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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Dec 2014 Posts: 678 'Bolter | | 'Bolter Joined: Dec 2014 Posts: 678 | I'm just hooking up the vacuum line to my OG windshield wiper motor. The simplest method is to run a T off the brake booster line. I can't imagine that would cause any issues but I thought I'd ask the experts.
1951 Chevy Panel Truck
| | | | | Joined: Mar 2010 Posts: 10,294 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,294 | As long as your brake booster has a working check valve, you should be good to go. That check valve is to allow for the booster to retain its function for one more stop in case the engine stops running. It will do the same thing when the wipers are on, doing their intermittent wiper thing. 
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
| | | | | Joined: Dec 2014 Posts: 678 'Bolter | | 'Bolter Joined: Dec 2014 Posts: 678 | Thanks Carl. Now that you mention it, I've seen some check valves have T's branching off from them, presumably for other vacuum accessories. Maybe I should try one of those.
1951 Chevy Panel Truck
| | | | | Joined: Dec 2010 Posts: 21 New Guy | | New Guy Joined: Dec 2010 Posts: 21 | Just as an added safety precaution, try adding a vacuum chamber ( tin can or bulb seen on so many vehicles) for a little extra reserve for initial starting or accidental dying in the rain (Murphy's Law), I did that with my 54 (hid it under the dash) and it made a world of difference, just dont get too big of a chamber.
Last edited by dwragon; 07/12/2020 11:04 PM.
| | | | | Joined: Dec 2008 Posts: 1,922 'Bolter | | 'Bolter Joined: Dec 2008 Posts: 1,922 | I'll just leave this for the experts. | | | | | Joined: Feb 2004 Posts: 29,837 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,837 | A piece of PVC pipe a couple of feet long with caps glued onto both ends and a rubber grommet fitted into one end cap that will accommodate a brake booster check valve makes a good reservoir. Plumb a separate 3/8" or 1/2" vacuum hose to the brake booster and the vacuum trapped in the pipe will allow a couple of brake applications and/or a smooth shift of a 2-speed rear axle after the engine quits. A pipe up to about 4" in diameter fits nicely inside a frame rail under the cab.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Mar 2019 Posts: 1,003 'Bolter | | 'Bolter Joined: Mar 2019 Posts: 1,003 | Another good trick. Ill keep that 1 in mind. | | |
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