[lkt1954]

During the restoration of my 66 GTO the radiator shop the cleaned my gas tank welded up the vent tube hole and in the rush to finish I just put the vent tube in place in the trunk and let it unhooked. Every time I take the gas cap off there is pressure. I think I want to hook up the vent tube for pressure relief and correctness.

My initial thought is take a very damp rag and stuff it down the filler neck enough to seal it off and then drill a hole for the line. I am thinking a rag that wet should absorb any vapors for a short period of time. I think I can do this without dropping the tank. Any thoughts here or just get a vented cap or drop & drain the tank then do this?

Thanks
Larry