The old man is running out of gas at highway speeds. Any ideas?

[car10107]

Originally Posted by SkinnyG

I went through three (3!) Carter mechanical pumps on my '77 squarebody in the space of two years - same issues: it would run out of gas under power, and often left me stranded in traffic. I finally went to a AC Delco electric (EP12S) and haven't had an issue since.

That's unfortunate but very helpful news. I thought I was doing myself a favor by selecting the Carter vs one of the made in prc low dollar models. I really want to stick with a mechanical pump so if the lobe on the cam is ok, I will try an AC Delco mechanical pump.