Triple Flow = Coolant re-routed through the core 3 times. Added time fluid spends temperature reducing airflow allows for heater transfer increase. (note: Tripleflow option requires that inlet and outlet be on opposite sides and must use auxiliary tranny cooler for automatic transmission vehicles)<br><br>Note: Filler Neck Center, V8 350 Hose style connections (Connections come straight out and measure 1.5 over 1.75 for V8 engine swap)<br><br><br>Copper Brass all metal original style radiator is built to order in the USA. Allow 4-6 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 Chevy 1937 - 1954 Car<br>Year(s) 1940-41<br>Engine V8 350<br>Notes Filler Neck Center, V8 350 Hose Connections<br>Material Copper/Brass<br>Available Cores High Efficiency<br>High Efficiency Tripleflow<br>Optima Tripleflow<br>Core Size 22 x 16-3/4<br>Available Rows 4<br>Cooler Size 8-1/2x5/16 IF<br>Flow Type Downflow<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.<br><br>