The Stovebolt Site Forums The Shop Area Engine Shop PCV

My 54 is running stock,235 with th350trans. I want to add pcv with freeze plug to draft tube hole in block. Will there be enough vacumn to shift trans? Thanks much.

lutrexen,

Maybe I don't understand your question. Any PCV additions wouldn't, or shouldn't affect engine vacuum as it pertains to a vacuum modulator or vacuum advance unit. I think this is right!

Stuart

Depends where you plumb the outlets into. For the PCV use the plug on the side of the intake. The model B carb has no full vacuum outlet. You may want to drill a hole in the spacer & tap it for 1/8 pipe thread. I wonder if you might suck up oil with the pcv valve way down there.

Automarc is right, Wrenchbender is right, but his wondering has wandered wrong. I believe the PCV requirements went into effect in 1963 and were retro to 1952. I worked in gas station that was also a smog station in 64. I installed 3-4 PCV systems on 235s. There were several approved kits available as my not so good memory recalls. One kit eliminated the road draft tube or blocked it off. The a hole was cut in the valve cover for the PCV and a hose run to the air cleaner. Another installed the the PCV were the road draft tube was and ran a hose over the valve cover to the air cleaner or manifold. I didn't like that one, who wants to have to remove and extra hose to adjust the valves. There may have been another one with a spacer for under the carb. The spacer was common for F*rds.

Another thought is on my 63 truck with a 292, I have power brakes. The power brake hose to the manifold has a 'T' in for the PCV. The 'T' is marked specifically for the PCV and brake booster. As I understand it there is some kind of reduction to the PCV.

Larry