351 in a 72 Mercury Montego, had 2v heads when in High School but since ive grown up it now has 4v heads. Motor has been overhauled, only has 2000 or so miles on it. It has started pushing the dipstick up and then oil out the tube. Even with the valve cover holes open it will do it. Checked compression, all at 140 except one at 135. Oil is not overfull and no oil in radiator. Any ideas?
351 cleveland blowing oil out dipstick.
