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plug gap

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by NoSmog73, Jun 22, 2002.

  1. NoSmog73

    NoSmog73 1/2 ton status

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    Ok I forgot the gap that should be on the plugs...
    1.They are the split fire plugs
    2.I have the msd-off road
    3.With the accel wires.
    4.and points not hei (yet)

    I think I remember it like .55-.70 (something like that) also I thought it was a good Idea to open up the gap from stock for the msd am I right...
     
  2. Tweetysuarus

    Tweetysuarus 1/2 ton status

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    mailto: msdtech@msdignition.com
    Try this for support on MSD products.
    Don't know right off hand though. Sorry, this the best I ca do.
    Bill /forums/images/icons/crazy.gif
     
  3. Hossbaby50

    Hossbaby50 3/4 ton status

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    My gap is currently .057 with MSD box, coil and wires, but I am opening it to .060-.065 next plug change. They recommend around .060 with MSD box and good wires.
     
  4. NoSmog73

    NoSmog73 1/2 ton status

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    That's what I thought (memory isn't what it used to be..LOL) I am setting them at .60 now...thanks mike
     
  5. bckinblk

    bckinblk 1/2 ton status

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    I put in a set of splitfires a few weeks ago I gapped them at the recommended specs of 0.35 on my stock 5.7 tbi and it runs extremely smooth with no hesitation whatsoever..........hope this helps.good luck
     
  6. 90K5

    90K5 1/2 ton status

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    Usually running the gap a little more than stock helps gas mileage a little. I run mine at .045 in my TBI 350 and noticed about a 1 mpg difference...well worth it considering its free.
     

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