I can tell you that in 1967 there were actually two versions of the 327 that you could get....the first being a 327 cubic inch 325hp model. This was the most common, and was used in most cars (and probably trucks) However, I wanna say its called an L78 for some reason, but that was a 1967 production engine that was 327 cubic inches and 350hp. This was the "high output" 327 engine for 67. My dad has a factory numbers matching 327/350 in a 1967 Chevelle 300 sedan 2 door. It also has the factory 4 speed and is a ton of fun to drive.
