{"product_id":"performance-radiator-with-shroud-for-oldsmobile-cutlass-cutlass-supreme-1973-1977-3-8l-4-1l-4-3l-5-7l","title":"Performance Radiator with Shroud for Oldsmobile Cutlass Cutlass Supreme (1973-1977) 3.8L 4.1L 4.3L 5.7L","description":"\u003ch2\u003eDirect-Fit Aluminum Performance Radiator with Shroud for 1973-1977 Oldsmobile Cutlass, Cutlass Supreme\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Performance Radiator with Shroud replaces the failure-prone factory copper-brass cooling unit on the 1973-1977 Cutlass and Cutlass Supreme to dramatically increase heat dissipation and prevent thermal runaway under heavy load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Oldsmobile Cutlass Thermal Inefficiency\u003c\/h3\u003e\n\u003cp\u003eFactory 1970s cooling systems relied on dense copper-brass cores and low-flow, mechanical clutch fans that struggle to shed heat under modern stop-and-go driving conditions. Over decades of heat cycles, the original braze joints degrade, internal tubes corrode with mineral scale, and restricted fin density leads to persistent heat soak. In the smog-era engine bays of the \u003cstrong\u003eA-body\u003c\/strong\u003e platform, radiant heat quickly overwhelms aging OEM radiators, leading to elevated cylinder head temperatures, vapor lock, and coolant boil-over on displacement platforms ranging from the \u003cstrong\u003eBuick 231 V6\u003c\/strong\u003e to the high-heat \u003cstrong\u003eOldsmobile 350 V8\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered for maximum thermal transfer, this cooling assembly features a high-flow, furnace-brazed all-aluminum tube-and-fin core paired with 100% TIG-welded aluminum end tanks, eliminating brittle seams and structural fatigue. Aluminum exhibits superior structural rigidity and rapid thermal dissipation compared to traditional stamped brass. The package integrates a precision-formed aluminum shroud with high-CFM electric cooling fans, pulling uniform airflow directly across the entire surface area of the core rather than depending on engine-RPM-driven airflow. CNC-machined inlet and outlet ports ensure leak-free hose sealing, restoring thermal equilibrium to high-displacement powertrains.\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;\"\u003e1973-1977 Oldsmobile Cutlass, Cutlass Supreme\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;\"\u003e3.8L Buick V6, 4.1L Chevy I6, 4.3L Olds V8, 5.7L Rocket 350 \/ GM A-body\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;\"\u003e110-180 hp \/ 175-275 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\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1973-1977 Oldsmobile Cutlass (3.8L 231ci V6, 4.1L 250ci I6, 4.3L 260ci V8, 5.7L 350ci V8)\u003c\/li\u003e\n  \u003cli\u003e1973-1977 Oldsmobile Cutlass Supreme (3.8L 231ci V6, 4.1L 250ci I6, 4.3L 260ci V8, 5.7L 350ci V8)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the A-body Cutlass, Cutlass Supreme?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 1973-1977 Oldsmobile Cutlass and Cutlass Supreme equipped with factory 3.8L, 4.1L, 4.3L, and 5.7L engines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this aluminum radiator include an internal transmission cooler?\u003c\/strong\u003e\u003cbr\u003e Yes, this unit includes standard threaded transmission cooler ports integrated into the lower tank for direct coupling to factory automatic transmission hardlines.\u003c\/p\u003e\n\n\u003ch3\u003eThe Oldsmobile Classic Muscle Caliber\u003c\/h3\u003e\n\u003cp\u003ePreserve authentic American muscle performance without compromising drivability. By eradicating thermal bottlenecking, this all-aluminum cooling module maintains steady operating temperatures, keeping your classic cruiser street-ready under demanding high-ambient conditions.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50593925136632,"sku":"DS-EO6SEBB6W","price":320.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-radiator-with-shroud-for-oldsmobile-cutlass-cutlass-supreme-1973-1977-3-8l-4-1l-4-3l-5-7l-1.jpg?v=1790052889","url":"https:\/\/performancechiptuning.com\/products\/performance-radiator-with-shroud-for-oldsmobile-cutlass-cutlass-supreme-1973-1977-3-8l-4-1l-4-3l-5-7l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}