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Thread: TR5 or TR55
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08-30-2009, 01:58 PM #1
TR5 or TR55
Hi guys I am currently running TR55s gapped at .060, and looking at alldata they have a tsb specifying 41-985s and gap of .040.
I did some more research and on sparkplugs.com they plugs shown for my 99 Z28 are NGK TR5s with a gap of .040. My question is what spark plugs are you guys using?
TIA
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08-30-2009, 02:27 PM #2
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- Aug 2009
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- VA
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WHITE- 98
Am got ngk tr55 gaped at .50 and i also heard about 40-45???????
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08-30-2009, 08:29 PM #3
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- Aug 2005
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- Thornton, CO
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- 23,773
Red Tint Jewelcoat- 2008 Trailblazer SS
TR55 at .052
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08-30-2009, 09:35 PM #4
pulstar, is this a good spark plug I have seen them in magazines, and they are 24 bucks a pop, which is rediculous imo for one spark plug. Has anybody seen any reviews on them or used them theirselves.
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08-30-2009, 09:44 PM #5
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08-30-2009, 10:36 PM #6
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08-30-2009, 10:56 PM #7
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08-31-2009, 03:56 AM #8
lol was not ever planning on paying 20 bucks for one spark plug thats insanity, but whats wrong with those plugs, whats the deal with them?
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08-31-2009, 04:33 AM #9
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08-31-2009, 04:36 AM #10
- Join Date
- Jun 2009
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- Hollywood, Florida by way of Da' Burgh
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Impulse Blurr- 2004 GTO
Tr55 .040
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08-31-2009, 08:05 PM #11
Just got through with a LT & ORY project. Car had 116500 miles on the AC Delco iridium. Granted they were worn slap ass out but for the the hassel to get them removed I decided to re-install them for another 90,000. Only problem is the cost roughly 6~7.00 dollars each.But i think that they are worth the extra money. Go ahead and get the MSD 8.5 wires as well!!!
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09-01-2009, 01:03 AM #12
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- Jun 2009
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- Hollywood, Florida by way of Da' Burgh
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- 390
Impulse Blurr- 2004 GTO
+1 on the MSD 8.5 wires. Best for the money IMO. I can take mine on and off by hand but I do recommend putting dielectric grease on the plug shafts. NOT ON THE TIP!!!
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09-03-2009, 03:35 PM #13
tr-55 .050
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09-03-2009, 05:25 PM #14
TR5 0.40 cuz they are cheap and im still basically stock
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09-04-2009, 07:01 PM #15
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