1972 340 Radiator Part # Controversy

toolmanmike said
72 A body 340 both transmissions with A/C 22" #3574658
3574634 is without A/C with N51 22"
3574636 for manual transmission

That's the controversy. I think 3574636 is the standard 340 radiator for both auto and manual. There is a 636 in an auto that's a documented survivor, with "36" on the broadcast sheet. @OneOfMany above has "36" on his b sheet. All the A body b sheets I've found online with E55 R34, without A/C, also have "36" under RAD.

However, I did find a Duster's b sheet online built in Oct 71, same as mine, with H51 A/C which had "58" under RAD so that does seem correct. That means my A/C car's radiator was replaced at some point with a re-core Mopar that is 3574636 by random chance coincidence