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Old 05-28-2012, 05:34 PM
BigMac76 BigMac76 is offline
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Default Spark plugs...what are you running?

Ok guys, decided to pull the plugs on the z today and damn! What a mess these things are, not to mention a total pain in the balls! 1, 5, and 7 weren't bad at all. But 3, and all the right bank are going to kick me in the nuts wicked hard here. Pulled all the odd bank and they looked like garbage. Weird thing is that they all looked like the oem plugs. All are AC Delco 41-952. Now I know GM discontinued these in favor of the iridium plugs, 41-985.

Just wondering what everybody else with the LS1 engines are running in their cars, also what trick do you have for removing the even bank plugs, removing the coil packs and bracket or?
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Old 05-28-2012, 11:52 PM
Slowhawk Slowhawk is offline
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NGK #3951 Tr-55 plugs. About $25 for the set.

Pass side- remove coils.
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Old 05-29-2012, 01:28 AM
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i run the NGK's as well. good plug.
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Old 05-29-2012, 02:23 AM
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Tr55 for na
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Old 05-29-2012, 07:45 AM
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same here
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Old 05-29-2012, 11:26 AM
BigMac76 BigMac76 is offline
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Have heard some really good things about the ngk tr55's. Ordered some delco 41-110's off ebay. Will give em a shot and if they're junk, I'll be going with the ngk's.
Looks like the delco's that were on the car might've been the originals, I'll snap some pics of the old plugs, man these things are sexy! lol
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Old 06-01-2012, 12:09 AM
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ngk tr55's here
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Old 06-01-2012, 03:06 AM
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running the same ngks as everyone else lol
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Old 06-01-2012, 06:49 PM
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Well I will be different. I run ngk br7ef gapped at .32. I have nitrous so I use a colder non projected tip
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Old 06-01-2012, 11:47 PM
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I use the ngk tr55ix in my car, no complaints here
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