oil pressure switch - Impala Tech
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post #1 of 5 (permalink) Old 10-31-2019, 05:40 PM Thread Starter
Join Date: Jul 2016
Location: Brooklyn, NY
Posts: 53
oil pressure switch

I hope this isn't too stupid of a question :/

My 64 has a sbc 350 in it and I'm pretty sure the oil pressure switch has never been connected.
I am not running gauges, just the light in the instrument panel.

My question is;
Should I place a pressure switch in the position behind the carburetor (currently nothing there) or the one near the oil filter (which as yet I can't see; only had a quick look today)?
And I'm guessing when using just the instrument panel light I only need the single prong switch?

kiwidave is offline  
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post #2 of 5 (permalink) Old 10-31-2019, 06:48 PM
Join Date: Jan 2006
Posts: 12,836
Idiot light uses single prong sending unit. You need a gauge and a matching sending unit to get an electrical gauge to work. In the Camaro, Nova, and Chevelle the oil pressure gauge is mechanical, not electric. No knowledge as to full size cars, as factory gauges are very rare.

Big Dave
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post #3 of 5 (permalink) Old 10-31-2019, 08:08 PM Thread Starter
Join Date: Jul 2016
Location: Brooklyn, NY
Posts: 53
Thanks Dave.

In your opinion, would a single prong unit work in the top position (behind carburetor and distributor) or should I place in the spot below?
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post #4 of 5 (permalink) Old 11-06-2019, 07:24 PM
Join Date: Dec 2015
Location: Lansdale, PA
Posts: 59
I replaced my idiot oil and temp switches with Bosch gauges a few years ago. My oil pressure switch was behind the carb near the distributor
Nossa_h_64 is offline  
post #5 of 5 (permalink) Old 11-07-2019, 01:53 AM
Join Date: Jan 2006
Posts: 12,836
Pascals law states all hydraulic pressure is the same every where in a closed system so it doesn't matter where it is measured from. In the old days I used the front of the block location as it was the furthest from the pump. If I had pressure there I had pressure every where else in the engine.

Big Dave
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