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I can't find the info i need......spark plugs

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Old Dec 3, 2006 | 09:27 AM
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Default I can't find the info i need......spark plugs
Getting ready to my plugs and wires on the PA and it has the stock pulley. I bought the TR55'* and i was needing to know what gap I need for these things.

By the way on the box they are called TR5 i just want to be sure that is the same thing.
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Old Dec 3, 2006 | 09:31 AM
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Stock gap is .060
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Old Dec 3, 2006 | 09:33 AM
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what about the part number on the box...........tr5 should it say tr55????
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Old Dec 3, 2006 | 09:34 AM
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What does the actual plug say, let'* put the box aside.

I believe they MIGHT be close or the same, let'* realize it'* early and I'm sniffing aerosol fumes for a project.
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Old Dec 3, 2006 | 09:44 AM
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plug has tr5 on it to........i told the morons that i needed tr55'* for my park ave.
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Old Dec 3, 2006 | 09:49 AM
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Alright ... jump online and do a quick cross reference at any of the parts stores. If that doesn't work ... go to NGK'* website and look up the differences.
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Old Dec 3, 2006 | 10:00 AM
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its in the preset gap...........its in the .3x'* for the tr5 and its .5x for the tr55
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Old Dec 3, 2006 | 10:02 AM
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We don't understand what a 3x or 5x is without looking up the info.. can you please elaborate as to what this means. Thanks
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Old Dec 3, 2006 | 10:04 AM
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sorry......

They are not a hotter plug actually, they are the same heat range as stock and TR55s. The only difference between a TR5 and a TR55 is that the TR55s come with a preset gap of .055 to .059 while the TR5s come in closer to .039. They do this because you should only change the preset gap of a plug by plus or minus ten thousandths. So if you wanted to run a .035 gap you wouldn't really want to use the TR55. And on the flipside if you wanted a .060 gap you'd be best running the TR55s.

Since most LS1s tend to like .050, you could run either plug and it wouldn't cause a problem. I say go with those TR5s and run anywhere from a .045 to .050 gap. I ran TR6s at .044 when I ran my 12.68 time and my car seemed to like it.
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Old Dec 3, 2006 | 10:07 AM
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Originally Posted by BillBoost37
Alright ... jump online and do a quick cross reference at any of the parts stores. If that doesn't work ... go to NGK'* website and look up the differences.
From the NGK web site.....

TR5

BUICK ELECTRA PARK AVENUE (1987) 3.8LV6
BUICK ELECTRA PARK AVENUE (1986) 3.8LV6

TR55

BUICK PARK AVENUE ULTRA (2005) 3.8LV6
BUICK PARK AVENUE ULTRA (2004) 3.8LV6
BUICK PARK AVENUE ULTRA (2003) 3.8LV6
BUICK PARK AVENUE ULTRA (2002) 3.8LV6
BUICK PARK AVENUE ULTRA (2001) 3.8LV6
BUICK PARK AVENUE ULTRA (199 3.8LV6
BUICK PARK AVENUE ULTRA (1997) 3.8LV6
BUICK PARK AVENUE ULTRA (1996) 3.8LV6
BUICK PARK AVENUE ULTRA (1995) 3.8LV6
BUICK PARK AVENUE ULTRA (1994) 3.8LV6
BUICK PARK AVENUE ULTRA (1993) 3.8LV6
BUICK PARK AVENUE ULTRA (1992) 3.8LV6
BUICK PARK AVENUE ULTRA (1991) 3.8LV6
BUICK PARK AVENUE ULTRA (1991) 3.8LV6
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