OK, I know that most (possibly all?) 1968 Z28s used the 3917291 heads with 2.02 intake valves.
I looked at a very late (I think 3rd week of July) 1968 Z28 that did not have the original block but did have some of the original engine parts.
Owner THOUGHT the heads might be original. But they were casting number 3927186 and dated June of 68.
Is there anyone that can confirm the 186 heads were used on any late model year cars?
I looked at a very late (I think 3rd week of July) 1968 Z28 that did not have the original block but did have some of the original engine parts.
Owner THOUGHT the heads might be original. But they were casting number 3927186 and dated June of 68.
Is there anyone that can confirm the 186 heads were used on any late model year cars?
