Re: 67-72 Electric speedo
 

Don't have any more at this time, but may in the future. I'll let you know when the time comes.

Re: 67-72 Electric speedo
 

Just thinking (dangerous I know) if you devided your gear ratio in the PCM by 1.2 could you keep the original face and the 0-100 on the lens? I.e. if you had a 3.07 you would enter 2.56 in the PCM. You could also modify tire size in the same manner. Would this work?
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Re: 67-72 Electric speedo
 

Kind of. You can modify the tune to make the MPH part of the speedometer work with the original face, but the problem lies in the odometer. If you just changed it in the tune and made the needle match the number of whatever speed you're going, the odometer wouldnt be correct.It has to do with the sweep of the S-10 speedo, its calibrated to the odometer. I hope that makes sense?
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Re: 67-72 Electric speedo
 

It does make perfect sense. :dohh:
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Re: 67-72 Electric speedo
 

Thanks. I'll try and wait patiently until then. Great job done by the both of you.
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Re: 67-72 Electric speedo
 

Subscribed

You can put me down for a print if you make another run.

For the others, perhaps an old school VSS buffer from a carbed GM would drive the speedo?

Re: 67-72 Electric speedo
 

Eric,

Can I ask you if its possible to make the speedo in KPH? Maybe you could put me in touch with your designer to get it done. Or a copy of the program to get it altered here. I bought a S-10 cluster here in Canada and its in Kilometers. I thought it would be cool to run it that way. Otherwise I'd end up with KM odometer and Miles on the speedo.
Thanks
Jim

Re: 67-72 Electric speedo
 

Eric,

Can I ask you if its possible to make the speedo in KPH? the O would be the same and the 50 mph is the same as 80kph and 100 mph is 160 kph. Maybe you could put me in touch with your designer to get it done. Or a copy of the program to get it altered here. I bought a S-10 cluster here in Canada and its in Kilometers. I thought it would be cool to run it that way. Otherwise I'd end up with KM odometer and Miles on the speedo.
Thanks
Jim

Re: 67-72 Electric speedo
 

GM DRAC/VSSB Calibration

If you are carbed, this is what you need to drive an electric speedo. They are easy to find in 92-95 Chevy/GMC full size trucks, its a white box mounted under the ECM. Make sure you take the pigtail as well.

Easy to wire it too. Just de-pin wires you won't be using and braid together the VSS sensor wires to prevent interference. Connect 12V+ switched thru a 2A fuse, ground, and the C15 VSS output to the speedometer input. Calibrate the box using the method above, and done. Way cheaper ($5 if the junkyard even charges you) and guaranteed to work correctly vs the universal Dakota Digital method for $89.

http://www.gearhead-efi.com/Fuel-Inj...2&d=1364581330

Re: 67-72 Electric speedo
 

Working on a redesigned box and have a few Questions. :banghead:

1. First the box dilemma. I designed this with flanges that tuck inside to be spot welded so it would be easier than welding seams with a mig. Works okay but the jaws on our spot welder head butt the opposite edge in a couple places, arrgh. Not terrible but forming this was a bear! Might be a better idea to use small sheet metal screws? or rivets? or just remove the tucked in flanges and seam weld? Opinions?? when I have the flanges tuck in there is a small gap in the corners, do you think this needs to be water tight or just a dust cover?

2. The flippin crappin lights :fry: I angled both upper corners at 45* one side to stay inside the edge of the tin the other to clear the light (instead of rounding the corner like the template) but my box and the one I made from the paper template interfere with the odo reset (barely) so I have to make it just a bit wider. So why not enclose the inboard light under the box too? (pic 4)

3. along with Q 2, if I enclose the light will It cause interference with the Tach? I don't have a tach, and does a factory tach even work with an LS?

I keep trying to make these lightbulbs work but seriously think I will have to go with small LED lights to get something I am really happy with because they are just in the way soooo much.

My flanges are too wide and screw holes are too big so nevermind the slight overhang. Will try some more improvements tomorrow.

Re: 67-72 Electric speedo
 

Factory tach will work with an LS engine, you just have to re-program the PCM output to 6 or 8 cylinder pulse; depending on what your tach is calibrated for.

Re: 67-72 Electric speedo
 

In the interest if making this easier for anyone to do (you did volunteer didn't you? :lol:) I would say forego the spot and seam welding and go with sheet metal screws referencing factory holes if possible. I would think it only needs to be a dust cover not water tight. I for one would prefer to not even use the trip odo so the reset interference is of no consequence to me. I would suggest covering the offending light bulb if it can be done without interfering with a factory tach.

Keep plugging away man! Many thanks!
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Re: 67-72 Electric speedo
 

1. The box isn't water tight, it's just a dust cover, and to keep the electric parts safe. If you screw it together, you'd just have to make sure they don't interfere with anything, but I think it would work. Just be sure the circuit board fits under it, don't want to get it made to look nice then find out the speedo won't fit! :lol:

2. You could enclose the turn signal indicator light if you want to, it's no different than enclosing the two dash lights, but I think the box would have to be bigger across the top.

3. THe factory tach will work with the engine, but you need to set the tach resolution from 6 to 3 in the tune, this will double the output since LS engines use a 4 cylinder output from the factory. As for the tach actually fitting, it's close! But it will fit, although if you enclose the turnsignal light, I would get a tach and make sure it doesn't hang over where the tach needs to be. Here are the pics of my first one that I put a tach in for reference.

Re: 67-72 Electric speedo
 

Jim, I don't know how well it would work out. Just going from the stock 100MPH to 120MPH made the lines on the face a little crowded, since there are now 12 lines versus the original 10 (one for each 10MPH) Doing a KPH conversion would mean the speedo would need to go to 190KPH, and you would have to have 19 lines on it. It would basically be starting over at the graphics shop, and that cost me almost a hundred bucks. If you really wanted to do it, I would find a local graphic shop and ask them if they could do it for you.

This is VERY interesting! Thanks for posting the link, I may have to try this just to see how it would work out.

Re: 67-72 Electric speedo
 

Eric,

I wouldn't need to have 19 different lines ordinarily in KPH they go every 20 kph intervals so I would just use 0, 20, 40, 60, 80, 100, 120, 140, 160, 180, 200 even for a total of 10 max. With the 0 the same and 80 kph at the 50mph 160 at 100mph as those are direct conversion and evenly space the rest out to match. Could let it end at 180 kph if that made it easier. Either way when you get another order going I'll get a set and if need be go and see if I can use that one as a template for a KPH one. Then go to a graphic designer from there. I guess I should just return the KPH one here and get a MPH from the states to make my life easier just thought it would be cool to have it kilometers.

Re: 67-72 Electric speedo
 

Just bought a MPH one from eBay so not to worry. I'll return the KPH one and stick with the MPH. Might as well keep this as simple as possible. Let me know when the next order is coming up. Thanks Eric.

Re: 67-72 Electric speedo
 

I would like 2 of those kits on your next order

Re: 67-72 Electric speedo
 

Well here is what I came up with guys. This is my production plate and box. First I will install these on a tin for Mike, follow along and details at the end if you are interested.

1. Cut speedo lump off of tin, pic compared to my first tin. Traced plate outline to show where you need to cut. You need to cut out more for the lights etc. like the first version.

2. Tin #2 cut out. I used a punch press ;) but you can do just fine with a dremel.

3 & 4. new plate to be installed. use the existing 1/4" hex head screws from the volt and temp gauge assembly in existing holes in rear tin to mount the plate for proper alignment.

5. Plate installed with proper alignment using existing holes in tin.

Re: 67-72 Electric speedo
 

1. Center punch and drill 6 (or less, however many you think is necessary;)) .125" holes and install screws (I used phillips head #10? I think) They are the only holes that you can see the green paint on the tin.

2. Remove 3 1/4" hex head screws used for alignment. (one is still in place in the pic. woops.)

3. Install light bulbs. These are the originals but you will need wired light sockets of the same size.

4. Place the S10 speedo assembly onto the plate.

5. Place the clear S10 lens over and install the T15 Torx screws from the back side.

Re: 67-72 Electric speedo
 

1. Rear view of speedo, T15 screws installed.

2. Install S10 circuit board with T9 Torx screw. Why does GM use odd sized Torx screws ??:lol: I bought a fold out multi Torx tool at lowes.

3. Notice the two holes under the speedo where the rear tin is clearanced ?? These are for the cover box :smoke:

Re: 67-72 Electric speedo
 

1. Speedo box installs flush with the offset edge on the rear tin and in the holes mentioned in the plate.

2. Install two bottom box retaining screws.

3. Move to the top of the box and center punch and drill one more .125" hole and install screw.

4. volt /temp gauges reinstalled in original holes with the 3, original 1/4" hex head screws.

5. Pic of box installed..

Re: 67-72 Electric speedo
 

Notice there is a hole for a snap bushing to run your wiring through the box. The box fits very tight and will ride on the edges of the light bulb sockets. The box is a PITA to make and I spot welded the flanges together. There are small gaps etc, not perfect by any means but much better than beating a sheet over a table with a hammer ;)

Re: 67-72 Electric speedo
 

A couple installed pics. This took me about 10 minutes to install, easy as pie :ito:

Re: 67-72 Electric speedo
 

So right now I have 5 sets ready to go, box and plate. I obviously cannot ship until next week due to the holiday and that little child birth event on tuesday. Please do not buy one if you do not already have the kit from LS1NOVA.

If you buy a kit from LS1NOVA I can make these for you. I can supply both pieces or just the plate. Just let me know what you need. Personally I dont see much need for the box as long as you have a windshield and/or you dont put your beer err I mean soda on the dash :lol:

First two are reserved for:
CJOHNSON
WGEYER
unless they pass

Note: I do not know or guarantee that this rear box will not interfere with an original tach. I did the best I could referencing pictures but without a tach on hand its a gamble.
I will design another version without the S10 odo reset and use LED light but this is it for now. I will be away from work for the next 5 weeks so I don't expect to have that anytime soon.:lol:

The plates will need some minor deburring (with a file) due to our turret press being an antique, cant wait for the new water jet to arrive ;) also these plates may need to be clearanced slightly below the upper speedo mount hole and the right speedo mount hole (see arrows in pic). There are a few cosmetic issues I will fix later but nothing that causes any functional issues.

I attached a couple production pics just to show how these are made. The plates are easy I just shear a sheet to size and set up the machine and push a few buttons. The box on the other hand has to be formed on our press brake and then spotwelded together. A lot of time goes into that stinkin' box, arrrgh. :lol: The punched sheet of boxes is actually an old version if you happened to notice the difference.

So the deal... Technically I can do this "for personal use only" so I am not in the position to profit on this, rather just sharing with you guys what I was doing for myself anyway. Considering the cost of steel, countless hours in design development, 3d modeling design, CNC programming, machine set up, machine run time, "G job time" ( me off the clock making these)...So I will price this at $30 shipped to your door in the CONUS only. Or just the plate only for $10. The plates are .056" galvanized steel and the rear cover box is .032" galvanized steel. I can make them thicker or thinner, what ever works best. One condition, you must tell me your opinions, complaints, suggestions, and I will work with you guys to improve these. I get paid plenty and have no reason to capitalize off my fellow truck lovers.

Re: 67-72 Electric speedo
 

Very nice work :thumbs:

Re: 67-72 Electric speedo
 

Dan,

Those kits look very neat! It looks like you've spent months on development to make these. I will definitely take one! Please PM me your detail and I'll get the funds over to you!

Thanks for sharing this with everybody!

-Will

Re: 67-72 Electric speedo
 

dan put me down for one of those kits if you still ahve any left, or I will wait for the next batch... I do need to know where to send payment... I will send you a PM

Re: 67-72 Electric speedo
 

Wow Dan! What can I say, those look great! Congrats on the baby, and glad you weren't affected by the tornado, looks like it was pretty close to you.

One suggestion on the rear cover box though. I make the hole for the wires go all rhe way down so that you can remove it with everything all wired up. That way if you need to remove it to change a lighr bulb you don't have to unwire anything. The box is necessary to keep dust out of the speedo, it builds up faster than you would think!
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Re: 67-72 Electric speedo
 

Dan. You sir are an artiste. I can't imagine why I wouldn't spend the $30 to avoid the headache and get a better piece than I would have made in the first place :metal: just lmk how to pay you. I will definitely take a plate and rear box. Also: keep me in mind if you figure out the whole no trip odometer quandary.
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Re: 67-72 Electric speedo
 

I will take one if available. I already purchased the kit from LS1nova.
Chuck

Re: 67-72 Electric speedo
 

Been watching for awhile this is awesome stuff. I'd like one of those kits pending ls1nova conversion. Eric put me on your list please.
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Re: 67-72 Electric speedo
 

Thanks! I must have done well if you think so. You make some awesome parts!

message sent.

Thanks and thanks again! No damage here but many people we know and coworkers were affected.

Dang I see what you mean on the hole. I also noticed one possible flaw, a plastic snap bushing may interfere if pushed in from the outside. so you would have to install it from the inside and then it is in the way of the box mounting screw. I will have to change that. I will just have to run the wires through the hole without a snap bushing on this one. I see also once I put the whole thing together that the back of the cluster is quite dusty and the space around the speedo would allow dust inside the front of the cluster and make an ugly mess so a box is required.

Thanks, message sent. :sumo:

message sent Chuck, Thanks

Message sent, Thanks


I would appreciate any feedback you guys have on these and will take suggestions on how to improve them.


All 5 plate/box sets are spoken for. I will run another batch in July if there is any demand for them. I do have one extra plate if anyone else is wanting to do this and I will get you a box first thing in July.

Re: 67-72 Electric speedo
 

Paypal sent. Thanks

Re: 67-72 Electric speedo
 

Payment sent!

Thanks again for doing this!

Re: 67-72 Electric speedo
 

Payment sent. Thanks for an awesome product.
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Re: 67-72 Electric speedo
 

Is anyone trying this on a 3 hole dash? Just wondering before I send them out. The plate is too large to fit inside the rear tin. A 3 hole dash would require a different plate and box.
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Re: 67-72 Electric speedo
 

I'll take a set if available.

Re: 67-72 Electric speedo
 

Need a set, too. When they come around...
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Re: 67-72 Electric speedo
 

If there are any left I would like just a plate for the $10 deal. PM me payment info.

Thanks, John

Re: 67-72 Electric speedo
 

I will take a set in July when they become available.
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