This old car makes be feel ignorant. Basic Questions inside.

67Dart273 said
No Mopar in the 60's --70's ever used a vented cap, which was my point. It has a separate vent, and when the evap emissions (carbon can) system came along, the tank was vented through the can system.

Yes I stand corrected. That is why they used that little vent tube on the filler neck on the early models. Thanks for jogging the old noodle.