non running 67 Chrysler 300

Hi, I'm working with a friend of mine to recomission his 67 Chrysler 300 convertible (440, auto) that's been sitting for about 11 years in Colorado.
It'll start OK and idle well, but when you try to drive it around, it'll run for maybe 1/2 mile, then die and it's really hard to restart and won't drive much at all. We drained the tank of the old gas, put in 10 gallons of new, put in a new fuel pump and push rod, filter, soft fuel lines, cleaned the carb a bit. The plugs, wires, coil and carb were all new before the car was parked. Also, is the fuel filter supposed to be full at all times? Ours is full for a bit, then mostly empty with fuel splashing in once in a while. We pumped fuel into a glass jar for about 20 seconds and got about 4 ounces. Does this sound about right? I'm new to carb'd cars, so I'm not sure if the filter and pump are normal. Any ideas? Thanks

"plugs, wires, coil and carb were all new" 11 years ago. Might want to check the plugs & wires. Also this is old enough to have points in the distributor, good idea to put new in. They're inexpensive.

Filter before or after the fuel pump? Doesn't seem like enough fuel getting through. Partially clogged/gunked up line maybe or fuel pump issue. 440's are thirsty buggers.

We'll take another look at the ignition parts. The filter is after the pump next to the frame rail by the radiator. Thanks for the help.

I had a similar situation with my 65 Mustang once. Turns out, there was a pinhole in a fuel line. At idle, the fuel pump could keep up, but by the time I got half a mile, I had used up all the fuel in the bowl and the fuel pump was sucking in too much air to keep the engine running.

Theres a short rubber line on top of the tank it has split and your sucking some air. BTDT on my 62 Dart

I"m considering buying a non running 440 67 chrysler. I'd be interested to know what you found out.

Yup, I vote for dying fuel pump unable to keep up except at idle, or hole in supply lines, or clogged fuel filter (they sometimes have them down in the transmission tunnel, making the latter hard to diagnose.