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Mod | | | Forums66 Topics128,162 Posts1,056,938 Members48,458 | | Most Online14,466
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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Jul 2015 Posts: 203 'Bolter | | 'Bolter Joined: Jul 2015 Posts: 203 | I'm making a swap from the old huck brakes to 4-wheel discs and a modern booster master cylinder setup from Hollister Road. My engine is a 235 with a stock manifold and Carter YF carb from a early 70's Ford 300 c.i. As far as vacuum goes, I had already done away with vacuum wipers and have electric wipers. So I have no vacuum lines except for the distributor. Will the 235 make enough vacuum for the new master cylinder and do I tee into the line for the distributor for vacuum?
1953 GMC 1-Ton Pickup with 350 and 700R4
| | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | Use the manifold vacuum port where the wiper tube used to be. | | | | | Joined: Feb 2004 Posts: 29,859 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,859 | Use a 3/8" diameter vacuum hose to the booster, and install a vacuum reservoir if possible. I like to make the reservoir from a piece of 3" PVC plastic pipe about 18" long with caps glued onto both ends. It will fit nicely inside the frame rail under the cab, and if you paint it black it almost disappears. Use a T fitting threaded into one end cap and a one-way check valve between the reservoir and the intake manifold to prevent vacuum loss on a long uphill grade, etc. This also works to prevent vacuum wipers from slowing down or stopping when vacuum is low.
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: Jul 2015 Posts: 203 'Bolter | | 'Bolter Joined: Jul 2015 Posts: 203 |
1953 GMC 1-Ton Pickup with 350 and 700R4
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