What year did the LA 318 come out?

Ok, 1967 car model year was the 1st for the LA318. Trucks went a little longer. And of course the Canadians kept the poly a little longer

1966 - last year of the 361 and the 383 changed to an LA (with a 2-bbl version to replace the 361- except for the 2bbl it is the same as the 4bbl - high compression etc)
1967 - new 318 and of course the 440
1968 - the 340

See the change