best carburetor for a ‘79 GMC C7000

[wbmoore]

Just bought a 1979 GMC C7000. It has a 366 big block. Needs a new carburetor. I’m wondering what would be the most reliable replacement. The truck will not be used very often, I’ll run it every month to keep it exercised but it will be driven very few miles. It’s a Forest Service crew truck with water pumps to be used in case of emergency while waiting for the Real Firefighters to arrive. The 366 runs one of the pumps off the PTO.

Carburetor does not need to make high horsepower. Most important is Always Starting Easily and then Run Smoothly after sitting for a month. There will be a few 30˚ days and even more 110˚ days.

Truck now has a very old Holley.

Thanks for any input.