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What did you get done on your Bolt today? - 2021 and later
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Stovebolt driving report
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Who uses their truck as a truck - 2021 and later

Re-started this thread. Three pages and counting.

Bolters in the Side Lot
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#1477059 Thu Dec 01 2022 02:11 AM
Joined: Sep 2011
Posts: 2,729
L
Lugnutz Offline OP
'Bolter
This item is certainly NOT for everyone.
I have a 1995 Nissan truck with a speedometer that works now and then.
It probably has a bad solder joint somewhere. It works for a while and then it goes to zero for a while.
So I bought a dashboard digital display GPS speedometer. The screen has large numbers and many functions besides the speed. It was around $29 on Amazon and it actually works pretty well. All it needs is a 12V cigarette lighter socket for power.
I mention this because I know some folks here have an old truck with a nonfunctioning speedometer and you might like to get one of these. Simply unplug it and store it in the glove box at the next car show and nobody will ask questions (if such a thing might embarrass you).
Mine was reading 2 MPH higher than my phone GPS app so I read the instructions and calibrated it to read correctly.
Photo attached shows minutes of driving time as 8, distance is 4.5 miles and speed is 63. Since that picture Iโ€™ve changed the screen to show the time of day instead of the driving time. Iโ€™m pleased.

Attached Images
Last edited by Lugnutz; Thu Dec 01 2022 02:18 AM.
Lugnutz #1477060 Thu Dec 01 2022 02:34 AM
Joined: Feb 2016
Posts: 874
7
'Bolter
I'm going to look into that since I'm changing my single speed rear axle gears to a 2 speed, my current original speedometer is not accurate anyway due to larger than factory tires.


1957 Chevrolet 5700 LCF 283 SM420 single speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
Lugnutz #1477061 Thu Dec 01 2022 02:35 AM
Joined: Sep 2009
Posts: 1,400
G
Gearhead, Moderator for The Swap Meet and Co-Moderator of General Truck Talk
Lugnutz,

Is that device mounted via a suction cup to the windshield???

Got a source for it???

I like the thinking behind temp install and packing away for show and tell time. ๐Ÿ‘


Dan

1951 Chevy 3 window 3100 (My Grandpa's hunting truck)
1966 Chevelle (Wife's Hot Rod)
2013 Chevy Silverado (Current daily driver)
US Army MSG Retired (1977-1998)
Com Fac Maint Lead Tech Retired (1998-2021)

Finely time to get to work on my Grandpa's (now mine) truck!
Gdads51 #1477062 Thu Dec 01 2022 02:39 AM
Joined: Sep 2011
Posts: 2,729
L
Lugnutz Offline OP
'Bolter
Originally Posted by Gdads51
Lugnutz,

Is that device mounted via a suction cup to the windshield???

Got a source for it???

I like the thinking behind temp install and packing away for show and tell time. ๐Ÿ‘

Hereโ€™s a link. Amazon link for GPS speedo I bought. [smile.amazon.com]

Suction cup to windshield or sticker on dash options. About the size of a large cell phone.
Does Km or MPH. No fees to pay.

Lugnutz #1477063 Thu Dec 01 2022 02:52 AM
Joined: Sep 2009
Posts: 1,400
G
Gearhead, Moderator for The Swap Meet and Co-Moderator of General Truck Talk
Thanks for the info.

Thinking I will look into this a bit further.

Thanks again! ๐Ÿ‘


Dan

1951 Chevy 3 window 3100 (My Grandpa's hunting truck)
1966 Chevelle (Wife's Hot Rod)
2013 Chevy Silverado (Current daily driver)
US Army MSG Retired (1977-1998)
Com Fac Maint Lead Tech Retired (1998-2021)

Finely time to get to work on my Grandpa's (now mine) truck!
78buckshot #1477068 Thu Dec 01 2022 03:38 AM
Joined: Oct 2021
Posts: 1,627
O
'Bolter
Originally Posted by 78buckshot
I'm going to look into that since I'm changing my single speed rear axle gears to a 2 speed, my current original speedometer is not accurate anyway due to larger than factory tires.

You can buy a speedometer ratio adapter to get your dash gauge in sync with the transmission after you change tire size and rear end, etc. Compare the gauge reading with actual speed from a GPS or mile marker. Determine percentage that it's high or low and order the adapter with the correct ratio.

It threads into the tranny and the cable threads into it and your gauge will then read correctly.

http://www.clarkbrothers.net/ratio_adapters.html

https://transmissioncenter.net/shop/ratio-adapter-other-ratios-available-call-jim-1-888-2012066/

Last edited by Otto Skorzeny; Thu Dec 01 2022 04:03 AM.

1939 Packard Standard Eight Coupe (The Phantom)
1950 Chevrolet 3100 (Ol' Roy)
1956 Cadillac Coupe de Ville (The Bismarck)
1966 Oldsmobile Toronado (The Purple Knif)
1966 Ford Mustang (Little Red)
1964 Ford Galaxie 500 coupe
1979 Ford F-100
1976 Ford F-150 (Big Red)
1995 Ford F-150 (Newt)
Lugnutz #1477074 Thu Dec 01 2022 10:04 AM
Joined: Jun 2021
Posts: 140
S
'Bolter
If you want to go that route on an old truck, this here probably blends in much better,
and if you resurface it to match the original appearance, most folks would probably never notice.

Frank

Attached Images
Lugnutz #1477076 Thu Dec 01 2022 11:17 AM
Joined: Feb 2016
Posts: 874
7
'Bolter
You can buy a speedometer ratio adapter to get your dash gauge in sync with the transmission after you change tire size and rear end, etc. Compare the gauge reading with actual speed from a GPS or mile marker. Determine percentage that it's high or low and order the adapter with the correct ratio.

It threads into the tranny and the cable threads into it and your gauge will then read correctly.

http://www.clarkbrothers.net/ratio_adapters.html

https://transmissioncenter.net/shop/ratio-adapter-other-ratios-available-call-jim-1-888-2012066/[/quote]Thanks Otto for the added info, my truck already has a ratio adapter on the tranny so I know that everything will fit, I should try running it without the current adapter and see what my speedo reads. One thing I didn't want to try to add is the 2 speed vacuum actuated adapter under the dash, I can barely get the speedo cable attached as it is!


1957 Chevrolet 5700 LCF 283 SM420 single speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
Lugnutz #1477084 Thu Dec 01 2022 01:20 PM
Joined: Sep 2010
Posts: 1,913
W
back yard wrench turner
I've bought 2 replacement 'used' speedometers for my truck. I've bought a replacement gear adapter for it also.
The speedometer still doesn't work.

I now have a speedometer app for my cell phone that I use. It's not because I speed, I just like to know how fast I'm driving to keep above the 40 mph minimum on the Interstate. smile

Last edited by Wayne67vert; Thu Dec 01 2022 01:20 PM.

Wayne

When I die, I hope she doesn't sell everything for what I told her I paid for it!

1938 1-Ton Farm Truck
-30-
Stovebolt Gallery Forums
Lugnutz #1477090 Thu Dec 01 2022 01:49 PM
Joined: Aug 2019
Posts: 177
D
'Bolter
I tried every color gear in a tranny cable kit and ended up back at the white one po had in it. Mileage indicator was way off with the others. Not that it means much on these old trucks considering the engine and drive train swaps that happen. My speedometer is off by 30 mph on average. I might bend needle the next time I have speedo out if dash. I purchased a magnetic based phone holder (they sell them for use on lockers at the gym) and stick it on the driver side corner of dash. With free iPhone app, Speedometer, I have a speed, time, temperature, weather, and maybe a compass. You can double tap screen for HUD view if you like the reflection in your windshield.

Attached Images
205402E9-A838-4147-8CBE-5C67D62BAB2B.png (725.09 KB, 46 downloads)
Horizontal
0F5AA7D7-A32D-40F2-A21D-9E4EC8FE4D07.png (707.03 KB, 46 downloads)
Vertical
Last edited by DES57; Fri Dec 02 2022 04:39 PM. Reason: Added phone app photos

1957 Chevy 3200
PS, A/C, Tilt column, Rebuilt 350, Rebuilt TH350, Reupholstered Bench Seat, sound proof/insulated, LED headlights/taillights
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