Rochester 4G-anyone know..

[LT1 Burb]

Originally Posted by Chevystep

What PCV valve screws into the rear vacuum port for routing to the road tube breather? I think the originals were an AC CV590C, but they ain’t made those in a while...or should I just get a generic in line 3/8” PCV and run that between the road tube and a hose fitting on the carb? My oil fill cap is vented...

It could have been a brass block with 3/8” male pipe to carb and then 2 fittings on brass block.