Those numbers don't match the specs of the Ram Air cams, or any other Pontiac cam, but it's probably a replacement for an 068, like the Summit 2801. Without decent rebuilt 4 bbl heads, that may still be too much cam.
RA IV cam (I have one) is 230/240 @ .050", 308/320 adv., .516 gross valve lift with 1.65 rockers (factory spec).
RA III used 067 (auto) or 068 (manual) same as other 400. 1969 9779067 200/213 269/277 54 113.5 .408/.407 1969 9779068 212/225 288/302 63 116 .408/.407
