Since i put the gear box on it seems my pcv valve won`t keep up.On a buick it`s in the back of the intake,would it work better on the valve cover? My compression is good and the leak down is good,any suggestions?What about a vacuum pump?Where would I get one?do they make them 12 volt or are they belt driven? :dontknow: I did recently have to replace one piston and had the heads completely rebuilt,thats when I tested every thing.I don`t blow alot of oil,just enough to know it`s there,about 1quart every 4th or 5th ride.