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Advance Type (stuiped question)

Discussion in 'The Garage' started by adamforsythe, Mar 10, 2007.

  1. adamforsythe

    adamforsythe 1/2 ton status

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    What is the Advance Type on a 1985-1986 350 carb. HEI set up....basiclly stock
     
  2. lak2004

    lak2004 1/2 ton status

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    vaccuum
     
  3. adamforsythe

    adamforsythe 1/2 ton status

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    Thank you
     
  4. dyeager535

    dyeager535 1 ton status Premium Member

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    Actually depends.

    You have a rig originally from California, or does it have ESC?
     
  5. adamforsythe

    adamforsythe 1/2 ton status

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    Nope it is from Maine. What the heck is ESC?

     
  6. dyeager535

    dyeager535 1 ton status Premium Member

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    Electronic Spark Control, as well as EST, Electronic Spark Timing.

    Not sure which is which, but I suspect ESC are the distributors that have vac and mech. advance but use a knock sensor to retard timing.

    There are EST setups out there, and those distributors have no vac or mech advance. The EST computer controls all aspects of timing, and would have a knock sensor as well.

    CA trucks could have CCC, which is the computer controlled carb, and of course a distributor that is completely controlled by the ECM.
     

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