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09-19-2024, 05:38 PM
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#1 |
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Registered User
Join Date: Mar 2018
Location: Colchester IL
Posts: 326
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Is this a speed warning?
Was wondering what this was? It looks different from the other speed warning speedometers I have seen. Possibly off of a larger truck? It was on a 3/4 ton GMC.
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09-19-2024, 06:25 PM
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#2 |
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BlahBlahBlah
Join Date: Feb 2002
Location: Wa.
Posts: 20,044
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Re: Is this a speed warning?
Not speed warning. Looks like someone put in a vacuum gauge.
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09-19-2024, 06:46 PM
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#3 |
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Registered User
Join Date: Mar 2018
Location: Colchester IL
Posts: 326
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Re: Is this a speed warning?
Thats kind of what I thought but the gauge fits into the bezel with what looks like a twist on lens that was missing. The bezel looks to be stock but is different than any other that I have seen. The speedometer has that smaller speedometer within itself which I have never seen before either.
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09-19-2024, 07:07 PM
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#4 |
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Senior Member
 
Join Date: Dec 2009
Location: TN.
Posts: 8,454
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Re: Is this a speed warning?
Here's a picture in the link below of the factory setup.
Link: https://67-72chevytrucks.com/vboard/...=speed+warning
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________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build |
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09-19-2024, 07:37 PM
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#5 |
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BlahBlahBlah
Join Date: Feb 2002
Location: Wa.
Posts: 20,044
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Re: Is this a speed warning?
Looked at your pic again. I have no idea what the one is at bottom of speedo.
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09-19-2024, 08:06 PM
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#6 |
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Roadtrip!
Join Date: Feb 2003
Location: Grand Rapids MN
Posts: 13,801
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Re: Is this a speed warning?
Looks like some aftermarket gauges someone added... Not factory on either.
__________________
67 gmc custom lwb dakota truck. Sold...And bought back 69 swb 4x4 project (in progress) 70 c-10 lwb texas truck 70 4x4/BB/bkts/posi/tach(retired) 70 swb (wifes) 70 jimmy camper 71 K-5 factory 2wd 71 cheyenne 4x4/tach/posi/ plow rig 71 Cheyenne20 BB, buckets, tach, tilt, 4 speed 72 jimmy CST wyoming rig 72 jimmy Colorado rig 72 lifted texas 4x4 3/4 ton burb 65 fury conv. 383/auto 65 chrysler 300 "L" 413 auto |
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09-19-2024, 08:47 PM
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#7 |
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Registered User
Join Date: Oct 2008
Location: Marianna Arkansas
Posts: 7,280
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Re: Is this a speed warning?
My 68 GMC had the speed warning but no gauges. I have not heard or seen that before has anyone else? Jim
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09-19-2024, 09:21 PM
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#8 | |
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Born Psycho
Join Date: Feb 2001
Location: brentwood,cal,usa
Posts: 4,948
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Re: Is this a speed warning?
Quote:
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jerry moss 72 cheyenne super K20- tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,tow hooks,bumper guards,toolbox,aux. fuel tank,posi front and rear,plus other goodies!!! SOLD 69 suburban K20-tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,4 inch all spring lift,4 speed, 14 bolt full floater, dana 44 HD,warn winch,posi front and rear,tow hooks,plus other goodies. 73/80 chevy/gmc K20 SB400,turbo 400,205,tilt,a-c,gas hog. 77 K/5 cheyenne blazer-daily driver/beater. SON HAS IT NOW BRENTWOOD,CALIFORNIA |
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09-19-2024, 10:49 PM
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#9 |
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Senior Member
Join Date: Oct 2009
Location: Godley, TX
Posts: 17,976
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Re: Is this a speed warning?
I'm guessing those gauges spent some time abroad and that's a km/hr conversion (1 mph ~ 1.6 km/hr).
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09-19-2024, 11:00 PM
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#10 | |
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Senior Member
Join Date: Jun 2022
Location: San Ramon,CA
Posts: 625
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Re: Is this a speed warning?
Quote:
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1970 C10 Custom longbed 350/350 Code:
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09-19-2024, 11:25 PM
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#11 |
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Registered User
Join Date: Mar 2018
Location: Colchester IL
Posts: 326
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Re: Is this a speed warning?
Tomorrow I will check on what's up with the speedometer. What makes me think this is a stock item is that on the vacuum gauge the bezel has a raised ridged cast in it that the vacuum gauge actually fits in. Then it looks like a removable lens "missing" that goes over the top of it. unless the whole bezel is aftermarket that was sold with the vacuum gauge as a kit.
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09-20-2024, 08:01 PM
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#12 |
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Post Whore
Join Date: Feb 2016
Location: Portland Oregon
Posts: 11,413
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Re: Is this a speed warning?
Maybe it's out of a big truck. I'm pretty sure GM used those dashes through the mid 70's or later. You might try posting it in the Heavy Haulers section. Maybe one of the truck experts know what you have.
__________________
Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help.  RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 |
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09-20-2024, 10:35 PM
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#13 |
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Registered User
Join Date: Mar 2018
Location: Colchester IL
Posts: 326
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Re: Is this a speed warning?
Well I took it apart and as far as I can tell the bezel was drilled out and the vacuum unit was added and glued in. It looks like this may have been a stand alone unit that was Intergrated into the bezel. It was done very well and almost looks like it could have been a factory piece. As far as the speedometer no idea. No needle inside or hooked to anything. But it does go to 55 then changes color on the sweep.
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