1964 chevy c10 driving me crazy

[melhilburn]

I have a 1964 c10 with a strong 292 in line 6 - it will start and idle just fine - once it warms up if you hit the accelerator it will have a very slight lag and then rev up nice and smooth - When I take it out for a drive it will "sometimes" not everytime - sputter pop and just die like it is out of gas - I have clean out the gas tank and gas lines - replaced the fuel filter and rebuilt the carburetor (single barrell Rochester) - I checked the vacuum advance last night and it hods pressure - Should I go ahead and replace the carburetor or does this dound like something I'm overlooking