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#1 |
Registered User
Join Date: May 2012
Location: Faith,NC
Posts: 1,626
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Re: 67-72 Electric speedo
Question for Eric, (or anyone else who knows) - when I push down the reset knob for the trip meter, the locking bar pulls away from the numbers but they do not roll back to zero. I can manually turn them to zero while holding down the rest knob but they don't spin on their own. Is this broken or does the cluster need to have power applied for this to work? I wouldn't think that is the case, but I see no reason for this not working.
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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:
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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 | |
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Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
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To answer your question, you can't put it straight on the clear plastic part because it's not flat, and the openings for the odometer and trip odometer are way too big. Using the S-10 face gives you something to work with. It may seem like some of the pics are out of sequence, but I'm taking them as I go. The face has been put on and taken off several times, so that's why it looks that way.
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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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#4 |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
I just have a few pics for today.
Put the lens back in the bezel, and drill straight down with a drill bit the same size as the trip reset button. This hole may have to be enlarged later if you don't get it exactly in the right sopt, so it's best to use a small bit to start. ![]() Moving back to the face. Drill the holes for the 2 needle stops (knife pointing to hole). Make sure that the hole isn't too big, the needle stop needs to fit snug in the face, NOT the clear plastic part behind it. Also drilled the hole for the high beam indicator, and the 2 little screws that held the original speedo face on. ![]() Needle stop installed at 0 mph, I also put one at 120 mph. ![]() Now comes a part that can be tricky. When you put the face on the clear plastic part, it needs to be shifted slightly 'up' from center like in this pic. This is important or it won't look right. The reason is because of the angle that the s-10 dash was at versus the straight up angle of the 67-72. Trial fit it and hold the cluster straight up at the angle you will veiw it when it's in the truck and you'll see what I mean. You'll be looking slightly down at it, and if the face is up, you'll be able to see the odometer completely. ![]() Once you have it where you want it (after you've double and triple checked whare the face is going to be) Mark the needle stop holes and the screw holes. ![]() Then take the face back off and drill out the holes where the needle stops and screws go. You want them to be bigger than the stops and screws, since they will just push into the face, the holes are just to allow for the part sticking out the back of the face to have somewhere to go. If you look at where they were originally on the S-10 you will see what i mean ![]() This is all for now. I'll post more in a few days.
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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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#5 |
17's too small
Join Date: Oct 2004
Location: Las Vegas, NV
Posts: 335
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Re: 67-72 Electric speedo
Plus looking clooser I see that the S10 clear plastic has mold marks that would definately show through the decal especially since specks of dirt show up.
Sorry to double post, i tried to edit it into my last comment but too much time elapsed.
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#6 |
Registered User
Join Date: Apr 2011
Location: Mustang, Oklahoma
Posts: 2,806
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Re: 67-72 Electric speedo
I just noticed my speedo has a sheetmetal mounting bracket while yours (as seen in post 114, pic 8) the mounting holes are part of the plastic casting. The hole pattern is the same but it may have a little influence on the depth of the gauge once installed. Have you seen or used one like I have? it is from a 97 S10.
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Dan <---(my name) 67 SWB C10 project "GEORGIA"-59 Brookwood 2dr wag...Next project-03 Tahoe 4x4 5.3 family ride-07 Hondur Accord, commuter car |
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#7 | |
17's too small
Join Date: Oct 2004
Location: Las Vegas, NV
Posts: 335
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Re: 67-72 Electric speedo
hard to tell from a face on photo, but they look to be the same depth. I am looking at the small grey gear (between two gold screws) on the right side at it appear to be at the same height as the holes that are used to mount the homemade sheetmetal plate.
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#8 | |
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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#9 |
17's too small
Join Date: Oct 2004
Location: Las Vegas, NV
Posts: 335
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Re: 67-72 Electric speedo
I went to the junk yard this weekend and looked at several S10 speedos. I found several 95-97 that had the metal bracket like pictured above. The last truck (I think it had a 10 of 97 build date) finally had the all plastic mounting bracket. Looking at them side by side they seemed the same but I cant say for sure if all of the electronics were the same.
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#10 | |||
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Join Date: Apr 2011
Location: Mustang, Oklahoma
Posts: 2,806
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Re: 67-72 Electric speedo
Quote:
Quote:
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Dan <---(my name) 67 SWB C10 project "GEORGIA"-59 Brookwood 2dr wag...Next project-03 Tahoe 4x4 5.3 family ride-07 Hondur Accord, commuter car Last edited by 67c10rustbuket; 04-30-2013 at 12:44 AM. Reason: wording.. |
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#11 |
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Join Date: Apr 2011
Location: Mustang, Oklahoma
Posts: 2,806
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Re: 67-72 Electric speedo
Some pics of my progress... just alignment and rough first model stuff.
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Dan <---(my name) 67 SWB C10 project "GEORGIA"-59 Brookwood 2dr wag...Next project-03 Tahoe 4x4 5.3 family ride-07 Hondur Accord, commuter car |
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#12 |
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Join Date: Apr 2011
Location: Mustang, Oklahoma
Posts: 2,806
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Re: 67-72 Electric speedo
My first attempt at centering the S10 needle. got it half a hole off, about .040" now it is dead on.
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Dan <---(my name) 67 SWB C10 project "GEORGIA"-59 Brookwood 2dr wag...Next project-03 Tahoe 4x4 5.3 family ride-07 Hondur Accord, commuter car |
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#13 |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
Wow Dan, that really looks good, but you're going to have to stop, you're making me look bad!
![]() I also thought of making the face out of metal, but didn't have a way to cut out the odometer opening neatly enough. The up side to doing it is you could eliminate the trip odometer and ot would make things a little easier. One tip ill give you though, if you do it, the metal will need to be really thin. If its too thick, the odometer will be too far from the face of the speedo and won't look right. When I first started trying things I tried to use the original face, but since it kind of tapers in around the odometer opening, it just didn't look right. Keep up the good work, and later this week I should have some more progress and some more pics of the process to post.
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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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#14 |
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Join Date: Feb 2008
Location: Cedarville, AR
Posts: 15
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Re: 67-72 Electric speedo
Are you still shipping out your kits? I'd really like to try this. Is the signal from the transmission the same on all GM trannys? Is there a need/way to calibrate the S10 speedo to match a particular type of trans? I did a NV4500 swap and haven't had a speedo since.
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#15 | |
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Join Date: Feb 2008
Location: Cedarville, AR
Posts: 15
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Re: 67-72 Electric speedo
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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 | |
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Join Date: Apr 2011
Location: Mustang, Oklahoma
Posts: 2,806
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Re: 67-72 Electric speedo
Quote:
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Dan <---(my name) 67 SWB C10 project "GEORGIA"-59 Brookwood 2dr wag...Next project-03 Tahoe 4x4 5.3 family ride-07 Hondur Accord, commuter car |
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#18 |
17's too small
Join Date: Oct 2004
Location: Las Vegas, NV
Posts: 335
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Re: 67-72 Electric speedo
I think he is reusing the two tiny screws from the C10 speedo. If you do end up making some of those plates please add me to the list. I picked up the S10 cluster/parts but am on the next list to get the "kit" from ls1nova71
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#19 |
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Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
I only put the 2 screws back in the face for cosmetic reasons. I think it looks better, and there are two white dots on the face where they go. I just drilled the holes small enough so that the screws screw into the face, but are not actually holding 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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#20 | ||
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Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
Quote:
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As for how I put the S-10 face back on the clear plastic, if you don't touch the back side alot, it will be sticky enough to just stick back on. At least the ones I've done have worked out that way. You could put some glue on it or a few pieces of good quality tape on the edges since you can't see them once it's assembled. The tape I use for such things is the aluminum tape for sealing HVAC duct work in houses, which I'm sure you're familiar with! Also, don't worry about the "hijack", this thread is just information and your additions I think people will find helpful. ![]()
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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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#21 |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
Here's the problem with the trip odometer. The re-set knob is just a touch too short. It's about 1-15/16" long, and needs to be close to 2-1/4". To remedy this I cut the knob and lengthened it with a small screw. You probably don't need a screw to do it, since you'll never really be putting much pressure on it, you could probably just drill it, put a short piece of a nail or something in it and glue it back together, but I had the stuff lying around and it's what I used.
These are the part's I used. A small drill bit, a 4-40 tap, and screw. Then I cut the knob off and sanded the end where I was going to be drilling the hole in it. ![]() Drilled the hole in the end about 3/8" deep. I used a drill, but you could also put the bit in an X-Acto knife. Drilling plastic is really pretty easy, just make sure it's centered the best you can. ![]() This is what it looks like drilled. ![]() Then I put the tap in a pair of Vice Grips and tapped the hole. ![]() Then the screw will screw into it. ![]() Drill and tap the other end, cut the head of the screw off and thread each end in. ![]() ![]() Later, after I've adjusted it to the length I want, I'll put some glue in them so it won't thread out, but odds are it wouldn't move anyway. You can also see that I didn't get the bottom part exactly centered, it's not a big deal, since you can just thread it in or out a bit to get it where you want it.
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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 | |
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Join Date: Apr 2011
Location: Mustang, Oklahoma
Posts: 2,806
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Re: 67-72 Electric speedo
Quote:
![]() Q: does the needle have to sit up higher that the stock needle? Just wondering if I couldnt just bore out the stock needle hole to fit or would it be too short? I am almost done with the mounting plate but have a bit to go on the rear cover box. Those pesky light bulbs make it difficult. I may make another one and just use LEDs to backlight it like the one you used for the high beam indicator. I think that would give me a bit more wiggle room for the rear cover box. Here are some pics of the almost finished plate and my progress.
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Dan <---(my name) 67 SWB C10 project "GEORGIA"-59 Brookwood 2dr wag...Next project-03 Tahoe 4x4 5.3 family ride-07 Hondur Accord, commuter car |
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#23 |
17's too small
Join Date: Oct 2004
Location: Las Vegas, NV
Posts: 335
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Re: 67-72 Electric speedo
Just in case anyone was wondering why you cant use a speedo from a tach S10...
There is not an odometer attached to the speedo, it is in the tach. The one you want is in the top of the picture.
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#24 |
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Join Date: Aug 2010
Location: Netherlands, The Hague
Posts: 1,518
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Re: 67-72 Electric speedo
I'd like to know this too...would be cool to also swap that tach
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#25 |
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Re: 67-72 Electric speedo
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