C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Which Plugs to use--- LT4 --- HELP

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Old May 25, 2004 | 03:33 PM
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Default Which Plugs to use--- LT4 --- HELP

I am installing headers on Wednesday and might as well replace the spark plugs.. Which ones are the best????? Thanks for your input..
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Old May 25, 2004 | 04:43 PM
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Default Re: Which Plugs to use--- LT4 --- HELP (dsg049c)

If you don't want to do anything fancy you can't go wrong with just AC Delco R44LTS plugs. They'll cost you $11 for the whole set. You can go through 10 sets of these for the cost of the gimmick plugs or platinums. When you do the math it's actually cheaper for the mileage you get out of them, it just requires you change them more often than with platinums.
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Old May 25, 2004 | 10:03 PM
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Default Re: Which Plugs to use--- LT4 --- HELP (dsg049c)

I run AC Rapid Fire #12's gapped at .049.

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Old May 26, 2004 | 12:14 AM
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Default Re: Which Plugs to use--- LT4 --- HELP (No Go)

NGK TR55's
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Old May 26, 2004 | 04:53 PM
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Default Re: Which Plugs to use--- LT4 --- HELP (CaliforniaVette)

NGK TR55's
:iagree:
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Old May 26, 2004 | 05:46 PM
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Default Re: Which Plugs to use--- LT4 --- HELP (CaliforniaVette)

NGK TR55's
:iagree:
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Old May 26, 2004 | 08:34 PM
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Default Re: Which Plugs to use--- LT4 --- HELP (bogus)

NGK TR55's

:iagree:
:iagree:
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Old May 26, 2004 | 09:02 PM
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NGK TR55's

:iagree:

:iagree:
:iagree: :D
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Old May 26, 2004 | 09:08 PM
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Default Re: Which Plugs to use--- LT4 --- HELP (RichS)

NGK TR55's

:iagree:

:iagree:

:iagree: :D
:iagree:
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Old May 26, 2004 | 09:52 PM
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Default Re: Which Plugs to use--- LT4 --- HELP (mackeyred96)

NGK TR55's

:iagree:

:iagree:

:iagree: :D

:iagree:
:iagree: Yep!
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Old May 27, 2004 | 12:23 AM
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Default Re: Which Plugs to use--- LT4 --- HELP (Tony.96LT4)

Anyone tried the Denso Iridum plugs? They cost A LOT. But hese are supposed to be good for 100k miles???
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Old May 27, 2004 | 01:11 AM
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Default Re: Which Plugs to use--- LT4 --- HELP (Tony.96LT4)

NGK TR55's

:iagree:

:iagree:

:iagree: :D

:iagree:

:iagree: Yep!
:iagree:
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Old May 27, 2004 | 04:46 AM
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Default Re: Which Plugs to use--- LT4 --- HELP (JasonL)

NGK TR55's

:iagree:

:iagree:

:iagree: :D

:iagree:

:iagree: Yep! :iagree:
:iagree:
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Old May 27, 2004 | 08:33 AM
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Default Re: Which Plugs to use--- LT4 --- HELP (96POLO)

just for my reference, where's a good(cheap) place to buy NGK TR55 s?
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Old May 27, 2004 | 08:37 AM
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Default Re: Which Plugs to use--- LT4 --- HELP (96BLKTN)

Anyone tried the Denso Iridum plugs? They cost A LOT. But hese are supposed to be good for 100k miles???
They also cost approximately $100.

You can buy regular plugs for $11 and they are good for 30k miles. So you're basically going through 10 sets of regular plugs, or 300k miles for the price of the iridium plugs. Suddenly they don't sound like such a bargain do they?

Platinums and Iridium plugs are great if you don't want to change them often, but for those who race a lot we've always got the car apart anyway. A spark plug can speak volumes about the engine. The high dollar plugs simply aren't worth it since they'll likely be removed a milltion times anyway.
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Old May 27, 2004 | 08:39 AM
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Default Re: Which Plugs to use--- LT4 --- HELP (Nathan Plemons)

Anyone tried the Denso Iridum plugs? They cost A LOT. But hese are supposed to be good for 100k miles???

They also cost approximately $100.

You can buy regular plugs for $11 and they are good for 30k miles. So you're basically going through 10 sets of regular plugs, or 300k miles for the price of the iridium plugs. Suddenly they don't sound like such a bargain do they?

Platinums and Iridium plugs are great if you don't want to change them often, but for those who race a lot we've always got the car apart anyway. A spark plug can speak volumes about the engine. The high dollar plugs simply aren't worth it since they'll likely be removed a milltion times anyway.
IF you are racing.

If you drive like I do, which is 99.9% street, IE, more like a regular car, and don't want to fight plugs every year, then get the NGKs.

Not everyone is a racer. I put 15k miles a year on mine, just driving. I don't want to do plugs every 18-24 months... so, in went the NGKs.

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Old May 28, 2004 | 12:35 AM
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Default Re: Which Plugs to use--- LT4 --- HELP (96POLO)

NGK TR55's

:iagree:

:iagree:

:iagree: :D


:iagree:

:iagree: Yep! :iagree: :iagree:
:withstupid: :thumbs:
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To Which Plugs to use--- LT4 --- HELP

Old May 28, 2004 | 06:49 AM
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Default Re: Which Plugs to use--- LT4 --- HELP (GS057)

NGK TR55's

:iagree:

:iagree:

:iagree: :D


:iagree:

:iagree: Yep! :iagree: :iagree: :withstupid: :thumbs:
:iagree:
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Old May 28, 2004 | 10:59 AM
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Default Re: Which Plugs to use--- LT4 --- HELP (FX GS)

Anyone try the Bosch Platinum + 4's?
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Old May 28, 2004 | 11:50 AM
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Default Re: Which Plugs to use--- LT4 --- HELP (96CollectorSport)

yeah, I have the +4s. They seem alright, I've had no problems and the car idled better with these than the champions. But if any spark plug is on its last leg, any new spark plug will enhance performance. I'm thinking about changing to cutback plugs - I'll determine that this weekend when I check the plugs. :seeya
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