Camshaft suggestions
Thats the really old school "204-214" cam spit out on the automated camgrinders by the thousands
lots of private labels as Summit and Edelbrock
sorta looks like the 340 cam but it's not- it's worse
the 278-288 is at .004 whereas the 340 cam is at around .008 so do not compare durations
you can compare the .204 and lift to the cams in the 340 list I posted