Thanks for the replies guys. Sorry, I should had said the original carb was replaced w/ this one about 10 yrs ago.

And yes, those were salvage yard 460 valve covers, I have the original grey ones somewhere i the basement. I know it still has the sticker.

Here is the pic where I attached the one vac line circled in red. Before, it was not attached and the line was plugged off.



Atleast my vac line diagram is not as crazy as some I have seen. Truly hoping the accel pump is the issue and can be fixed. Also kind of pissed that the replacement carb was not replaced w/ the original model