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LT1-LT4 Modifications
1993-97 Gen II Small Block V8

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Old 02-18-2003, 06:26 PM   #1
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Default LT1 spark plug gap ????

i know this is LS1tech, but my friend wanted me to ask everyone if you guys happened to know what gap you should have on spark plugs for his 97 SS......they are the NGK TR55's btw.....


thanks for any help!!


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Old 02-18-2003, 08:32 PM   #2
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Default Re: LT1 spark plug gap ????

.045 is normal.
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Old 02-18-2003, 09:49 PM   #3
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Default Re: LT1 spark plug gap ????

thanks man thats what i needed to know
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Old 02-20-2003, 12:26 AM   #4
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Default Re: LT1 spark plug gap ????

Hey gang according to the Clinton manuel that I just bought the LT-1 spark plug gap is ........035 <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
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Old 02-20-2003, 01:04 AM   #5
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Default Re: LT1 spark plug gap ????

ive seen from .055 to .035 i dont think it makes much of a difference to be honest unless you have a power adder in which case smaller is better to keep from blowing out the spark
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Old 02-20-2003, 01:04 AM
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2001, 97, engine, gap, gapping, ls1, lt1, lt4, ngk, plug, plugs, spark, sparkplug, stock, trans


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