I have acquired a 1960 Pontiac Ventura w/ tri-power and 4 speed. Not sure of engine size 389 or 347 from what I have been told. The problem is the engine has some blow by. I noticed there's no PCV valve on the system. I have had old Pontiacs before and that usually have the PVC in the lifter valley cover. No evidence of that here. Are the tri-Powers even vented like that? If so would the draw come from the center carburetor? Any help at all would be greatly appreciated. Figured I'd try to find somebody who had experience with this setup before I went to jacking and with it. Thanks in advance y'all have a good one.