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07-05-2017, 04:25 PM
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#1 |
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Registered User
Join Date: Jun 2007
Location: Everest Ks
Posts: 749
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GMC Tach?
Okay guys is this a GMC tach or is it for something else. Joseph
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1970 Chevelle Nomad station wagon 1966 C-10 lwb,250-six,granny 4speed  1966 C-10 lwb,factory A/C,Custom Cab 1954 Delray 2-door sedan [rat rod project]
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07-05-2017, 05:09 PM
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#2 |
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Registered User
Join Date: Mar 2011
Location: garden grove
Posts: 175
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Re: GMC Tach?
This looks like a speedometer with the back cable input but it says RPM's. Strange. Maybe to an old motorcycle. Any markings on it? How wide is the lens?
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07-05-2017, 05:43 PM
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#3 | |
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Registered User
Join Date: Feb 2008
Location: Sidney,b.c.
Posts: 4,425
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Re: GMC Tach?
Quote:
ron |
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07-07-2017, 02:41 AM
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#4 |
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Registered User
Join Date: Jun 2007
Location: Everest Ks
Posts: 749
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Re: GMC Tach?
Ahh, I see. I knew it was mechanical. The light duty trucks were electric I was thinking. I saw it on Craigslist and wondered what it was. Thanks, Joseph
__________________
1970 Chevelle Nomad station wagon 1966 C-10 lwb,250-six,granny 4speed 1966 C-10 lwb,factory A/C,Custom Cab 1954 Delray 2-door sedan [rat rod project]
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07-07-2017, 10:15 AM
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#5 |
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Registered User
Join Date: Feb 2008
Location: Sidney,b.c.
Posts: 4,425
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Re: GMC Tach?
all diesels of this vintage used mechanical due to lack of ignition system to send impulses. some gas pots also used them.
here is another form of tach, which is the hand held by Starrett and this one has been around the family as long as I have been around. just put the black rubber tip on the end of the crankshaft(centre) and read  ron |
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07-09-2017, 08:06 PM
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#6 |
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Registered User
Join Date: Apr 2004
Location: Piedmont, OK
Posts: 44
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Re: GMC Tach?
International Harvester
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