Getting ready to purchase a replacement radiator for a 70 E-body 440 with A/C. This combo can test a cooling systems ability to maintain proper cooling. Already have a good fan clutch and fan shroud. 2 decisions to make. Which is better, 2 rows of 1" tubes? 3 rows of 5/8" tubes? 4 rows of 1/2" tubes? Also what is the best material? Aluminum or Copper/Brass?
