Attribute Descriptions » Core Thickness
2.25” Thick Core This core is built with 2 rows of 1” tubes. It is the same thickness as a 4 row copper brass core, but cools like a 5 rows
2.75” Thick Core This core is built with 2 rows of 1.25” tubes.It is the same thickness as a 5 row copper brass core, but cools like a 6 row.
This thicker core adds about 20-25% additional cooling capacity over our 2.25" thick core. Keep in mind that in addition to cubic inches of core those options provide over factory, these larger tube sizes also slow the flow rate of the coolant through the core, giving it more time to cool down before heading back to your engine.
We are often asked if we can build a 3 or 4 row radiator. When people ask for that their plane of reference is usually from some experience with a copper brass radiator of a low performance, small tube, aluminum radiator from offshore. We only build high end, very high performance radiators.....the bigger the tubes the better. See our FAQ for more insight)