That's a good point. Should I go with a copper 4-core or an aluminum 2 core. Classic industries for example shows US Radiator units. They have a 4-core copper and they are describing it as basically a "standard duty. My current unit has 3 coires so I'm sure going to a 4 will be an improvement. They also show a 2-core copper stating it's HD and for high horsepower applications. Does the aluminum transfer heat THAT much better than copper? I can get either for $372 delivered...but I gotta act fast before the discount code exipres. NEither description gives a fin count. Bill M 65 Coronet 500 'vert http://1962to1965mopar.ornocar.com/mmo62008.html 73 Dart Sport, 00 Cherokee Sport, 05 Ram 2500 CTD, 4WD, QC, LB, Laramie 21 Model T Depot Hack, 92 Accord, 06 Mazda 3 On Sat, May 7, 2011 at 12:15 AM, Dennis C. <dennis.2914@xxxxxxxxx> wrote: > > I'll second that, I had mine in the 383 rebuilt and it did not turn out > well. > > The new core had too low of a fin count. The number of tubes was > correct but the fin count was only around 10 per inch. I even tried a > shroud without any luck. Finally an old radiator guy showed me the > problem and told me in Yuma I would not be able to cool with my > radiator. > > That is when I bought a new one from US Radiator, 4 rows of tubes and > much tighter fin count - all is good now. > > Dennis C. > > -- [Non-text portions of this message have been removed] ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! 1962 to 1965 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.