Reply to "ANYONE KNOW THE PART # ????"

There's a lot of controversy on Pantera radiators, but cooling problems with good components seems to be flow-related. And one of the largest restrictions in the system is the radiator itself. Besides lighter weight, aluminum radiators can use 1" to 1-1/2" wide x 0.060" wall thickness tubes, while the best copper radiators use a maximumum size tube of 5/8" x 0.015" wall thickness, to get comparable heat transfer. This is one reason copper radiators are delicate: 0.015" is tinfoil-thickness; you can tear copper tubes with your fingers! Big tubes are stronger and have more surface area inside and out, as well as flowing more water. Fewer tubes allows more air to go thru the core, carrying more heat away. Those two reasons are why all car makers in the world have gone to aluminum radiators. To get the correct water flow rate in a 300-bhp Z-28, GM uses a single large tube, single pass aluminum radiator that weighs only 10 lbs. Each tube has built-in rougheners inside so water flowing gets thrown around as it passes thru, liberating even more heat. So for maximum cooling, one wants a two-tube aluminum radiator, all-welded for structural strength. The number of passes is up to you. As the number of passes of the water across the core increases, the cooling efficiency goes up, but 2 passes are not twice as good as one, and three passes are only marginally better than two. For dependability, run non-corrosive coolant: some local tap water will dissolve aluminum cooling parts without an additive. One East Coast owner dissolved two Fluidynes in a year (under warranty) before the company recommended using a certain additive. Since then (2 more years), no problems. Finally, distilled water is more acidic than plain tap water, so using distilled fixes nothing; the key is to use a proper additive with aluminum.