Just a follow-up note to my previous reply with your picture that I added "2" red arrows too.
I don't see in any of your replies after my reply that says you investigated the possible open vacuum connection in the intake manifold that has the vertical red arrow pointing at it (located below and slightly to the front of your carb mounting on the manifold).
Did you check that? If it is in fact a vacuum port and still open, it will affect how your engine runs.
Dan
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
