Pulls hard and then quits...

67Dart273 said

You need to define "quits."

Does it run but not pull, IE run out of power?

Does it "quit" as if you shut off the ignition?

Did you try "getting out of it" for a second, two, or three, to see if the pump would catch up?

What do you have for ignition system and fuel?

Click to expand...

When it quits, it just runs out of power. The stock mechanical fuel pump is on the engine right now and this was the first thing that came to mind when I started to think about it. I'm pretty sure that I'm just burning through all of the fuel in the bowls by the time I hit 70mph. BTW, I just finished rebuilding the carb so the inlet needles and seats are brand new and the bowl height and drop is perfect.

The ignition is the stock 1978 electronic ignition. A full MSD setup was next on my to do list but I think I'll have to address the fuel delivery issue first.