I have removed an aftermarket PVC canister filter from my 1962 235ci and plugged the block with a 1 1/4 inch diameter expansion plug.

Do I still need to vent the engine? If so, where can I find an oil breather cap (sometimes called a vented oil filler cap?)?

Thank you,

Scout
1953 Chevrolet Truck Model 3600
1954 GMC Truck First Series Model 100