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RPM gague question

Discussion in 'The Garage' started by aknight_sa, Jan 20, 2007.

  1. aknight_sa

    aknight_sa 1/2 ton status

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    a friend of mine gave me a new RPM gague but its written on it that its for 3,4, and 6 cylinders would this work in any way with my 454 engine??

    also, what is the connecter needed to connect to the tach?
     
  2. dyeager535

    dyeager535 1 ton status Premium Member

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    Nope, won't work. Needs to have 8 cylinder option. 6 cylinder tach on an 8 cylinder will read 25% higher. :)

    Tach needs power, ground, and tach signal from the distributor. GM distributor cap has it marked right on the top which terminal is for the tach.
     
  3. aknight_sa

    aknight_sa 1/2 ton status

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    is there a certain kind of connector needed for the tach on the hei/.?
     
  4. dyeager535

    dyeager535 1 ton status Premium Member

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    There is, but I *believe* some standard wiring spade connector will clip on.
     
  5. jfaulk

    jfaulk Registered Member

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    X2...there is a male spade connector on the left side of the little square part that sticks out from the dist. cap. you just need to find a female spade connector of that size and plug it in and run you wire through the firewall and to you tach. you can fish around for it with the cap on or you can pop the cap and get to it a little easier.
     
  6. 73k5blazer

    73k5blazer Unplug the matrix cable from the back of your head Premium Member

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    It's called a 56 series Packard Terminal.
    But any 0.25" female pushon will work.
     

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