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Spark plug

This is a discussion on Spark plug within the External Engine forums, part of the LSx Technical Help Section category; Hello first off to the ls world, been to the track with a new setup running nos and burnt a ...

  1. #1
    Junior Member sloroller's Avatar
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    Spark plug

    Hello first off to the ls world, been to the track with a new setup running nos and burnt a plug. Looking for the page with colder plug listings no luck running tr55 ngkplugs any suggestions on a 2step colder plug for ls1 200 shot thanks again.

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    I'll take a look -- the TR55's are what most of us run N/A.

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    Looks like the TR6 is one step colder... still looking.

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    From NGK's site, the "two steps colder" appears to be what you want:

    Typically, for every 75-100 hp you add, you should go one step colder on the spark plug's heat range.

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    NGK:

    NGK indicates the heat range in the middle of the plug number. For example, BCPR6ES-11 has a heat range of 6. (The number after the “-“ is the Gap.) NGK plugs are colder the higher the number, hotter the lower the number.

    Starting with part # BKR6E-11 (Heat Range 6), a colder plug would # BKR7E-11 (Heat Range 7), a hotter plug would be # BKR5E-11 (Heat Range 5).



    EXCEPTION: NGK Racing Plugs: (Any NGK plug that begins with the letter “R”)

    For NGK Racing Plugs, the Heat Range is located AFTER the hyphen.

    Example: R5671A-10 has a Heat Range of 10. A colder plug would be # R5671A-11 (Heat Range 11), a hotter plug would be # R5671A-9 (Heat Range 9).

    Some NGK Racing Plugs are also available in half heat ranges. These are displayed as a 2 or 3 digit number after the hyphen. For example, R6120-85 has a 8.5 Heat Range and R6120-105 has a 10.5 Heat Range.

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    2002 Trans Am WS6 (M6)

    I run a 150 shot and run the NGK BR7EF (stock number 3346) on both the street and track. It seems to be a popular plug for those running something in the range where I am running.

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    Junior Member sloroller's Avatar
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    I ran a 200 shot this weekend and one of the final passes had a studer on the big end. torn into it last night and noticed for one a power wire off on the coil problem one , second took out all plugs, all day job lol and noticed one that had the tip burnt off and the ceramic cracked in too. So i take it that these are plugs aviable at your local auto parts store, thanks again for the help.

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    2002 Trans Am WS6 (M6)

    I picked mine up at a local NAPA store. Assume other local places will have them as well.

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    spark plug is the only thing to do up and change

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