[1970GMC350]

Originally Posted by Steeveedee

Vapor canisters are still available. It not being there shouldn't make the engine run badly. There is a steel line in the passenger's side "B" pillar. Vapors through it go from the tank to the canister, which should be located below the battery. If there is currently only one line at the tank, someone has replaced the factory tank. So, you really don't need to buy the canister unless you want to buy another fuel tank. Can you provide a picture of the current setup?

I didn’t see any lines running up the passenger side B pillar. I attached pictures of the filler neck, the line coming out of the tank underneath the truck and I tried to get a good picture of the tank itself. I did see the spot underneath the battery where the charcoal canister would go.