Any mechanics here or .....

[real69ss]

some one who has had a similar problem ?

I have a 68' short bed, that hesitates, like it's running out of fuel. It started at freeway speeds (50+ MPH) but lately it has started doing the same thing at surface street speeds.

I did a tune-up ( plugs&wires ,cap&rotor) and an oil change, and a fuel filter. The problem continues!

I have driven the truck daily for over 3 years with no major part changes/upgrades. It has been converted to an HEI, but that was already in place when I purchased the truck.

It has a carbureted 350 w/ a 700r4.

Any ideas?

Thanks!