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Old 08-24-2022, 10:19 AM   #1
ChadW
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700r4, 4th gear pressure switch Part Number

Im in the process of wiring up the lockup circuit for my 700r4 that is going to be installed in my project...Can anyone tell me the part number for a pressure switch i can use in the 4th gear port for TC Lockup? I know i need a normally open/2 spade switch. I see one made by Standard Motor Products (PS-135) but from my reading it is a really low pressure switch...anyone have a part number?
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Old 08-24-2022, 04:26 PM   #2
Wrenchbender Ret
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Re: 700r4, 4th gear pressure switch Part Number

There is a 2 prong oil pressure switch that is used for the choke on 60's & 70's engines.
I don't know the part # but I have used them before for a lockup on trans.

George
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Old 08-24-2022, 07:17 PM   #3
pjmoreland
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Re: 700r4, 4th gear pressure switch Part Number

The 4th gear pressure switch in my 700R4 (1993 model) is normally open, has a single prong, and connects the prong to ground through the case when activated. This switch is mounted to the valve body inside the pan. I believe this is the same general type I have:

https://www.oregonperformancetransmi...NTP-51876.html

Are you planning on wiring it up in a fancy way that would require two prongs?
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