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

best spark plugs for lt1???[B][/B]

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Old 09-23-2010, 01:04 PM
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Default best spark plugs for lt1???[B][/B]

I just put accel plugs in it i went colder too.. it ran awesome for a day the next day it fouled one or two days later... i want some that last a long time and runn great...

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Old 09-23-2010, 01:06 PM
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NGK T55 for stock heat range one colder is T6
Old 09-23-2010, 01:13 PM
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Originally Posted by bigj2717
NGK T55 for stock heat range one colder is T6
i have about 325 rwhp and would you run a colder plug or what?

and where can i get a set?

and whats the easiest way to put them in? any tricks that whould help last time it was a pain in my ***.. iv done it twice..
Old 09-23-2010, 01:32 PM
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with 325rwhp just run the tr55 gaped at .050 no lower than .045 and the easiest way to do them is up to you its really not trick but i can get all mine on the DS from the top and on the PS the front two from the top and the bottom two rear ones from the bottom
Old 09-23-2010, 01:44 PM
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Originally Posted by old93camaro
with 325rwhp just run the tr55 gaped at .050 no lower than .045 and the easiest way to do them is up to you its really not trick but i can get all mine on the DS from the top and on the PS the front two from the top and the bottom two rear ones from the bottom
allright thanks man...
Old 09-23-2010, 01:57 PM
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I'm running TR6s gapped at .038".
Old 09-23-2010, 01:58 PM
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I run tr55's gaped at .050 and my car runs great
Old 09-23-2010, 02:00 PM
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Originally Posted by tbird31
I'm running TR6s gapped at .038".

what does it do to have it gapped closer? will it get enough spark?
Old 09-23-2010, 02:39 PM
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Autolite 104's at .035
Old 09-23-2010, 02:46 PM
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to give you an example i run tr6 gaped at .042 but im at 12:1 cr as well and pushing over 400rwhp, i'm guess you have a stock 350 with the 10:25.1 so tr55 gaped at .050 to .-045 is good enough....JMO
Old 09-23-2010, 03:07 PM
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Originally Posted by old93camaro
to give you an example i run tr6 gaped at .042 but im at 12:1 cr as well and pushing over 400rwhp, i'm guess you have a stock 350 with the 10:25.1 so tr55 gaped at .050 to .-045 is good enough....JMO
allright thanks... that cleared it up for me...lol
Old 09-23-2010, 08:01 PM
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stay away from the accel plugs... they dont last long and are prone to fouling as you found out. no reason to stray from the stock heat range either.
Old 09-23-2010, 08:59 PM
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running a colder plug is not gonna give you any power, run a plug hot enough to keep clean period.

If you were spraying then you might need to run a colder plug and tighten the gap.
F/I you'll do what is needed to keep from blowing out the spark with the gap and run plugs specd by the Co. that supplied the kit to start.



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