{"product_id":"performance-radiator-for-pontiac-grand-prix-1979-1987-3-8l-4-3l","title":"Performance Radiator for Pontiac Grand Prix (1979-1987) 3.8L 4.3L","description":"\u003ch2\u003eDirect-Fit Aluminum Performance Radiator for 1979-1987 Pontiac Grand Prix\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Performance Radiator replaces the failure-prone factory heat exchanger on the 1979-1987 Pontiac Grand Prix to eliminate thermal saturation, improve heat dissipation, and maintain optimal operating temperatures under load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Pontiac Grand Prix Radiator Vulnerability\u003c\/h3\u003e\n\u003cp\u003eFactory cooling systems in the \u003cstrong\u003eG-Body\u003c\/strong\u003e platform rely on aged copper-brass or early crimped plastic-tank radiators that degrade significantly with heat cycles. Over decades, factory tube passages suffer from scale build-up, restrictive internal flow, and brittle solder joints prone to stress fractures. Coupled with restricted frontal surface area on the \u003cstrong\u003eA\/G-body\u003c\/strong\u003e front clip, stock heat exchangers struggle with heat soak in stop-and-go traffic or elevated ambient temperatures, risking cylinder head warping and blown head gaskets on aging powerplants.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered as a heavy-duty drop-in replacement, this performance core is constructed entirely from aircraft-grade aluminum. Featuring a high-density, furnace-brazed tube-and-fin core, it maximizes ambient surface contact to optimize convective heat transfer far beyond OEM capabilities. The end tanks are precision-formed aluminum, continuously \u003cstrong\u003eTIG-welded\u003c\/strong\u003e to the core headers to eliminate failure-prone mechanical crimps and elastomer gaskets. Designed to directly replace factory units stamped under \u003cstrong\u003eCC571\u003c\/strong\u003e, \u003cstrong\u003eDPI571\u003c\/strong\u003e, and \u003cstrong\u003eCU571\u003c\/strong\u003e, it restores thermal stability while bolting straight into the stock lower saddle mounts without sheet metal alteration.\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;\"\u003e1979-1987 Pontiac Grand Prix\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;\"\u003eBuick 3.8L (LD5\/LC4) \/ Chevy 4.3L (LB4) \/ GM G-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;\"\u003e110-140 hp \/ 190-225 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;\"\u003eCC571, AE571, EC571, MC571, DPI571, 571, CU571, PR0571, 899571, 21369, A571, REA41-571A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1979-1987 Pontiac Grand Prix Base 3.8L V6 \/ 4.3L V6\u003c\/li\u003e\n  \u003cli\u003e1979-1987 Pontiac Grand Prix LJ 3.8L V6 \/ 4.3L V6\u003c\/li\u003e\n  \u003cli\u003e1979-1987 Pontiac Grand Prix LE 3.8L V6 \/ 4.3L V6\u003c\/li\u003e\n  \u003cli\u003e1979-1987 Pontiac Grand Prix Brougham 3.8L V6 \/ 4.3L V6\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the G-Body Grand Prix?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 1979-1987 Pontiac Grand Prix equipped with the 3.8L and 4.3L V6 engines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this aluminum radiator include an internal automatic transmission oil cooler?\u003c\/strong\u003e\u003cbr\u003e Yes, it features integrated threaded transmission cooler ports matching the factory GM inverted flare lines.\u003c\/p\u003e\n\n\u003ch3\u003eThe Pontiac Muscle Caliber\u003c\/h3\u003e\n\u003cp\u003eKeep your rear-wheel-drive classic running cool under street and strip conditions. Engineered to handle high-demand thermal loads, this all-aluminum core ensures your classic G-body delivers reliable muscle car power without the risk of mid-drive overheating.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50593892991224,"sku":"DS-E3APSAWJL","price":174.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-radiator-for-pontiac-grand-prix-1979-1987-3-8l-4-3l-1.jpg?v=1790052653","url":"https:\/\/performancechiptuning.com\/fr\/products\/performance-radiator-for-pontiac-grand-prix-1979-1987-3-8l-4-3l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}