My 57 car has a PCV valve setup installed at the rear of a late style valley cover. The stock 3 sided oil deflector is still on the underside of the cover.
Regulars here or readers of Y--Block Magazine are probably aware that there can be issues with these setups. Here's another one.- I haven't driven my setup a lot & it seemed to be working reasonably well without noticeable issues. Not until the other day, when I was moving at about 50 mph, when I Iifted my foot off the accelerator, there was a fairly noisy "sucking sound". Step back on the throttle, gone, off the throttle there it was again. So, went home & lifted the hood & with the engine running, went to the the throttle off & on. There it was..the noise is in the PCV setup. It seems that oil residue had gotten into the valve area & the Grommet in the cover was lifting somewhat & causing the noise. The flange of the valley cover there, is rather shallow & that grommet, SPC 7205 does not fit tight enough "vertically" to avoid a problem when oil soaked. So, it needs a different Grommet & if the valley cover was off, I'd be looking at some type of improvement in the oil control.. My first thought is that maybe a vertical sheet metal piece hanging in front of the open side of the box, say  about 1/4" out & down lower than the box might help?  Suggestions?.. And for the record the valve is #2072 which was spec'd for a smaller V-6 engine.. Thanks 


Paul