Radiator: 79-81 Firebird TA Pontiac 400 / Olds 403 specific HD 4 core - CooperREAD "DECRIPTION" on lower LHS of page. Delivery additional quote when known where to to go etc. Brand 1979 81 Firebird 400 & Olds 403 Heavy Duty AUTOMATIC or Manual 4 core radiator.. about the best quality Cooper radiator and the largest capacity. NOT FOR CAMARO These are a direct GM replacement original fitting 4 core copper radiator, Use on cars that had factory Ac.. if not its likely the shroud will be different dimensionally. This is about the