sbp wheels cause high brake temp?

I`ve never heard of brakes cooling better based on the diameter of the bolt pattern??? I`m not quite sure what your buddy may be referring to. The only thing I can think of is the A-body 8.75"`s come equipped with 1.75" shoes. If you went with alternate backing plates and the later model big bolt pattern drums you could pick up a larger shoe and in theory less heat. Using the small bolt pattern is fine for your 360 though, MA MOPAR used it with 383 and 440 cars. The downside is there are just very few wheels with the small pattern.