cam advice for 340 street motor

268 is bigger than he needs to go with discussed converter and gears
268 Mopar is bigger than 268 aftermarket
and 268 aftermarket is too big
Factory hp cam is only 209 @.050 but you can get cams with shorter than HP cam seat durations but more at .050 and more lift
did you come up with an accurate compression ratio?
here's a voodoo
VD 475/494 262/[email protected] 220/226 112lsa #60302
Hughes 495/503 216/220 I do not know what the seat timing is

or as Rusty suggested a whiplash style if your compression comes out lower