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05-20-2017, 09:41 AM
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#1 |
 Drives: 2011 Camaro SS/RS M6 Join Date: Oct 2010
Location: Beaumont, TX
Posts: 419
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NGK TR5IX spark plug gap
Getting ready to install a set of NGK TR5IX plugs & I need to know what gap I should go with. I keep finding conflicting info. Should they be .040 or .060? This is on an NA LS3, no boost, stock cam.
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05-20-2017, 09:54 AM
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#2 | |
 
Drives: 2015 Camaro SS Join Date: Sep 2011
Location: Jacksonville, Fl
Posts: 713
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Quote:
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2015 Camaro 2SS Cam/Heads/FBO 498/447 SAE |
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05-20-2017, 11:20 AM
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#3 |
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Drives: 2011 Camaro SS/RS M6 Join Date: Oct 2010
Location: Beaumont, TX
Posts: 419
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The one that came out were .035-.037
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05-20-2017, 01:17 PM
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#4 | |
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Drives: 2015 Camaro SS Join Date: Sep 2011
Location: Jacksonville, Fl
Posts: 713
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Quote:
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2015 Camaro 2SS Cam/Heads/FBO 498/447 SAE Last edited by 07-SRT; 05-20-2017 at 02:03 PM. |
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05-20-2017, 01:30 PM
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#5 |
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Drives: 2011 Camaro SS/RS M6 Join Date: Oct 2010
Location: Beaumont, TX
Posts: 419
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The old plugs didn't look too bad
 I know you have to be extremely careful when gapping iridium plugs, but out of the box, the NGK's were .020-.025. That's way too tight. I opened them up to .040. It idles much smoother now. |
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05-20-2017, 01:33 PM
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#6 |
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Drives: 2011 Camaro SS/RS M6 Join Date: Oct 2010
Location: Beaumont, TX
Posts: 419
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I used the Hinson 25 ohm/ft wires:
 They were about $65 on Amazon. |
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05-21-2017, 09:40 AM
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#7 |
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old school chevy rodder
Drives: 2013 2SS/RS Manual,DM exhaust,CRT Join Date: Jul 2012
Location: Oregon
Posts: 5,587
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Yes its .040 and the 6s and 55/ 5s of ngk and most likely the 7s even are .039 I think and close enough to call the .040 out of the box supposedly..your testing it showed different though...some like larger gaps for more spark area but that's a hot rod thing you should be fine with most all SBC and BBC running .035 gaps for their plugs for like 75 years mostly unless modified heavily.
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 2021 Wild Cherry ZL1 A10, Sunroof, Data, Carbon, Nav, RotoFab Dry CAI, Elite x2, Borla ATK, Driveshaft shop |
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09-05-2020, 10:10 AM
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#8 |
 
Drives: 77corvette/2011blkcamaro Join Date: Oct 2009
Location: Deer Park Long Island
Posts: 80
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What is the standard gap from the factory
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09-05-2020, 09:09 PM
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#9 | |
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Tri-County Camaro SWFL
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Quote:
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09-06-2020, 03:03 AM
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#10 | |
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waiting at the tree
Drives: SIM 2010 2SS/RS A6 Join Date: Apr 2013
Location: Niagara Falls
Posts: 3,152
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Quote:
They recommend not gapping electrodes on Iridium plugs as you can damage them. I installed mine as is out of the package with a little anti seize on the threads.
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2010 2SS/RS A6 ZL1 Rims
60ft 2.03 13.08 at 107.82 (4/28) 2009 Pontiac G8 3.6L the DD |
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