70-81 Camaro/Firebird LS Swap Aluminum Performance Radiator And 12 Inch Fan Kit. Firebird applications will need mounting brackets. These COLD-CASE radiators are Tig welded 100 percent aluminum and absolutely beautiful. Don't buy a 3 or 4 row aluminum radiator! It doesn't cool as good as these oversize 2 row models. These radiators are original appearing and have the correct stamping. Once painted, you'd be hard pressed to find a difference over an original versus a COLD-CASE. 100 percent TIG welded Fan Diameter 12 Inch All Aluminum 2 rows of 1.25 inch tubes Polished OE style tanks 16 fins per inch Corrugated fins that give more surface area and more thermal transfer Pressure tested Direct fitment for 70-81 Camaro/Firebird/Trans Am with LS motors Old Part Number: RFE557AK Radiator Specs Core Height 18.4 inch Core Width 27.5 inch Overall Height 19 inch Overall Width 33.2 inch Overall Thickness 6 inch Tubes (2) 1.25 inch Tubes Upper Hose 1.57 inch Lower Hose 1.57 inch