for both naturally aspirated and forced-induction LS3, LSA and LSX applications that have outgrown a 102mm or 103mm throttle body.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e108mm round bore:\u003c\/strong\u003e significantly outflows OEM units\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdapter included:\u003c\/strong\u003e comes with an adapter, same as the natural-finish GMTBLS108\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost-ready:\u003c\/strong\u003e electronic motor rated for up to 35 lbs of boost\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive-by-wire:\u003c\/strong\u003e complete electronic throttle body assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTUNE REQUIRED.\u003c\/strong\u003e Trailblazer SS owners must call before ordering for proper calibration.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#CC0000;\"\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eApplication-focused Granatelli Motor Sports design\u003c\/li\u003e\n\u003cli\u003eBuilt for performance and replacement use where applicable\u003c\/li\u003e\n\u003cli\u003eDesigned for dependable installation and long-term service\u003c\/li\u003e\n\u003cli\u003eSuitable for enthusiasts, professional installers, and custom builds\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#CC0000;\"\u003eFitment \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eConfirm the part number, vehicle or engine application, dimensions, and supporting components before installation. Modified vehicles may require additional clearance, fabrication, calibration, or related hardware depending on the combination.\u003c\/p\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#CC0000;\"\u003e108mm vs. 103mm LS3 Throttle Body\u003c\/h3\u003e\n\u003cp\u003eFor a stock-style or mildly boosted LS3 intake, the 103mm \u003ca href=\"\/products\/granatelli-gm-ls3-6-2l-drive-by-wire-billet-throttle-body-gmtbls3\"\u003eGMTBLS3 billet LS3 throttle body\u003c\/a\u003e is the usual answer. Step up to the 108mm GMTBLS108B when your intake manifold opening and inlet tract can use the extra area, typically on high-output naturally aspirated or supercharged and turbocharged combinations. Prefer a natural finish? See the \u003ca href=\"\/products\/granatelli-gm-ls3-lsa-lsx-108mm-billet-drive-by-wire-gmtbls108\"\u003eGMTBLS108\u003c\/a\u003e. Compare every size in our \u003ca href=\"\/blogs\/news\/how-to-choose-the-right-granatelli-throttle-body-size-for-ls-lt-and-hemi-builds\"\u003ethrottle body size guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#CC0000;\"\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVerify your intake manifold opening, bolt pattern, GM 6-pin drive-by-wire connector and clearance before ordering.\u003c\/li\u003e\n\u003cli\u003eThe adapter that comes with the throttle body is included in the box.\u003c\/li\u003e\n\u003cli\u003eA larger inlet may need a different intake tube or coupler.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA tune is required\u003c\/strong\u003e after installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#CC0000;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is this Granatelli Motor Sports part designed for?\u003c\/strong\u003e\u003cbr\u003eIt is designed for the application and function shown in the product title and specifications. Confirm your exact vehicle, engine, dimensions, and supporting components before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this suitable for a performance build?\u003c\/strong\u003e\u003cbr\u003eYes, where the listed application matches the build. Final compatibility and results depend on the complete vehicle combination and installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich engines does the 108mm LS3 throttle body fit?\u003c\/strong\u003e\u003cbr\u003eIt is listed for GM LS3, LSA and LSX applications using the GM 6-pin drive-by-wire setup. Product images also show it on the Chevrolet Silverado 1500 6.2L V8 and the Workhorse W62 custom chassis 6.0L V8. Confirm your manifold opening before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the bore round or oval?\u003c\/strong\u003e\u003cbr\u003eRound. The GMTBLS108B has a round 108mm bore.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it come with an adapter?\u003c\/strong\u003e\u003cbr\u003eYes. An adapter is included, the same as with the natural-finish GMTBLS108.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much boost can it handle?\u003c\/strong\u003e\u003cbr\u003eThe electronic motor is rated for up to 35 lbs of boost.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a tune?\u003c\/strong\u003e\u003cbr\u003eYes. GM throttle body upgrades require a tune.\u003c\/p\u003e\n\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#CC0000;\"\u003eWhy Choose Granatelli Motor Sports?\u003c\/h3\u003e\u003cp\u003eGranatelli Motor Sports develops performance components for real-world street, street\/strip, race, and custom applications. Each product is designed around practical performance, dependable construction, and integration into serious automotive builds.\u003c\/p\u003e\u003cp\u003eMade in the USA in Oxnard, California. Orders placed before 3:30 PM Pacific ship the same day, and shipping is free on orders over $100. 90-day warranty, with extended coverage available.\u003c\/p\u003e","brand":"Granatelli Motor Sports","offers":[{"title":"Default Title","offer_id":68631483187442,"sku":"GMTBLS108B","price":811.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5523\/8898\/files\/F198648398.jpg?v=1793872291","url":"https:\/\/g3dmotorsports.com\/products\/granatelli-gm-ls3-6-2l-drive-by-wire-billet-throttle-body-gmtbls108b","provider":"G3D Motorsports","version":"1.0","type":"link"}