{"product_id":"radiator-for-chevrolet-blazer-1973-1974-7-4l","title":"Radiator for Chevrolet Blazer (1973-1974) 7.4L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHigh-Efficiency 3-Row Aluminum Radiator for 1973-1974 Chevrolet Blazer (K5)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The 3-row aluminum radiator replaces the failure-prone factory cooling unit on the 1973-1974 Chevrolet Blazer to optimize thermal dissipation and prevent high-load engine overheating.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Chevrolet Blazer Thermal Inefficiencies\u003c\/h3\u003e\n\u003cp\u003eThe original copper-and-brass radiators equipped in early \u003cstrong\u003eK5\u003c\/strong\u003e Blazers are notorious for galvanic corrosion, cracked solder joints, and severe core clogging after decades of service. When tasked with cooling the massive thermal mass of the \u003cstrong\u003eMark IV 454\u003c\/strong\u003e 7.4L big-block V8, the OEM design succumbs quickly to heat soak under heavy towing or low-speed rock crawling. Restricted tube diameters and separating cooling fins compromise convective heat rejection, leading to dangerously spiked coolant temperatures and blown head gaskets.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis direct-replacement unit utilizes a 3-row full aircraft-grade aluminum crossflow architecture with precision TIG-welded tanks to eliminate the failure points common to glued plastic or soldered copper assemblies. Featuring a generous 28.23 x 18.82 x 2.44-inch core, it dramatically increases coolant capacity and expands thermal surface area for maximum heat transfer. An integrated internal transmission oil cooler stabilizes automatic transmission fluid temperatures simultaneously, and the 1.50-inch inlet\/outlet bungs ensure optimal coolant cycling without hydraulic restriction.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x 3-Row Full Aluminum Radiator\u003c\/li\u003e\n  \u003cli\u003e1 x High-Pressure Radiator Cap\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: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\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;\"\u003e1973-1974 Chevrolet Blazer\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;\"\u003eMark IV 454 (7.4L) \/ K5 Platform\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;\"\u003e240 hp \/ 355 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\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 Chevrolet Blazer (7.4L V8)\u003c\/li\u003e\n  \u003cli\u003e1974 Chevrolet Blazer (7.4L 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 K5 Blazer?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 1973-1974 Chevrolet Blazer equipped with the \u003cstrong\u003eMark IV 454\u003c\/strong\u003e 7.4L engine.\u003c\/p\u003e\n\n\u003ch4\u003eAre mounting hardware or step-by-step installation instructions included?\u003c\/h4\u003e\n\u003cp\u003eInstructions and mounting hardware are not included; professional installation alongside a complete cooling system flush and air bleed is highly recommended.\u003c\/p\u003e\n\n\u003ch3\u003eThe Chevrolet Heavy-Duty Caliber\u003c\/h3\u003e\n\u003cp\u003eBuilt to withstand the structural stresses of off-road trail driving and high-demand towing, this aluminum radiator provides the durability and cooling headroom required to keep your classic \u003cstrong\u003eK5\u003c\/strong\u003e running cool under the most severe operating conditions.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67563020747000,"sku":"DS-ET5Q87IUW","price":183.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/radiator-for-chevrolet-blazer-1973-1974-7-4l-1.jpg?v=1790999379","url":"https:\/\/performancechiptuning.com\/de\/products\/radiator-for-chevrolet-blazer-1973-1974-7-4l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}