I was with my family doing a parade of garage sales in another member of this forum's neighborhood today when I spoke to a really nice genetlman about his '72 Lemans;
First I was half-surprised that I guessed the year;
Apparently this guy was the original owner of the car, and I was caught off gaurd when he popped the hood to reveal a small block(!);

Now, I must take pause, I KNOW about Canadian Pontiac's, but to me they are synonymous with Paresienne's, Acadian's or Beaumonts... and to a lesser degree Astre's and Canadian rebadged Pontiac Chevettes - I forgot that Lemans's were Canadian and USA built.

I identified this as a '72 by the split grille, but asked the owner if he was aware of if there was any way to tell a Canadian Lemans from a USA Lemans - to which he (righfully replied) "blue block versus orange block";

Are there any other way's to ID a Canadian market car from a USA market car?

I saw the 350 badge on the rocker panel, and assumed a Pontiac 350-2bbl, and asked him if it was "still a 2 barrel" - at which point he popped the hood, and I stopped myself from saying more.
Now for USA-Pontiac's the 350-4bbl was a 68-69 & 1975, then 1977 option, then it was gone again. (I could be wrong about it's absence for 1976, but understand it wasn't available for 1976 on the Firebird, so I have assumed that was a full model line thing).

Was the Chev 350 offered with a 4 barrel carb on cars like this between 1970 & 1974?
(if so, I was plain lucky at guessing it was originally a 2bbl car)