{"product_id":"performance-radiator-for-gmc-c-k-trucks-1979-1987-4-1l-4-3l-4-8l-5-0l-5-7l","title":"Performance Radiator for GMC C\/K Trucks (1979-1987) 4.1L 4.3L 4.8L 5.0L 5.7L","description":"\u003ch2\u003eHeavy-Duty Performance Radiator for 1979-1987 GMC C\/K Trucks\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Performance Radiator replaces the factory copper-brass or aging plastic-tank core on 1979-1987 GMC C\/K Trucks to maximize thermal dissipation capacity and maintain stable operating temperatures under high engine loads.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMC C\/K Trucks Thermal Inefficiency\u003c\/h3\u003e\n\u003cp\u003eFactory cooling systems on the third-generation \u003cstrong\u003eSquarebody\u003c\/strong\u003e platform relied on stamped copper-brass units or early crimped-tank designs. Over decades of operation, internal mineral scaling, sediment accumulation, and external fin deterioration severely choke fluid passage. Under heavy towing, steep climbs, or prolonged summer idling, the depleted heat-sink capability fails to stabilize cylinder head temperatures. The resulting heat soak increases the risk of pre-ignition, head gasket failure, and sudden coolant boil-over on both inline-six and small-block V8 powerplants.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis drop-in replacement is manufactured with an all-aluminum tube-and-fin core joined to heavy-gauge aluminum end tanks via precision TIG welds, eliminating fragile crimp seals and corrosive brazing flux. Optimized louvered aluminum fins increase atmospheric surface area exposure to maximize convective heat transfer while promoting efficient engine bay airflow. Built-in precision-threaded transmission cooler connections mate to factory plumbing, delivering a true bolt-in cooling upgrade using OEM core support brackets.\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;\"\u003e1979-1987 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;\"\u003eSBC 305, SBC 350, 4.3L V6, 4.1L\/4.8L Inline-6 \/ Squarebody\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;\"\u003e115–210 hp \/ 200–300 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;\"\u003eCC716, DPI 716\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1979-1987 GMC C1500 \/ C2500 \/ C3500 Pickup\u003c\/li\u003e\n  \u003cli\u003e1979-1987 GMC K1500 \/ K2500 \/ K3500 4x4 Pickup\u003c\/li\u003e\n  \u003cli\u003e1979-1987 GMC C15 \/ C25 \/ K15 \/ K25 Jimmy \u0026amp; Suburban\u003c\/li\u003e\n  \u003cli\u003eCompatible with 4.1L (250 ci) I6, 4.3L (262 ci) V6, 4.8L (292 ci) I6, 5.0L (305 ci) V8, and 5.7L (350 ci) V8 engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the Squarebody C\/K Trucks?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 1979-1987 GMC C\/K Trucks equipped with the SBC 350, SBC 305, 4.3L V6, or inline-six engine platforms.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this radiator include an integrated automatic transmission oil cooler?\u003c\/strong\u003e\u003cbr\u003e Yes, it features an internal transmission oil cooler with factory-matched port fittings for direct connection to OEM cooler lines.\u003c\/p\u003e\n\n\u003ch3\u003eThe GMC Heavy-Duty Caliber\u003c\/h3\u003e\n\u003cp\u003eBuilt to handle severe payload hauling and demanding towing duties, this aluminum radiator delivers rugged heat rejection and consistent operating temperatures under the harshest working conditions.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50593897545976,"sku":"DS-EAPUODAU1","price":222.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-radiator-for-gmc-c-k-trucks-1979-1987-4-1l-4-3l-4-8l-5-0l-5-7l-1.jpg?v=1790052688","url":"https:\/\/performancechiptuning.com\/fr\/products\/performance-radiator-for-gmc-c-k-trucks-1979-1987-4-1l-4-3l-4-8l-5-0l-5-7l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}