Bug cut out on me about halfway home the other night after a little bit of studdering. Limped home by staying at fairly low RPM after I noticed it would always cut out 10-15 seconds after hitting cruising speed (40-50 on the roads I'm using, a high 3rd gear). If I let it sit and idle it never stalls, least not within 5-10 minutes.
I've checked everything I know to check but it still likes to hesitate after holding a fairly high RPM. If it does stall it will take a few seconds of cranking to fire back up but runs fine once it does.
Swapped in-line filter, gas tank is venting, getting no hiss of air when I open the tank, carb bowl has fuel and the fuel is clean. Pump is pumping fuel though I haven't tested PSI as I'm not sure how to do that. It gives a pretty decent belch of gas when I hand crank the engine.
What else do I look at? I did a full tune up since the day was pretty nice and it was about due anyways, but it didn't help.
Vehicle is a stock '66.