feece08 Posted June 25, 2012 Report Share Posted June 25, 2012 Either the NGK TR55ix or the ac delco iridiums for a naturally aspirated truck. Go ahead and get the msd wires instead of the Taylors. Not saying Taylor doesn't make a good wire but they are a lot more prone to breaking. whats the difference if your blown or not? Quote Link to comment Share on other sites More sharing options...
T-Bag Posted June 25, 2012 Report Share Posted June 25, 2012 (edited) whats the difference if your blown or not? The gap and heat range, for us blown guys a colder heat range spark plug is recommended, so one with a .035 gap over the stock .060 of the AC D's 41-110 or the TR55's, TR6ix are the way to go for F/I Edited June 25, 2012 by Bad Ass Silvy (see edit history) Quote Link to comment Share on other sites More sharing options...
zachm89 Posted June 27, 2012 Report Share Posted June 27, 2012 (edited) The gap and heat range, for us blown guys a colder heat range spark plug is recommended, so one with a .035 gap over the stock .060 of the AC D's 41-110 or the TR55's, TR6ix are the way to go for F/I I've never heard of anyone recommending an iridium plug for a f/i application. Always heard they still burn too hot. I've always just ran a regular old ngk copper v power plug, tr55, tr6, tr7, tr8; depending on how much boost determines which heat range plug will work best and what gap to set it at. Next go around on plugs for me will be NGK tr7's gapped to about .027 since I plan on making about 12-15psi on the street and cranking it up to 15-18 at the track. I'll also be running 116 octane at the track. Edited June 27, 2012 by zachm89 (see edit history) Quote Link to comment Share on other sites More sharing options...
15SilveradoSS Posted July 26, 2013 Report Share Posted July 26, 2013 soooo. iridium ngk tr55ix will work in my 2004 SS? haha i read someone was using the tr5ix. iam quite confused haha Quote Link to comment Share on other sites More sharing options...
JC03SS Posted July 26, 2013 Report Share Posted July 26, 2013 I have the 55 in mine they work pretty well. Quote Link to comment Share on other sites More sharing options...
Fireman31 Posted July 27, 2013 Report Share Posted July 27, 2013 (edited) The only difference between the TR5ix and TR55ix is the gap.....either one will work..... Edited July 27, 2013 by Fireman31 (see edit history) Quote Link to comment Share on other sites More sharing options...
Muggs Posted July 27, 2013 Report Share Posted July 27, 2013 The only difference between the TR5ix and TR55ix is the gap.....either one will work.....^^what he said^^ Quote Link to comment Share on other sites More sharing options...
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