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Temperature Sending Unit, Head or Manifold?

Discussion in 'The Garage' started by PsRumors, Dec 15, 2006.

  1. PsRumors

    PsRumors 1/2 ton status

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    I am in the process of wiring the engine and was wondering if the temp sending unit could be placed in the intake manifold and pick up the temp there.

    Anyone with any idea if and if so by how much the difference between coolant temps at the head and at the intake manifold?

    I would much rather keep the wiring away from the exhaust. This is on a 454 in my 85 burb
     
  2. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    I have mine on the water neck . You get the outgoing temp before the radiator .
     
  3. badmix

    badmix 1/2 ton status

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    Mine is in the thermostat house , there was a plug there from the factory, I jus removed the plug and put mine in there. It runs about the same as the factory one which is in the block.
     
  4. Mastiff

    Mastiff 1/2 ton status Premium Member

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    Does that mean you get no good readings until the thermostat opens?
     
  5. Drey

    Drey 3/4 ton status

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    unless he has an elevated type neck like my 6.2 had. Then it could be placed before the thermostat
     
  6. roadnotca

    roadnotca 3/4 ton status

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    Plugged into the head requires more "patience and understanding" because there will be times when you're thinking "Oh s..." when its just working a little harder. Intake mani or water neck will give you enough warning if there is a problem, and it generally waits until the thermostat kicks in. If you have to run a 195* thermo and its a smoggy engine etc., I'd stay with any place but the head.
     
  7. PsRumors

    PsRumors 1/2 ton status

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    There are no smog concerns and I will be running a 180* thermostat.

    Since the general consesus is it will work I'll put it in the manifold and keep the wires away from the exhaust.
     

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