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plug gap

This is a discussion on plug gap within the General Help forums, part of the LSx Technical Help Section category; no need for a heated debate , just some opinions on plug type and gap. first replacement since new(50,000)...

  1. #1
    the cake is a lie twozs's Avatar
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    plug gap

    no need for a heated debate , just some opinions on plug type and gap. first replacement since new(50,000)

  2. #2
    Life in the Fast lane sunsetorangess's Avatar
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    If your running stock or close to, then i would stick with the stock gap of .60 and go with some NGK plugs. While your in there i would change out the wires.
    J
    2001 SS, Its not the car its the Driver that matters....

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    Make real real sure Johns00Z28's Avatar
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    What wires are recommended?

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    Life in the Fast lane sunsetorangess's Avatar
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    Quote Originally Posted by Johns00Z28 View Post
    What wires are recommended?
    Here is some good info for ya.
    Tested all major spark plug wires. My results...

    J

  5. #5
    Grand Imperial Wizard Sarge's Avatar
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    Wider gaps provide a smoother idle and easier start up.....theoretically...that is why manufacturers call for them. Performance and MPG come from a smaller gap....and maybe a little rougher idle...so in between is the happy spot IMHO. Every new motor/car truck I get I always start out at the manufacturer recommended gap and work my way down until I find the happy spot. For the record on the GTO 408 Stroker I run NGK TR55's through MSD wires gapped at .040.....in the 5.3 2007 Silverado I run .050 NGK's .......

  6. #6
    Make real real sure Johns00Z28's Avatar
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    Yeah I'm doing a header swap next week so I went ahead and got some NGK TR55 plugs. After reading that link I think I'll go ahead w/ the MSD 8.5s.

  7. #7
    Make real real sure Johns00Z28's Avatar
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    Oh and where would you guys recommend purchasing the wires from? Do we have a sponsor on here who sells them?

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