Description & Operation

The crankcase ventilation system is completely sealed from the atmosphere. It includes a 3-way nipple on the valve cover, a large hose from the nipple to the throttle housing, and a small hose to the intake manifold. The sizes of the hoses ensure good crankcase ventilation under all conditions. Vapors circulate through the smaller hose under all conditions except full throttle, when the larger hose has a higher vacuum level and evacuates the vapors.