{"product_id":"throttle-body-spacer-for-gmc-c-k-trucks-1988-1995-4-3l-5-0l-5-7l-1","title":"Throttle Body Spacer for GMC C\/K Trucks (1988-1995) 4.3L 5.0L 5.7L","description":"\u003ch2\u003eBillet Aluminum Throttle Body Spacer for 1988-1995 GMC C\/K Trucks\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The CNC-machined throttle body spacer increases intake plenum volume and smooths incoming air velocity on 1988-1995 GMC C\/K Trucks to sharpen throttle response and improve low-end torque.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMC C\/K Trucks Intake Plenum Inefficiency\u003c\/h3\u003e\n\u003cp\u003eOn factory \u003cstrong\u003eGMT400\u003c\/strong\u003e platform trucks, the factory Throttle Body Injection (TBI) assembly bolts flush against the cast-iron intake manifold floor with minimal standoff distance. This compact packaging creates an abrupt transition directly below the butterfly valves. The resulting shear angle induces air turbulence, uneven air-fuel atomization between front and rear runners, and sluggish throttle response off idle, which hampers low-RPM pulling power under heavy loads.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003ePrecision CNC-machined from solid \u003cstrong\u003e6061-T6 billet aluminum\u003c\/strong\u003e, this spacer establishes a critical buffer between the throttle body base and the intake runners. By increasing plenum volume, it optimizes air charge velocity and allows fuel droplets from the central injectors to mix more thoroughly before entering the cylinders. The continuous bore profile eliminates restrictive shelf edges, reducing pumping losses without altering vacuum signals. An anodized surface finish protects against heat soak, fuel wash, and corrosive crankcase vapors. It installs directly using factory mounting points with no ECU tuning required.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; margin-bottom: 20px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e1988-1995 GMC C\/K Trucks\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eLB4, L03, L05 \/ GMT400\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e160-210 hp \/ 235-300 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eN\/A (Performance Upgrade)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1988-1995 GMC C1500 \/ K1500 (4.3L V6 LB4, 5.0L V8 L03, 5.7L V8 L05)\u003c\/li\u003e\n  \u003cli\u003e1988-1995 GMC C2500 \/ K2500 (5.0L V8 L03, 5.7L V8 L05)\u003c\/li\u003e\n  \u003cli\u003e1988-1995 GMC C3500 \/ K3500 (5.7L V8 L05)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the GMT400 C\/K Trucks?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 1988-1995 GMC C\/K Trucks equipped with the \u003cstrong\u003eLB4\u003c\/strong\u003e, \u003cstrong\u003eL03\u003c\/strong\u003e, or \u003cstrong\u003eL05\u003c\/strong\u003e TBI engines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs an ECU tune required after installation?\u003c\/strong\u003e\u003cbr\u003e No, this mechanical spacer operates within factory air-fuel trim boundaries and requires no software recalibration or chip tuning.\u003c\/p\u003e\n\n\u003ch3\u003eThe GMC Workhorse Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt for the severe demands of towing, trailering, and payload duty, this billet spacer provides the structural integrity and airflow stability needed to keep your \u003cstrong\u003eGMT400\u003c\/strong\u003e performing under demanding truck workloads.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50501053579512,"sku":"DS-E0V5Z710J","price":63.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/throttle-body-spacer-for-gmc-c-k-trucks-1988-1995-4-3l-5-0l-5-7l-1_b3afb742-e5e3-47c0-b5b6-4a39121dfcca.jpg?v=1789325847","url":"https:\/\/performancechiptuning.com\/products\/throttle-body-spacer-for-gmc-c-k-trucks-1988-1995-4-3l-5-0l-5-7l-1","provider":"Performance Chip Tuning","version":"1.0","type":"link"}