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11-19-2014, 01:40 AM
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#26 |
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Registered User
 Join Date: Nov 2014
Location: MN
Posts: 30
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Re: Tach install
Ray, I just thought of this...I have found a cluster housing like I need, but it has the electrical oil gauge. Couldn't I just dremel out an opening large enough to install the mech oil tube, then the rest of the cluster would be the same?
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11-19-2014, 02:21 PM
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#27 |
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Registered User
Join Date: Nov 2014
Location: MN
Posts: 30
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Re: Tach install
Ray, I found one that is just like the 77 but it has the electrical Oil Pressure. Couldnt I just dremel out an area to connect the mechanical oil pressure? Seems like this would be the less invasive way along with changing the printed circuit to the 1977.
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11-19-2014, 04:13 PM
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#28 |
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Senior Member
Join Date: Jun 2009
Location: Phoenix AZ
Posts: 4,603
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Re: Tach install
It isn't possible to do that as the electric and mechanical gauges mount differently. You would be better off repinning your plug and getting an electric sender
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AZPartsLocators on Instagram 1972 Cheyenne Super Short Bed big block "Blackie" 1977 Crew Cab GMC Short bed with 4BT Intercooled Cummins Diesel and a 4L80e "The Junkyard Dog" 1985 Crew Cab Chevy dually with 5.9 Cummins "The Big Dog" This is what my dad liked to be called by the grandkids before he passed so it seems fitting for his old truck. |
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11-23-2014, 12:17 AM
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#29 |
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Registered User
Join Date: Nov 2014
Location: MN
Posts: 30
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Re: Tach install
I found a used 1976 instrument cluster. Pretty rough but the mounting is good. Is there a way I can test the tachometer and the fuel gauge to see it they work before I install them?
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11-23-2014, 10:37 AM
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#30 |
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78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
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Re: Tach install
You should be able to hook it up, to try it.
I've used trailer light plug for hooking them up. Ez in out when needed I have another long wire to run under hood for tuning.
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John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
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