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Mod | | | Forums66 Topics128,049 Posts1,055,546 Members48,425 | | 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
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Oct 2023 Posts: 74 'Bolter | | 'Bolter Joined: Oct 2023 Posts: 74 | For my GM 9600/350, I want to plumb a vacuum gauge onto the dash so I know what my braking capabilities are. The variable I'm curious about is range of the gauge I need. What is the highest amount of vacuum I should expect to see on a 261?
Last edited by klhansen; 08/08/2024 5:56 AM. Reason: Corrected spelling of “gauge”
| | | | | Joined: Jan 2022 Posts: 2,440 'Bolter | | 'Bolter Joined: Jan 2022 Posts: 2,440 | Moving at speed, in gear and foot off the throttle, well into 20-25 inches of Mercury.
(Can you say "Mercury" on this web site?)
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
| | | | | Joined: May 2015 Posts: 11,017 Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums | | Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums Joined: May 2015 Posts: 11,017 | (Can you say "Mercury" on this web site?) Bill, I’d say you’re OK. The Liquid Metal was around eons before that vehicle brand. 
Kevin 1951 Chevy 3100 work truckFollow this saga in Project JournalPhotos 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. | | | | | Joined: Feb 2016 Posts: 1,982 'Bolter | | 'Bolter Joined: Feb 2016 Posts: 1,982 | I think most gauges go to 0" - 30"
Last edited by 78buckshot; 08/08/2024 10:32 AM.
1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
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