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'73 Speedometer

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Old Dec 21, 2019 | 01:22 PM
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Default '73 Speedometer

Ok you guys cut me some slack here/only had the car about a month. Anyway I've searched here and seen dozens of threads about speedo issues and lubricating the speedometer cable. What I haven't seen is a definitive answer to this question:
If I come to a complete stop and my speedometer reads 30 mph, does that definitively mean it's the gauge and not the cable? The speedometer seems to be fairly accurate at highway speed, just doesn't go to zero at full stop. You can leave it in garage a few days, then go look and it will have returned to zero.
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Old Dec 22, 2019 | 03:26 PM
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Its the gauge. The cable isnt moving when you are stopped. The head of the speedometer may have old grease preventing it form easily returning to zero.
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Old Dec 22, 2019 | 07:52 PM
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Originally Posted by MelWff
Its the gauge. The cable isnt moving when you are stopped. The head of the speedometer may have old grease preventing it form easily returning to zero.
Yeah that's kinda what I figured, just wanted to make sure. So how hard is it to get at the gauge? Thanks in advance for the tips!!!
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Old Dec 22, 2019 | 08:28 PM
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You should get a copy of the factory Chassis Service manual. You have to drop the steering colimn and pull forward the driver side dashboard.
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Old Dec 23, 2019 | 08:54 AM
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^
I have the shop manual, is that the same?
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Old Dec 23, 2019 | 12:57 PM
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Originally Posted by Elcransonator
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^
I have the shop manual, is that the same?
Depends, is it a copy of the factory manual or something else like Hanes or Chilton?
https://www.zip-corvette.com/73-shop...SABEgIqKPD_BwE
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Old Dec 24, 2019 | 08:39 AM
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This is what I have.



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Old Dec 24, 2019 | 12:54 PM
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That is a generic book covering many years, the link I gave you is for 1973 only.
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Old Dec 24, 2019 | 04:39 PM
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Ok cool thanks for the tip/I'll get that one. I read somewhere that "service manual" was bad, like basic stuff/not how to work on one.
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Old Dec 25, 2019 | 11:50 AM
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When I replaced the tacho in my '74, i had to remove in this order:
- all the windshield trims
- upper dash pad (cracked during removal )
- center console
- lowered the steering column
- driver dashboard
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Old Dec 25, 2019 | 07:20 PM
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http://repairs.willcoxcorvette.com/category/speedo/

http://www.corvettemagazine.com/tech-articles/1968-1977-corvette-speedometer-tachometer-repair-installation/

Last edited by caskiguy; Dec 25, 2019 at 07:23 PM.
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Old Dec 26, 2019 | 11:56 AM
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http://www.corvettefaq.com/c3/RebuildSpeedo.htm
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