I am in the process of mocking up my gas tank and fuel lines. I was looking around for pictures of fuel line routing and I saw some posts about gas tank venting, ECS, and charcoal canisters. I read that portion of the FSM for my '71 Challenger and checked a lot of other posts online and I understand the concept, but I've got a problem. All of that stuff is missing from my car. And I didn't know better and the gas tank I got is a non-ECS one and doesn't have any barbs to connect hoses for venting. My fuel filler tube does not have a barb on it either. I'm not concerned with factory correct appearance but I do want it to run properly and plan on driving it often. I don't want it to puke gas from the gas cap or crush my gas tank like a tin can from the vacuum. Here is what I will have: non-vented/non-barbed gas tank, non-barbed filler tube, 3/8" supply fuel line, 5/16" return line, electric fuel pump.
Are any of these options better than the other?
1- Use a vented gas cap and make sure I don't leave the car parked completely full of gas and then not worry about anything else.
2- Get a filler tube with a hose barb and run a 1/4" line to vent into the frame, and use a vented gas cap.
3- Drill a hole in the gas tank and install a bulkhead connector and run a 1/4" line to vent into the frame and use a vented gas cap.
4- Do either of the two above, but instead of vent into the frame run the 1/4" line up to the engine and "T" into the hose that connects the PCV valve to the carburetor, and use a vented gas cap.
I appreciate any help. Thanks!
Kyle
