any one kno what size the hose it that goes from the air cleaner to the valve cover into that lil elbow?

 

I have 1/2" hose on mine.

 

id or od?

 

Oh, Sorry. 1/2" OD. Mine are a little bigger than stock, too. I also put 1/2" hose on the rear valve cover grommet to the intake manifold source. Trying to get it to breathe better and cut down on the oil in the air intake. It works pretty good for the most part. I still get a little oil in there if I drive for hours on end at highway speeds.