I am having the same problem in my 69 convertible. It is the base engine.The fuel lines seem fine with a visual check.A new gas tank was placed in it a few years ago.The return line was disconnected twenty some years ago,but doesn't seem to affect the running of the car. I do know the original gascap is on the car. Would changing that help with the smell inside the car? And why? And am I correct in the fact this year did not have a charcoal canister?

 

If the cannister has been inactivated, then that might explain the smell as the tank is sealed (if it has original non-vented cap) and thevapor has to go somewhere.

 

Before you go thru the trouble to replace that canister why not remove the bolt and get a straight plastic connector, some rubber line and with a T connector splice it into the PCV hose.
Check the rubber vapor return line at the tank, and the fuel supply and return lines on the other side of the tank.
There are two S hoses at the fuel pump.
If they are all good and your cap and gasket are good you should be OK.
PG.

 

PG,
Just taking that bolt out of that line fixed the fuel smell problem. Do you think I need to connect it to a vacuum? Thanks for the help.

 

To be sure & safe, you should probably hook it up like it was from factory. One of the emission controls that doesn't say hp.

 

Could I just hook it into one of the empty spots on the intake manifold by where the headlight vacuum hose connects to?

 

Yes, any full manifold vacuumconnection will work, PG.