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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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Jun 2014 Posts: 152 'Bolter | | 'Bolter Joined: Jun 2014 Posts: 152 | easy solution to wrong speedometer gear issue..make your own speedometer display. i used an iphone app to tell me my speed then made a mark corresponding to needle position on the speedo glass at 10k/h intervals. i then transferred those marks to a piece of tracing paper which i scanned, uploaded to my pc and then photoshoped before printing it out on a color printer (adjusting the scale until it was the correct diameter). even added a little chevy logo i got off the net. cut center hole out and then put it behind the glass in the original display. works a charm, and passed inspection https://drmike.smugmug.com/Other/Truck/i-GfhTGGB/Aps if you dont have a scanner you can just hold the tracing paper to the pc screen and copy the design using MS Paint through it
Last edited by Drmike; 01/18/2017 1:07 AM.
| | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | A brilliant solution. Looks good. | | | | | Joined: Dec 2001 Posts: 14,522 Moderator: Welcome Centre, Southern Bolters, Legion Hall | | Moderator: Welcome Centre, Southern Bolters, Legion Hall Joined: Dec 2001 Posts: 14,522 | Ditto what cletis said.
Can't find the info but seems I remember a thread, or someone local, telling me a 68-72 speedo can be converted to an AD speedo with very little work and pretty much by doing the same thing you did......I'm still looking for that info.
| | | | | Joined: Aug 2005 Posts: 6,377 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,377 | Back before the days of speed monitor displays that tell you what your speed is as you drive by like this, I'd have a friend drive at a set speed then see what my speedo said. If he was driving 60 and my speedo said 55 I'd just keep in mind that my speedo reads 5 MPH slow. These days I can use the speed monitor to compare actual speed to displayed speed.
Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.
| | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | Drmike,
that speedometer face is stunning! So did it have to read in km/hr for the inspection?
I did a similar thing with my 1 Ton but kept the original look. My error was crested by a rearend change to 4:10 gears. | | | | | Joined: Apr 2005 Posts: 2,832 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,832 | WOW,
Great idea. Now if this old dog just had an I-phone, scanner, printer, AND knew how to use them. The world now belongs to the young---thank God.
Evan
| | | | | Joined: Feb 2004 Posts: 29,836 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,836 | Virtually all GPS units display speed, and even in the 6 volt trucks a tiny 12 volt motorcycle battery will last for weeks between recharges if it only powers the GPS, cell phone charger, etc. A solar trickle charger will keep it powered up for practically forever. My Garmin lets me select between MPH and KPH with a simple programming change.
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: Jun 2014 Posts: 152 'Bolter | | 'Bolter Joined: Jun 2014 Posts: 152 | WOW,
Great idea. Now if this old dog just had an I-phone, scanner, printer, AND knew how to use them. The world now belongs to the young---thank God. been many decades since i was last called young lol old dogs can learn new tricks....its just painfully harder and slower  | | | | | Joined: Aug 2005 Posts: 6,377 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,377 | Jerry, your GPS will work fine on 6 volts I've been told. AFTER I bought & installed a 6-12v stepup so that I could run mine in the '38, a thread over on the VCCA site advised that they work just fine on 6v.
Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.
| | | | | Joined: Jan 2010 Posts: 378 Shop Shark | | Shop Shark Joined: Jan 2010 Posts: 378 | What a great idea! I'm facing the same problem now. Either way would solve my problem. Thanks to both of you. | | | | | Joined: Jun 2014 Posts: 152 'Bolter | | 'Bolter Joined: Jun 2014 Posts: 152 | Drmike,
that speedometer face is stunning! So did it have to read in km/hr for the inspection?
I did a similar thing with my 1 Ton but kept the original look. My error was crested by a rearend change to 4:10 gears. hi, yes,km/h plus inspection here requires a rolling road display accuracy verification at 40km/h so it was only really vital i got the 40km/h part of the display aligned correctly to the needle. unfortunately as the test is a rolling road test gps displays are not allowed so had no choice but to rig up something mechanical. if i ever change tyre sizes i can just print out a new display or rotate the current one a bit so at least the 40km/h is correctly indicated nobody laughed at the fact my speedo goes up to 160km/h lol | | |
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