I recently picked up this NOS 1958-59 vintage cover for my truck. I am running a '54 235 with the 4-slot vented cover. Do I need to use a vented cap or will the engine vent enough without it?
https://www.flickr.com/photos/advance-design_parts_co/22853224946/in/album-72157631868452754/
Present cover on my 235.
https://www.flickr.com/photos/advance-design_parts_co/8129182239/in/album-72157631867396207/