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Spark Plug Help!

Discussion in 'The Garage' started by porboy, Jun 15, 2003.

  1. porboy

    porboy Registered Member

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    I can't get a straight answer out of anyone I know as to what I shoulg gap my plugs to. It is a 75 3/4 ton Suburban with a new 350 crate motor and HEI. I keep hearing .035 and .060. I have no idea which one to use. I know I could split the diffrence but I am heading on a 2000 mile road trip and want everything to spec. Please help.
     
  2. BorregoK5

    BorregoK5 1/2 ton status

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    I'd think .035 on HD plugs.
     
  3. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    The HEI is what goverens the gap. It's .045 with HEI.
     
  4. BorregoK5

    BorregoK5 1/2 ton status

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    Just looked up and and yep, your right!
     

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