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#1 |
Registered User
Join Date: Mar 2013
Location: Marquette michigan
Posts: 828
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Re: 67-72 Electric speedo
Does the speedo read correctly all the way down to 0 once it starts to work?? If so your speedo needle may be sticking to the rest pin. Mine did this and i had to remove the orange paint i put on the needle. I cleaned it off of the area of contact (on the rest pin) and you can hardly notice the difference.
Look at post 380 on page 16 of this posting for my issue!! Last edited by 68c10airstream; 03-23-2017 at 06:50 PM. |
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#2 | |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
Quote:
If the needle isn't moving at all when you take off, but then when you get to 35mph it jumps to that speed, then like 68c10airstream said, it could be the freshly painted needle sticking to the stop pin. I too have had this problem, you will need to scrape the paint off in that area.
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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#3 |
C10 Collector
Join Date: Oct 2003
Location: Baton Rouge, LA
Posts: 417
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Re: 67-72 Electric speedo
I did not paint the needle to keep the patina but I did randomly put it on.
Will fix and report back! Thanks!
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///Ryan 1972 Chevy C-10-Bagged, Blown LT1, 700r4, Suicide Doors 1967 GMC- SC & Cam'd 4.8, built 4l80, 3200 stall, posi, 4.10 1967 Chevy LWB- 454 and patina 1971 Blazer - Rusty 1968 Crewcab project |
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#4 |
Registered User
Join Date: Jun 2011
Location: Ocoee, FL
Posts: 25
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Re: 67-72 Electric speedo
I am interested in one of these kits.
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1972 Chevy C10 Shortbed/Wood Starting LS1 GTO Swap |
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#5 |
Registered User
Join Date: Apr 2017
Location: Elizabeth
Posts: 40
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Re: 67-72 Electric speedo
This is the best find of the year for me, Got stuff yesterday, and started on it today.
![]() ![]() Some info for the clusters, 94 Is the one year only for the s10 it goes to 85, However the stepper motor assembly is the exact same from 94-97 for Speedo only clusters. IIRC all that is needed to calibrate a 94 cluster for the 100mph sweep is a change of 1 resistor, I will have conformation when I get mine put together when I can piggy back it off my truck and verify with the truck speedo and scan tool. |
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#6 |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
Caustik, are you trying to use a '94 speedometer? If so, I don't think it will work. I have tried using one of those, but could never get it to be as accurate as the '96. I don't know what resistor you're going to change on it, but don't thonk it's going to be that simple since the older speedobused a circuit board that was about half the size of the newer one. If it's an availability problem, I can probably get you one.
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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#7 | |
Registered User
Join Date: Apr 2017
Location: Elizabeth
Posts: 40
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Re: 67-72 Electric speedo
Quote:
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#8 |
Registered User
Join Date: Jan 2009
Location: valparaiso,in
Posts: 730
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Re: 67-72 Electric speedo
I have a few questions on wiring.
1. Do you have a part number for the hi beam indicator? 2. What connector did you use to wire it into the main harness? 3. I have no idea how to follow the printed circuit. So how do I wire this thing 4. Do I have to do the volt gauge swap or will the factory one work? Thanks
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Eric 70 CST10 long bed in pieces also factory air and cruise(the project) 18 Silverado crew cab 5.3 4x4 My build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=402166 Last edited by ewoody625; 01-04-2018 at 06:58 AM. Reason: Adding to question |
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#9 | |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
Quote:
2 - you can use what ever you want, but I like these. http://kwikwire.com/15-position-amp-connector-kit/ 3 - To follow the printed circuit board, you just have to look at it. The gauges are bolted to the printed circuit, the 12v powers will all be hooked together, so by following it, you should see it. The grounds are usually grounded to the tin, and the sender wires are separate. Just follow the printed 'wire' from the gauge back to the original dash plug so you know what each wire does. I really cant explain it any more than that, but if you cant figure it out, you may need to find someone in your area that can either wire it for you, or at least help you out with it. 4 - You don't have to put a volt gauge in, but there really isn't any good way to get the original ammeter to work with the LS alternator, so that's why I change them. If you can live without that gauge then you don't need to do anything.
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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#10 |
Registered User
Join Date: Jan 2009
Location: valparaiso,in
Posts: 730
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Re: 67-72 Electric speedo
[QUOTE=ls1nova71;8152170]1 - I don't have a part number, but it was just a 12v LED that I picked up at Radio Shack.
2 - you can use what ever you want, but I like these. http://kwikwire.com/15-position-amp-connector-kit/ 3 - To follow the printed circuit board, you just have to look at it. The gauges are bolted to the printed circuit, the 12v powers will all be hooked together, so by following it, you should see it. The grounds are usually grounded to the tin, and the sender wires are separate. Just follow the printed 'wire' from the gauge back to the original dash plug so you know what each wire does. I really cant explain it any more than that, but if you cant figure it out, you may need to find someone in your area that can either wire it for you, or at least help you out with it. 4 - You don't have to put a volt gauge in, but there really isn't any good way to get the original ammeter to work with the LS alternator, so that's why I change them. If you can live without that gauge then you don't need to do anything.[/QUOTE Ok Thanks for the info I'm gonna try to work on it tomorrow I'll let you know if I have any issues
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Eric 70 CST10 long bed in pieces also factory air and cruise(the project) 18 Silverado crew cab 5.3 4x4 My build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=402166 |
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#11 |
Registered User
Join Date: Jan 2009
Location: valparaiso,in
Posts: 730
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Re: 67-72 Electric speedo
Another question... what is the difference between the square body volt gauge and the 67-72? I started shopping for a gauge and they look the same to me, as far as the back of the gauge goes. Also, I thought I saw a link to a thread on doing that swap but can't find it now, am I making that up? Thought I would find the answer to my question there. Thanks
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Eric 70 CST10 long bed in pieces also factory air and cruise(the project) 18 Silverado crew cab 5.3 4x4 My build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=402166 |
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#12 | |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
Quote:
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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#13 | |
Registered User
Join Date: Jan 2009
Location: valparaiso,in
Posts: 730
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Re: 67-72 Electric speedo
Quote:
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Eric 70 CST10 long bed in pieces also factory air and cruise(the project) 18 Silverado crew cab 5.3 4x4 My build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=402166 |
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#14 |
Registered User
Join Date: Jul 2018
Location: San Jose, Ca
Posts: 3
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Re: 67-72 Electric speedo
Are these kits still available? If so I’ll take a stencil and a back cover template. Thanks
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#15 |
Registered User
![]() Join Date: Mar 2017
Location: yucca valley
Posts: 239
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Re: 67-72 Electric speedo
I'll take a set also
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#16 | |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
Quote:
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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#17 |
Registered User
Join Date: Jul 2018
Location: San Jose, Ca
Posts: 3
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Re: 67-72 Electric speedo
Got mine already. Great stuff. Super fast shipping
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#18 |
Registered User
Join Date: Oct 2012
Location: Miami, Florida
Posts: 917
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Re: 67-72 Electric speedo
trickey, trickey, trickey. this not fun.
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#19 |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
No, that's not it. It goes more like.....It's Tricky to rock a rhyme, to rock a rhyme that's right on time
It's Tricky, it's Tricky (Tricky) Tricky (Tricky) It's Tricky to rock a rhyme, to rock a rhyme that's right on time It's tricky, tricky (Tricky) tricky ![]() ![]() ![]() But seriously, what is your issue?
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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#20 | |
Registered User
Join Date: Feb 2012
Location: Ruskin Florida
Posts: 4,560
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Re: 67-72 Electric speedo
Quote:
On a more serious note... I have not done my swap yet and am out a few months due to moving etc. I am very thankful you fellas are figuring this out though. I may have missed it in here but when this is done and working right - I can still have my stock tach as well? Oh and you are very right! It's tricky! So you are right on time... ![]()
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70 swb 4x4 406sbc 700r4 203/205 d60/14blt locker yadda yadda http://67-72chevytrucks.com/vboard/s...88#post6935688 Yeller 72 Blazer 2wd conversion project "No Daggum Money" http://67-72chevytrucks.com/vboard/s...d.php?t=550804 LS1-T56 3.73 LSD super budget build Blanco-2014 Sierra SWB https://67-72chevytrucks.com/vboard/...d.php?t=810350 |
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#21 |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
Yes, you can still have the factory tach, you just have to trim one side of the face of it slightly to clear the speedo. It doesn't show when installed so you will never notice it. I will look and see if I can find a pic.
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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#22 |
Registered User
Join Date: Oct 2017
Location: Redding California
Posts: 3
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Re: 67-72 Electric speedo
I am having issues rubbing the numbers of the plastic face using Mothers mag cleaner. Any tips on how to rub those off?
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#23 |
A guy with a truck
Join Date: Sep 2005
Location: Germany, for now
Posts: 5,920
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Re: 67-72 Electric speedo
Use a more aggressive compound, then polish it out with mothers. The blue magic or whatever worked for me. Barkeeper’s Friend works magic, too
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-Chris Instagram _elgringoloco_ '70 Short-Wide How to: Ruin a perfectly good C10 ‘70 Blazer ConversionHow To: Ruin a Perfectly Good 4wd '72 Highlander How To: Ruin a Perfectly Good K/5 (SOLD) '72 Blazer 2WD How to: Ruin a perfectly good Blazer (SOLD) '05 Yukon Daily Driven (not so stock) Yukon (SOLD) ‘07 Yukon Denali (daily) Members met list: SCOTI, darkhorse970, 67cheby, 67cheby'sGirl, klmore, porterbuilt, n2billet, Fastrucken, classicchev, Col Clank, GSFMECH, HuggerCST, Spray-Bomb, BACKYARD88, 5150, fine69, fatbass, smbrouss70, 65StreetCruiser, GAc10boy |
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#24 |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
I would just try rubbing harder, with a finger tip in a towel and the Mothers on it. Rub in one spot until it comes off, it eventually will.
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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#25 |
A guy with a truck
Join Date: Sep 2005
Location: Germany, for now
Posts: 5,920
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Re: 67-72 Electric speedo
Use a more aggressive compound, then polish it out with mothers. The blue magic or whatever worked for me. Barkeeper’s Friend works magic, too
__________________
-Chris Instagram _elgringoloco_ '70 Short-Wide How to: Ruin a perfectly good C10 ‘70 Blazer ConversionHow To: Ruin a Perfectly Good 4wd '72 Highlander How To: Ruin a Perfectly Good K/5 (SOLD) '72 Blazer 2WD How to: Ruin a perfectly good Blazer (SOLD) '05 Yukon Daily Driven (not so stock) Yukon (SOLD) ‘07 Yukon Denali (daily) Members met list: SCOTI, darkhorse970, 67cheby, 67cheby'sGirl, klmore, porterbuilt, n2billet, Fastrucken, classicchev, Col Clank, GSFMECH, HuggerCST, Spray-Bomb, BACKYARD88, 5150, fine69, fatbass, smbrouss70, 65StreetCruiser, GAc10boy |
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