276 flathead test drive big improvement.........but?

[36tudordeluxe]

Originally Posted by 51 MERC-CT

At this point all mention of cam and cam duration are meaningless.
Perhaps the proper adjustment of the idle mixture screws will bring it closer to where it should be.

Have adjusted idle mixture screws to a lean setting as described by Edelbrock. Out looking for a timing light to help solve the problem, the one I have is outdated and missing the spark plug adapter.