need help choosing 340 cam

Welcome....and that 284 M.P. mechanical is a great cam!

Back in the late 70's early 80's, i had a '71 340 Duster, with that cam in the
STOCK short block, cleaned up heads (no port work) Edelbrock intake, (Victor i think) 750 Holley, 4:88 gears, 4000 Vitar converter and Super Stock Springs it would run 11:80-90's at 113-114 mph.