I recently installed a PCV setup from a 64 truck on my 56 272 and removed the draft tube breather and used the block-off plate from the truck.Since doing this,the engine is blowing oil out of the filler cap.This is a low mileage engine that has never used oil and does not show signs of blow-by when running.The PCV is installed the same as it was on the truck and includes a new valve.Anyone have any suggestions about the cause of the oil out of the filler????

Thanks

 

Paul,

Boonville,MO