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Author Topic: Factory Tach Swap into an 87  (Read 3354 times)

Offline Low87c10

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Factory Tach Swap into an 87
« on: May 31, 2010, 06:53:23 pm »
I have an instrument panel with the factory tach that I'd like to put into my 87. The panel is all electric, and I know that I will need to use the original 1987 speedometer. Does anyone know of a source for a wiring diagram so I can re-pin the connectors? Any surprises I should watch out for?

Thanx!
 
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Offline topp

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  • Posts: 498
Re: Factory Tach Swap into an 87
« Reply #1 on: May 31, 2010, 08:38:15 pm »
You must wire it manually from the Dist.

The 87 uses VSS and the tach feed for that can NOT be shared
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'90 Suburban TBI 350

Offline slamd83c10

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Re: Factory Tach Swap into an 87
« Reply #2 on: May 31, 2010, 10:31:38 pm »
exactly
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Offline dahoyle

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  • Posts: 3
Re: Factory Tach Swap into an 87
« Reply #3 on: May 31, 2010, 11:27:12 pm »
Quote from: Low87c10 on May 31, 2010, 06:53:23 pm
I have an instrument panel with the factory tach that I'd like to put into my 87. The panel is all electric, and I know that I will need to use the original 1987 speedometer. Does anyone know of a source for a wiring diagram so I can re-pin the connectors? Any surprises I should watch out for?

Thanx!
 


There is a pic of how I did mine in the following thread.   

http://www.fullsizechevy.com/showthread.php?424327-Instrument-Cluster-W-Tach
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