{"product_id":"radiator-for-chevrolet-c10-c20-c30-k10-k20-k30-1973-1987-7-4l-4-row","title":"Radiator for Chevrolet C10 C20 C30 K10 K20 K30 (1973-1987) 7.4L (4 Row)","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHeavy-Duty 4-Row Aluminum Radiator for 1973-1987 Chevrolet C\/K Trucks (Rounded Line \/ Squarebody)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The 4-row aluminum radiator replaces the failure-prone factory cooling unit on 1973-1987 Chevrolet C\/K Trucks to maximize thermal dissipation and eliminate chronic overheating under heavy load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Chevrolet C\/K Trucks Radiator Weakness\u003c\/h3\u003e\n\u003cp\u003eFactory \u003cstrong\u003eSquarebody\u003c\/strong\u003e cooling assemblies were engineered with copper-brass or crimped plastic-and-aluminum cores that degrade over decades of heat cycling. In the high-displacement \u003cstrong\u003eMark IV Big Block 454 (7.4L)\u003c\/strong\u003e, high coolant temperatures exacerbate solder fatigue, calcification, and fin corrosion. The restrictive 2-row and 3-row stock designs cannot shed BTUs fast enough during low-speed crawling or heavy towing, creating severe thermal soak that risks warped cylinder heads and blown head gaskets.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis replacement radiator features an all-aluminum 4-row brazed core with high-efficiency louvered fins, delivering a massive increase in heat-transfer surface area. The TIG-welded aluminum end tanks eliminate OEM crimp seals and brittle composite plastics entirely, resisting structural failure under elevated system pressure. Standard 1.5-inch inlet and 1.5-inch outlet ports sustain optimal coolant flow volume, preventing laminar stalling and maintaining stable operating temperatures for high-torque big-block applications.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x 4-Row All-Aluminum Radiator\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100% style=\" border-collapse: collapse border: solid font-size: min-width:\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;\"\u003e1973-1987 Chevrolet 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;\"\u003e7.4L Mark IV Big Block \/ Squarebody (Third Gen C\/K)\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;\"\u003e230-245 hp \/ 360-380 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;\"\u003e716, CC716, CU716, DPI716, CU1599, EC716, AE716, MC716\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1973-1987 Chevrolet C10 (7.4L 454 V8)\u003c\/li\u003e\n  \u003cli\u003e1973-1987 Chevrolet C20 (7.4L 454 V8)\u003c\/li\u003e\n  \u003cli\u003e1973-1987 Chevrolet C30 (7.4L 454 V8)\u003c\/li\u003e\n  \u003cli\u003e1973-1987 Chevrolet K10 (7.4L 454 V8)\u003c\/li\u003e\n  \u003cli\u003e1973-1987 Chevrolet K20 (7.4L 454 V8)\u003c\/li\u003e\n  \u003cli\u003e1973-1987 Chevrolet K30 (7.4L 454 V8)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the Squarebody C\/K Trucks?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 1973-1987 Chevrolet C\/K Trucks equipped with the \u003cstrong\u003e7.4L 454\u003c\/strong\u003e engine. It utilizes the original core support mounting locations and factory hose positions.\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to perform a cooling system flush during installation?\u003c\/h4\u003e\n\u003cp\u003eYes, a complete chemical flush of the engine block and heater core is required prior to installation to prevent legacy sediment from clogging the new aluminum passages.\u003c\/p\u003e\n\n\u003ch3\u003eThe Chevrolet Durability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered for relentless work cycles and high-load towing, this radiator provides the robust thermal overhead demanded by heavy-duty Chevrolet workhorses.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67901864870136,"sku":"DS-ES3FJ9K53","price":213.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/radiator-for-chevrolet-c10-c20-c30-k10-k20-k30-1973-1987-7-4l-4-row-1.jpg?v=1793341711","url":"https:\/\/performancechiptuning.com\/fr\/products\/radiator-for-chevrolet-c10-c20-c30-k10-k20-k30-1973-1987-7-4l-4-row","provider":"Performance Chip Tuning","version":"1.0","type":"link"}