Re: Pontiac Block Size (vs SBC/BBC)?

Thank you for correctly pointing out the fact that 1970 was the last high compression and high performance year for GM vehicles, that has been a pet pieve of mine as well. I decided to pull out my old Motors Manual from 1972 to see where the confusion on this comes from.

Oh the memories! The smell of the book, 1972 the year I bought my very first car, and what a car it was, a 1965 Pontiac GTO with headers and a Muncie 4 speed, long time no see old friend.

Anyway, now I understand the confusion, American Motors and GM both dropped their compression in 71, Chrysler and Ford dropped in 1972, so there you have it.
https://www.motorsforum.com/img/3s6

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