Description

Milodon lifter valley vents are a key part of any highly efficient oiling system.  They allow crankcase pressure to rise unobstructed, allow more speedy drain back of oil to the pan and stop a large portion of the unwanted oil drain back over the cam area that causes excessive windage and power loss.  Existing holes in block are tapped and vents screwed in.  Designed for Small Block Chevrolet.