460 Ford running 5qts 10W30 and a quart of Lucas oil stabilizer. First I was using a built in pcv breather with a hose running to the back of the carb. Cruzing at 60 with the engine reving at 3,000 the crank case pressure would build up and blow it out of the gromet. The dip stick would pop out too. No the pcv was not stuck. Changed to regular non pcv breather and oil would leak out of it. Switched gromet to a baffeled gromet and problem persists.