Short answer is typically yes for wipers to pull vacuum from the intake manifold, that is also the port used for a pcv if you go that route (which might be a good idea).
Yes both, if the pcv valve is sized correctly it only draws modest pulses. As traditional with vacuum wipers they do not work at full throttle like when climbing a hill, with or without the pcv.
I installed a vacuum reservoir under the dash (made it from an empty propane canister - see the attached pic) in the hope that the reservoir would have enough vacuum to carry the wiper thru the full throttle events. I haven't tried it out yet. My fallback position is to install a fuel/vacuum pump. I just finished rebuilding one of those.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
Looks great Kevin. I've had a 5 gallon vacuum tank off an old 43' flatbed trailer in the shop for a few years. Plan was to mount it under the truck on the frame for the wipers. However I got to thinking about how long it'd take to replenish the vacuum if I ever used all the stored vacuum on a big hill. And the tank still waits on me to do something, maybe buy an electric pump to supplement the trucks vacuum? Or copy your tank, I'm thinking that's a better option.
