I am posting this on an old thread just to keep the info in one less place
I installed a PCV system on my ‘46 w/ ‘54 235, it was a few hours work once I had all the material. It a reversible process as I sourced new critical parts instead of modifying existing pieces… Used a oil fill tube and cap from a ‘63 corvette ( bought new at Eckler), pulled the existing draft tube out and hammered in the new tube w/ loctite, drilled the air cleaner and installed a grommet (I run a paper element), installed a new oil fill cap in the valve cover (Napa thm 7031691) which came with 2 rubber bushings, JB welded the valve cover slots, put a tee in the intake manifold vacuum port and ran 3/8 copper tubing from PCV valve. Taped over the oil fill hole and vacuum tested at the dipstick, 3”hg, seems on spec to me on a relatively fresh engine…. Used ACDelco PCV 19310783 see attached pix
Last edited by Hanks custodian; 03/10/20244:02 AM.