I fear the original cam has a couple wiped lobes. I will be verifying this weekend. If it ran perfectly I would not be asking.
It has had a head gasket done, intake/exhaust, carburetor rebuild, tune up with plugs, wires, cap, rotor, condenser, points, and has had the timing checked and rechecked. Nothing makes a difference. It gets a couple pops out of the tailpipe, and smooths out when running on 5 cylinders.
