Understand that a pcv is a controlled vacuum leak. Some more than others. I think a great setup would be one that included an oil separator, so you don't wet down the intake manifold with oily vapors. Picking the wrong valve can reduce the vacuum signal to the carb and create a whole host of A/F problems. IMHO

Last edited by sstock; 03/17/2018 1:56 PM.
1953 Chevrolet 3100
261 cu inch, sm420, 3.55 rear, torque tube still,omaha orange, still 6 volt, RPO green glass, side carrier spare, all done
In the DITY Gallery
Video of the 261 running

1964 GMC 1000
305 Big Block V6, sm420, the next cab off restoration