RE: 1/4 scale Corvette with V8
why not set them up for gas so the rings don't rust? is the cooling not up to the task? the walbro carbs can be set up to take only a negative pulse if set up right (spring on the fuel pump diaphragm, that's how the 4 stroke weed eaters work) but I don't know if it would pulse enough with a multi cylinder engine...just thinking out loud