69 340 problems

It sounds to me like maybe the carb's not set quite right, but the problem sounds more ignition related. WIth starting and pumping and whatnot you may have wet fouled plugs now, or just got out of whack on teh distributor. I would suggest takign a break if you can, pull the plugs and hitt hem with brake cleaner and a wire brush, and then looking into the dist again. I'm in CT, but it's like 1 1/2 hours one way to Trumbull.. I'm on the worng side...lol