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sctrailrider
02-25-2012, 17:43
Does anyone know where to get a big ( 4-5 row) radiator for A 1991 GMC K2500 XC 6.5, ALL I CAN FIND IS A 2 ROW , I haven't looked at mine yet, just thinking ahead for my build in a few weeks when I have the front of the truck apart.

Chris

john8662
02-25-2012, 19:30
A two-row aluminum radiator that has 3/4" - 1" wide tubes would be just fine (actually cools better). Just make sure the "core" thickness is the same as a typical 4-row brass/copper radiator.

More Power
02-27-2012, 11:18
The current best recommendation for a GMT-400 (90's body style C/K) is to use an OE or equiv 1994+ aluminum radiator and matching fan shroud. When converting from a brass rad to aluminum, you'll also need the pressurized coolant overflow surge tank.

Jim