I checked the road draft tube while the engine was idling and felt warm air inside the bottom of the tube. This engine is a fresh rebuilt engine. I cleaned the road draft tube a few years ago. It was very dirty then. It looked pretty good before I put it on. Will check it again.

1954 Chevy 3104 3 Window Hydra-Matic in my family for over 60 Years

Once in a while you get shown the light in the strangest of places if you look at it right... "Scarlet Begonias" Grateful Dead 1974