1969 Dart 340 cam selection help !!!

OP: IF it were my ride, I'd probably lean to one of Lunati's Voodoo grinds...and likely a solid. Even their smallest solid Voodoo grind (264/272, 235/243 @050, .526/.546") is pretty sporty and should wake a 340 right up with the other parts you mentioned...it would probably run like a scalded dog with about 2800-3000 stall and those 3.55s.

That being said, if you like/prefer COMP, no worries, their XE274S would probably float your boat too.

I'm going to assume (I know, dangerous), you plan to use adjustable rockers, but if you want to run non, the XE274H or something similar.