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GM Oil Pressure Gauge and Sending Unit

I love my Chevy Chevette!
Posts: 6
Joined: 10/12
Posted: 07/26/15 03:57 AM

I am trying to update my 78 Camaro with an electronic oil gauge out of a 78 C10 using the clock housing in the cluster -  similar to gauge marks.  My problem is I cannot seem to get the pressure reading above 20, even tried it on 2 different gauges form a 78 truck..  If I use the same sending unit with 2 different aftermarket gauges they both read about 60.  Tried another sending unit with the same results.  Is there a special sending unit I need for the factory GM gauge from a  78 truck?  I am using the PS154 now.  

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