Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

What size gap?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by BillyBob, Sep 7, 2001.

  1. BillyBob

    BillyBob 1/2 ton status

    Joined:
    Feb 23, 2000
    Posts:
    557
    Likes Received:
    1
    Location:
    Dumont, NJ
    I need to change my spark plugs and wires tomorrow. What size gap should I make the plugs? the ignition is stock.. not big mods on the truck (yet). I figure .45 or less?

    <a target="_blank" href=http://billybob87k5.50megs.com>Homepage of Porky & Stinky</a>
    ".. Sanatarium.. leave me be..."
     
  2. bee32

    bee32 1/2 ton status

    Joined:
    Aug 6, 2001
    Posts:
    401
    Likes Received:
    0
    Location:
    Virginia Beach Va.
    When you buy the plugs ask them there. It varies between different plugs and engines.

    Brian
    83 K-5 4" on 33's
     
  3. bigblue

    bigblue 1/2 ton status

    Joined:
    Dec 6, 2000
    Posts:
    658
    Likes Received:
    0
    Location:
    southern california
    .35 -&gt; 87 350

    Surfing is Life...
     
  4. Zepplin

    Zepplin 1/2 ton status

    Joined:
    Aug 29, 2000
    Posts:
    920
    Likes Received:
    0
    Location:
    Bay City, MI 48706
    When a bought a set of Champions I think the gap was .035" but, yes it does vary on the manufacturer.

    74 Blazer
    Zepplin
    Check out my Blazer <a target="_blank" href=http://community.webshots.com/user/zepplin1976>http://community.webshots.com/user/zepplin1976</a>
     
  5. 1975k5

    1975k5 Registered Member

    Joined:
    Feb 28, 2001
    Posts:
    44
    Likes Received:
    0
    Location:
    Alabama
    both my Chilton and Haynes manual say .060
     
  6. Burt4x4

    Burt4x4 3/4 ton status

    Joined:
    Feb 17, 2000
    Posts:
    6,854
    Likes Received:
    0
    Location:
    California (Modesto area)
    I set my Bosh Plat. to .45 for my 350

    72K5[​IMG]Led Zeppelin[​IMG]Rock ON![​IMG]
    <a target="_blank" href=http://www.geocities.com/baja/5099>www.geocities.com/baja/5099</a>
     
  7. ChevyCaGal

    ChevyCaGal 3/4 ton status

    Joined:
    Dec 16, 2000
    Posts:
    8,158
    Likes Received:
    0
    Location:
    Sacramento, CA USA
    Man that seems off unless you have like a MSD in there or something... I gap mine at .35 to .40... it seems that gap at .60 is too wide and will be too hot to work right correct?

    How can I miss you if you won't go away? [​IMG]
    <a target="_blank" href=http://www.chevycagal.homestead.com/steph.html>www.chevycagal.homestead.com/steph.html</a>
    &lt;&gt;&lt; 1 Timothy 4:12 &gt;&lt;&gt;
     
  8. dyeager535

    dyeager535 1 ton status Premium Member

    Joined:
    Dec 13, 2000
    Posts:
    26,982
    Likes Received:
    191
    Location:
    Roy WA
    When GM first started using HEI they went way overboard on gap, then dropped it way back down the year afterwards or so. Olds ran .060 up until the very end, and since its the same HEI system, unless the electrode hits, you *could* run that gap on a Chev too. (but run what the factory recommends)


    Dorian
    My tech/links page: <a target="_blank" href=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</a>
    No anti-theft measures on your truck? No pity when its stolen
     

Share This Page