68 Tach Help - Team Camaro Tech
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post #1 of 5 (permalink) Old Mar 21st, 16, 11:31 AM Thread Starter
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michael
 
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68 Tach Help

Hi

I have a 68 Z with the 6K Tach, when i got the car the tach didn't work, so I pulled apart some wiring and figured out they weren't connected correctly. Now I have everything reconnected and I am getting a what appears to be a positive voltage to the tach that increases with engine speed. However the tach isn't moving, so the questions.

1. does the coil send a positive voltage to the tach?
2. Are there any recommendations for companies that fix the tach and roughly what is the cost?
3. Should i just buy a period correct replacement tach even though mine is a true 6K tach?


thanks for the help
Mike
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post #2 of 5 (permalink) Old Mar 21st, 16, 02:22 PM
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Re: 68 Tach Help

Are you talking about a Factory AC/Delco tach or aftermarket? If factory I have the service manual someplace I can post for you.


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post #3 of 5 (permalink) Old Mar 21st, 16, 03:29 PM Thread Starter
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Re: 68 Tach Help

Quote:
Originally Posted by 69-Pace View Post
Are you talking about a Factory AC/Delco tach or aftermarket? If factory I have the service manual someplace I can post for you.
yes it's the factory one. That would be great. Thanks.
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post #4 of 5 (permalink) Old Mar 21st, 16, 06:57 PM
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Re: 68 Tach Help

There is a sticky here in Electrical on Tach Repair - it might help.
Tach should be hooked up to coil - terminal - a pulsed signal if using OE point set distributor.

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post #5 of 5 (permalink) Old Mar 21st, 16, 07:41 PM
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Re: 68 Tach Help

Here is the service bulletin

https://web.archive.org/web/20120915...air_Manual.pdf


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