Fly Weights

[Billy Nees]

Originally Posted by Mike Jones

ok,
Iron Duke late 1960`s? I recall a 68 or 69 Nova w/4 banger, and a guy called it an Iron Duke.

The Iron Duke popped up in the late 70s and lasted through the 80s. They had some similarities to the Chevy II engine but I don't think there was much in the way of parts interchange.
The Chevy II 4s were used by Mercury Marine for a very long time. I know they survived into the 1990s and maybe later.