Reply to "COOLING SYSTEM"

Aluminum has slightly less thermal conductivity than copper, but is less dense (lighter) than copper. Aluminum has a lower tensile strength than copper so it is constructed with thicker wall material.
Sometimes brass/copper radiators are considered better for the street due to the strength, but it depends on the manufacturer for proper construction. It’s not the material of construction as much as the design, fin spacing, number of tubes, etc. I WOULD NOT BUY ANY RADIATOR THAT IS CONSTRUCTED OF TWO DISSIMILAR METALS. The expansion rate is different for different metals, also local galvanic activity is possible. The Fluidyde radiators that many of the Pantera guys have been using seem more than adequate and much lighter than the stock one, I believe that most of the problems are not the radiator but the execution of the entire system. The water pump should be replaced with an enclosed impeller type (higher volume), Fans should move more air than the original ones, shouded fan blades a must. Electrical control must be up-graded to handle increased fan wattage. Thermostat replaced with Cleveland type if using the “baffle” plate.
Check my post under "Overheating" topic for pics.