I am trying to put together a PCV kit and so far I have seen two different sizes of intake manifold Vacuum threads. I did not write them down! Does anyone know how many different sizes GM did for the 216/235/261 years?
The kit would include 4 feet of Vac hose, grommet, drilled out freeze plug, valve and fitting on the intake with barb. Then if you want the Deluxe kit, you would get a 3/8" stainless tube with proper fitting on the intake. I already know about the intake that has the offset and angled hole. I am hoping that is the only one GM did that way? Thanks!
