NOTE CHECK BEFORE PURCHASE: USA made 4 row copper is 3.5 thick on the sides and 2 5/8 thick in the middle. This design is for 65-67 vehicles that usually have a angled in bottom hose connection. If you have a straight out bottom hose, check the 68-71 models. This unit is 26 inch across for the FIN/CORE material - please check!<br><br>HE CORE DESIGN - FOR EXTREME COOLING. This high efficiency core model will offer 20% more cooling than a traditional 4 row radiator. <br><br>This is a 4 row copper OEM USA made item that has 3.5 thick sides 2 5/8 middle. CHECK BOTH SIDES of your old radiator to determine if you have a 3 row = taper, or a 4 row = both sides 3.5 thick prior to purchase:<br><br>Copper Brass all metal original style radiator is built to order in the USA. Allow 2-4 week build time. Item will be made with automatic transmission. For manual, specify upon ordering.<br>Purchaser is required to match illustration, thickness and measurements prior to purchase to ensure fitment. Item sold as illustrated and described disclosing model information is added as a reference. Custom built items are non returnable (12 month exchange warranty included)<br><br>Country of Manufacture United States<br>Make / Model Pontiac Star Chief<br>Year(s) 1965-67<br>Engine V8 389/400/421/428<br>Notes Both sides are 3-1/2" Wide <br>Material Copper/Brass<br>Available Cores High Efficiency<br>Core Size 17 x 26-1/4<br>Available Rows 4<br>Core Thickness 2 5/8<br>Cooler Size 12-1/2x3/8 IF<br>Flow Type Crossflow<br>Inlet Size 1-1/2"<br>Outlet Size 1-3/4"<br><br>Copper 80's style core with 1/2" tubes on 3/8" centers. Increased cooling efficiency without modifications to car. 4 row High Efficiency offers more cooling efficiency than aluminum cores due to tubes on 3/8" centers. Copper/brass construction to ensure dependability.