I also get @ 10mpg as well. My casting no. suggests that this 235 was birthed between 58-60'. The carb is the ol single Rockchester. I've got the 3 on a tree and don't exceed going slow all the time. I'm hoping that someone chimes in who understands what the hay is going on ans can lay it out in Asst. Wrench Fetcher terms. I also have a gasket leak on the fuel pump, but not enough to make a difference.
