Mechanical speedo
11-01-2004, 08:33 AM
#2
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If you're going to put it behind an LS1, the PCM needs the VSS signal to function properly. So some searching on VSS to find a few threads that talk about why the computer needs to know if you're moving.
If this isn't the case, D&D Performance (http://www.ddperformance.com/) might be a good place to start. I don't know where you are, but they're local to me in the Detroit area.
-Matt
If this isn't the case, D&D Performance (http://www.ddperformance.com/) might be a good place to start. I don't know where you are, but they're local to me in the Detroit area.
-Matt
11-03-2004, 07:35 AM
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Another alternative is to use one of our Speedometer Control Units (SCU). The part number is 377300. It translates the electrical signal into a mechanical output. You'll also need a cable. Part number 377301 fits the '71 and older threaded style speedo. Part number 377302 fits the later model clip on speedo.
Kevin Winstead
TCI Automotive
(662)224-8972
Kevin Winstead
TCI Automotive
(662)224-8972
11-03-2004, 11:30 AM
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I'm using an Abbott Cable-X converter box which takes the VSS signal from the trans and converts it to a mechanical cable drive. Haven't installed it yet but have heard positive feedback about it.
11-04-2004, 09:22 PM
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Kevin,
What is the cost of your unit? I have no speedo in my car because I couldn't justify the cost of the Cable-X. I'm sure there are people out there looking for a lower-cost solution.
Thanks,
Matt
What is the cost of your unit? I have no speedo in my car because I couldn't justify the cost of the Cable-X. I'm sure there are people out there looking for a lower-cost solution.
Thanks,
Matt
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11-05-2004, 07:16 AM
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There is a company www.stealthconversions.com who converts T56 tail housing to mechanical and VSS. They have the conversion for LT1, but not LS1. Would there be any differences w/ the signal?
11-05-2004, 01:25 PM
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In my case the Cable-X was the cheaper option. At the time, a modified tailshaft cost more. The other factor is that I wanted an Autometer 200mph speedo with a standard odometer and it was only available as a mechanical gauge.
11-12-2004, 01:38 PM
#11
Speedometer I'm in the planning stage right now but as soon as my conversion is complete I plan on making my own electrical to mechanical converter using a few ICs and a stepper motor. Shouldn't cost more than twenty bucs. When I get it made and tested I'll post a schematic.
