Posting the car without saying what was in it is pretty misleading. The '67 Camaro could have been a 6-banger, or V8... possibly a 327 (or was it still 283 in '67???) or even a big block (396 for sure, 427 was also probably available). The Cuda could also have been a 6-banger, a 318, a 340, 440 (think so in 72) and maybe even a 426 hemi.
My first car was a '70 Chevelle SS396 4spd. Sometimes I wish I still had it For my son's sake, I'm glad that I don't.