{"product_id":"high-performance-radiator-for-chevy-gmc-c-k-1500-2500-3500-pickup-suburban-1963-1966-3-0l-3-8l-5-0l-5-7l","title":"High Performance Radiator for Chevy GMC C\/K 1500 2500 3500 Pickup Suburban (1963-1966) 3.0L 3.8L 5.0L 5.7L","description":"\u003ch2\u003eHigh-Capacity AA5052 Aluminum Radiator \u0026amp; Fan Kit for 1963-1966 Chevrolet, GMC C\/K Trucks (SBC \/ Inline-6)\u003c\/h2\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Replaces the restrictive, thermally limited factory copper-brass cooling system with a high-capacity aluminum core and thermostatic electric fan to drastically lower engine operating temperatures under heavy load.\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Stock 1st Gen C\/K Truck Cooling Weakness\u003c\/h3\u003e\n  \u003cp\u003eFactory copper-brass radiators in early first-generation C\/K trucks and classic GM platforms were adequate for their era, but they suffer from severe thermal limitations when subjected to modern traffic conditions, towing loads, or upgraded horsepower outputs. Over decades of heat cycling, the narrow tube diameters and dense fin pitch become compromised by internal scale buildup, leading to poor coolant flow and systemic heat soak. Furthermore, the OEM engine-driven mechanical fan continuously robs horsepower via parasitic drag and fails to pull sufficient cubic feet per minute (CFM) of air through the core during low-speed crawling or idle, frequently resulting in coolant boil-over and the risk of warped cylinder heads.\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n  \u003cp\u003eThis direct-fit replacement is engineered from full AA5052 aircraft-grade aluminum, maximizing thermal dissipation by utilizing a robust 3-row core design measuring 1.73 inches thick. By drastically increasing fluid capacity and employing optimized louvered fins, it delivers a proven 35% to 45% increase in cooling efficiency compared to OEM stock units. The package includes a custom-fitted aluminum fan shroud mated to a low-profile 16.82-inch 12V electric fan (1000 CFM), permanently eliminating the mechanical fan's parasitic loss while guaranteeing continuous, high-velocity airflow regardless of engine RPM. Regulated by the included 180°F-on \/ 165°F-off thermostatic relay kit, the system maintains a highly stable operating temperature window. This ensures consistent engine performance and longevity, whether idling in dead-stop traffic or hauling heavy loads. The unit also features a built-in 1\/4 NPT transmission cooler for automatic gearbox applications.\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;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e1963-1966 Chevrolet, GMC C\/K Trucks \u0026amp; Classic GM B\/A-Bodies\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eEngine \/ Chassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eSBC V8, Pontiac V8, Olds V8, GM Inline-6 \/ 1st Gen C\/K Chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eStock Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e140 - 320 hp \/ 220 - 355 lb-ft (Approx)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eCore Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e17.40\" x 22.76\" x 1.73\" (442 x 578 x 44 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eFan CFM \u0026amp; Draw\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e1000 CFM \/ ≤11 Amps (16.82\" Diameter)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n \n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e1963-1966 Chevrolet C10 C20 C30 Panel 3.8L 4.1L\u003c\/li\u003e\n    \u003cli\u003e1963-1966 Chevrolet C10 C20 C30 Pickup 3.8L 4.1L 4.6L 4.8L 5.3L\u003c\/li\u003e\n    \u003cli\u003e1963-1966 Chevrolet K10 K20 Pickup 3.8L 4.1L 4.6L 4.8L 5.3L\u003c\/li\u003e\n    \u003cli\u003e1963-1966 Chevrolet Suburban 3.8L 4.6L 4.8L\u003c\/li\u003e\n    \u003cli\u003e1963-1966 GMC 1000 1500 2500 Suburban L6 V8\u003c\/li\u003e\n    \u003cli\u003e1965-1966 Oldsmobile Cutlass 5.4L 6.6L\u003c\/li\u003e\n    \u003cli\u003e1964-1965 Oldsmobile F85 3.7L 5.4L 6.6L\u003c\/li\u003e\n    \u003cli\u003e1961-1966 Pontiac Catalina Bonneville 6.4L 6.9L\u003c\/li\u003e\n    \u003cli\u003e1962-1964 Pontiac Grand Prix Star Chief 6.4L 6.9L\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eThe Chevrolet\/GMC Towing Caliber\u003c\/h3\u003e\n  \u003cp\u003eEngineered for rigorous duty cycles, this 3-row aluminum cooling setup delivers the heavy-duty thermal management required to keep classic GM trucks and muscle cars operating safely under high-torque towing demands or extended idle conditions.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":48206250148088,"sku":"DS-ES5LDHC6X","price":234.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/high-performance-radiator-for-chevy-gmc-c-k-1500-2500-3500-pickup-suburban-1963-1966-3-0l-3-8l-5-0l-5-7l-1.webp?v=1775678284","url":"https:\/\/performancechiptuning.com\/products\/high-performance-radiator-for-chevy-gmc-c-k-1500-2500-3500-pickup-suburban-1963-1966-3-0l-3-8l-5-0l-5-7l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}