Ok, so the pulleys I listed above are for a long pump. I wonder if anyone has made a list of all the different pulleys for the 2 different pumps? In 71 there is a single groove small ID WP pulley that is for the short pump but they are hard to find.
Thanks a million guys! I'm going to try the 1238156 pully. Jay also dropped off couple bigger crank pulleys for me to try. Bob, Jay looked at my car and thinks my fan is too far into my shroud. I'm going to check that tomorrow when I get back to the shop. The old duck that owned this car before me, when it had the 350-2, had put a piece of window screen about 8 inches in front of the radiator to protect it from rocks etc. I left it there because it keeps my nice 700 dollar radiator clean, bug and rock free. I sometimes wonder if it could be causing an issue.
With a big cam like that, most of the exhaust heat goes out the tailpipe and not into the block bc the exh valve opens earlier, letting the heat out, making it easier to cool, another side benefit of a big cam