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oil pressure port size

Discussion in 'The Garage' started by bigbadchev84, Mar 28, 2005.

  1. bigbadchev84

    bigbadchev84 1/2 ton status

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    what size is the oil pressure sending unit port? i am wanting to install a mechanical gauge and still have my dummy light so i need to know what size "t" to ask for at the hardware store.
     
  2. wraenking

    wraenking 1/2 ton status

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    pretty sure its 3/8 wait for someone to confirm
     
  3. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    Oil pressure port on a SBC is 1/8" pipe thread.
     
  4. dyeager535

    dyeager535 1 ton status Premium Member

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    Just as an FYI, the one on the back of the block is 1/8", the one above the oil filter, if present (some are tapped, some aren't) is typically 1/4", but can be 1/8" too.

    Sometimes makes more sense to run things off the one above the oil filter due to space or access concerns.
     

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