{"product_id":"performance-radiator-with-shroud-for-pontiac-bonneville-1972-1973-6-6l-7-5l","title":"Performance Radiator with Shroud for Pontiac Bonneville (1972-1973) 6.6L 7.5L","description":"\u003ch2\u003eHigh-Efficiency Aluminum Performance Radiator with Shroud for 1972-1973 Pontiac Bonneville\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Performance Radiator with Shroud replaces the thermal-limited factory cooling assembly on the 1972-1973 Pontiac Bonneville to lower coolant operating temperatures and eliminate idle heat soak in high-displacement V8 engines.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Pontiac Bonneville Thermal Dissipation Bottleneck\u003c\/h3\u003e\n\u003cp\u003eFrom the factory, the \u003cstrong\u003eGM B-body\u003c\/strong\u003e platform relied on heavy copper-brass radiator cores mated to mechanical clutch fans. Over time, internal solder bloom restricts coolant passages, while external fin oxidation limits heat transfer. Compounding this, the massive thermal load generated by the \u003cstrong\u003ePontiac 400 (6.6L)\u003c\/strong\u003e and \u003cstrong\u003ePontiac 455 (7.5L)\u003c\/strong\u003e V8 platforms frequently overwhelms the stock mechanical fan at low engine RPMs, leading to rapid temperature spikes during idling or in high-ambient-temperature conditions.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis drop-in performance unit replaces aged OEM equipment with a high-efficiency all-aluminum tube-and-fin core and 100% TIG-welded aluminum end tanks, eliminating the failure-prone crimped or soldered joints of factory components. Engineered specifically for \u003cstrong\u003eGM B-body\u003c\/strong\u003e engine bays, the integrated aluminum fan shroud channels air uniformly across the entire fin surface area. The accompanying electric fan maintains consistent high-CFM static pressure regardless of engine RPM, preventing heat soak and preserving oil viscosity under heavy operating loads.\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;\"\u003e1972-1973 Pontiac Bonneville\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;\"\u003ePontiac 400 \/ 455 V8 \/ GM B-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;\"\u003e185-250 hp \/ 315-380 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;\"\u003eCC161, DPI161, 3023837, 3025223\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1972 Pontiac Bonneville 6.6L 400 cu in V8\u003c\/li\u003e\n  \u003cli\u003e1972 Pontiac Bonneville 7.5L 455 cu in V8\u003c\/li\u003e\n  \u003cli\u003e1973 Pontiac Bonneville 6.6L 400 cu in V8\u003c\/li\u003e\n  \u003cli\u003e1973 Pontiac Bonneville 7.5L 455 cu in 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 GM B-body Bonneville?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 1972-1973 Pontiac Bonneville equipped with the \u003cstrong\u003ePontiac 400\u003c\/strong\u003e or \u003cstrong\u003ePontiac 455\u003c\/strong\u003e V8 engines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I retain my original automatic transmission cooler lines?\u003c\/strong\u003e\u003cbr\u003e Yes, this assembly incorporates internal heat exchanger ports designed to mate with standard factory GM transmission hardlines.\u003c\/p\u003e\n\n\u003ch3\u003eThe Pontiac Muscle Caliber\u003c\/h3\u003e\n\u003cp\u003eVintage Pontiac full-size muscle requires sustained thermal stability to protect massive rotating assemblies from pre-ignition and thermal breakdown. This cooling package delivers the thermodynamic headroom needed to harness big-bore Pontiac torque on the street or open highway.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50593935032568,"sku":"DS-EAO9DDW87","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-pontiac-bonneville-1972-1973-6-6l-7-5l-1.jpg?v=1790053689","url":"https:\/\/performancechiptuning.com\/fr\/products\/performance-radiator-with-shroud-for-pontiac-bonneville-1972-1973-6-6l-7-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}