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

spark plugs?

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Old Aug 14, 2007 | 08:52 PM
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Default spark plugs?

What kind of plugs should i get?
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Old Aug 14, 2007 | 09:50 PM
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Mine came with Bosch platnums, it runs great with them, but i c allot of folks reccomending the NGKs.
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Old Aug 14, 2007 | 10:19 PM
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i use ngk tr55 they work good for me
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Old Aug 14, 2007 | 10:26 PM
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Ngk Tr55ix
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Old Aug 14, 2007 | 10:26 PM
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They work wonders and are the best that I have seen ")!
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Old Aug 14, 2007 | 11:52 PM
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my car ran best on AC DElco's
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Old Aug 15, 2007 | 01:42 AM
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I use ngk because copper > platinum imo.

Can't really go wrong with either though.
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Old Aug 15, 2007 | 01:54 AM
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ngk tr55 i had those and i just went to 2nd to best Autolite and i think i fouled em out... gettin a Random Cylinder Misfire
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Old Aug 15, 2007 | 02:59 AM
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Default just don't try them autolites hahaha

NGK's are great like he said but I run A/c delco's They never fail me.
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Old Aug 15, 2007 | 03:14 AM
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Originally Posted by Fbodynightmare
NGK's are great like he said but I run A/c delco's They never fail me.
You never even changed them today like you were supposed to, while i was replacing heads on mine you were diggin in your nose
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Old Aug 15, 2007 | 03:22 AM
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Default plugs good, gap bad.

retarded people working on motors is like the special olympics even if you win your still retarded... I check the plugs they were good but the ******* gaps were off .10
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Old Aug 15, 2007 | 03:27 AM
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Well you had the new ones so i woulda done it if i was you.
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Old Aug 15, 2007 | 07:33 AM
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Autolite 106, cheap and work great
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Old Aug 15, 2007 | 12:05 PM
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Are you supposed to gap the NGK TR55 plugs at .055? That's why they call them TR55?
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Old Aug 15, 2007 | 12:47 PM
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no I am for sure horse-power that it is the name of the plug just like the TR55IX that I have those are the iridium ones. You want to gap your plugs at .55. Devin
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Old Aug 15, 2007 | 09:22 PM
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Platinum and iridium are ONLY for longevity.
Multiple electrodes are a sales gimick.
For a stock motor NGK TR55 (or TR5 regapped as they come with a small gap) are good as is Autolite 106. NGK as the number goes up the plug gets colder for example a TR6 is good for an LT1 on juice. Autolite a 104 is good for modified motors with higher compression and a 103 is better for nitrous.

Beware of how folks evaluate plugs, most people put fresh plugs in and say whatever they just bought it great, neglecting to consider they probably replaced the old ones because they were worn.
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Old Aug 16, 2007 | 12:10 PM
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So is a NGK TR55 or autolite 104 better for a N/A high compression motor?
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Old Aug 16, 2007 | 12:45 PM
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john your a special kid. I always tell you to use NGK tr55's but if your spraying use tr66 but i never would use iruduim NGK's they ran like crap in my car but we have different applications.
P.S. you don't know who i am huh hahaha.
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Old Aug 16, 2007 | 12:46 PM
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Originally Posted by horse-power
So is a NGK TR55 or autolite 104 better for a N/A high compression motor?
yes. i have 11.7 compression and i use the tr55's when i'm not spraying and tr66 when i am spraying
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Old Aug 16, 2007 | 12:49 PM
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I run NGK tr55. I ran Autolite 104's and had a problem with fouling them. I have just a bolt on car and the 104's were probably to cold of a plug for my application.
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