plugs and plug wires - The 1947 - Present Chevrolet & GMC Truck Message Board Network

redracer95 · 10-23-2014, 09:30 AM

I recently picked up a 2011 LT 4x4 with a 5.3 and 7900 miles on it. would there be any advantage to switching out the sparkplugs and plug wires to a diamond fire type plug and getting a set of bigger plugwires? ie MSD or summit brand. or is it a waste of money?

95 S_Trucker · 10-23-2014, 10:50 AM

Yes, that would be a waste in my opinion. A tune up isn't due until 100k and ac delco iridium plugs and wires work best.

The ignition system on these trucks is so good, you will not notice any kind of difference with aftermarket.

piecesparts · 10-23-2014, 01:59 PM

Every person for their own. MSD wires carry less resistance than most factory wires and as for the plugs, I put a new set of iridium tipped plugs in my 11 5.3 at 70,000 miles. Along with the aftermarket tune, it would be hard to say that the difference was that noticeable, but I like it.

68C15 · 11-27-2014, 05:25 PM

Non-OE style plugs (e3' etc.) will have an impact on how it runs. Just not the way you want it to. But on the good side, 5.3 coils are easy to replace

The only reason to upgrade to low resistance wires, fancy plugs, or high power coils is if you have added boost. Otherwise GM has nailed down the ignition system on these and "Joe-Blow" can't make it any better

redracer95 · 12-07-2014, 04:49 PM

cool thanks. in otherwords leave it alone.

10-23-2014, 09:30 AM	#1
redracer95 Registered User Join Date: Dec 2010 Location: oak harbor, ohio Posts: 133	plugs and plug wires I recently picked up a 2011 LT 4x4 with a 5.3 and 7900 miles on it. would there be any advantage to switching out the sparkplugs and plug wires to a diamond fire type plug and getting a set of bigger plugwires? ie MSD or summit brand. or is it a waste of money?

10-23-2014, 10:50 AM	#2
95 S_Trucker Registered User Join Date: Oct 2009 Location: . Posts: 2,187	Re: plugs and plug wires Yes, that would be a waste in my opinion. A tune up isn't due until 100k and ac delco iridium plugs and wires work best. The ignition system on these trucks is so good, you will not notice any kind of difference with aftermarket.

10-23-2014, 01:59 PM	#3
piecesparts Parts and more parts Join Date: Nov 2003 Location: Lebo, Kansas (middle of nowhere Posts: 6,821	Re: plugs and plug wires Every person for their own. MSD wires carry less resistance than most factory wires and as for the plugs, I put a new set of iridium tipped plugs in my 11 5.3 at 70,000 miles. Along with the aftermarket tune, it would be hard to say that the difference was that noticeable, but I like it. __________________ Frank

11-27-2014, 05:25 PM	#4
68C15 blood type; Retumbo Join Date: Jan 2004 Location: next to my reloading bench Posts: 10,269	Re: plugs and plug wires Non-OE style plugs (e3' etc.) will have an impact on how it runs. Just not the way you want it to. But on the good side, 5.3 coils are easy to replace The only reason to upgrade to low resistance wires, fancy plugs, or high power coils is if you have added boost. Otherwise GM has nailed down the ignition system on these and "Joe-Blow" can't make it any better __________________ Man rule #77...if you own a 67 stepside with a caddy 472 you will never be in danger of loosing you man card

12-07-2014, 04:49 PM	#5
redracer95 Registered User Join Date: Dec 2010 Location: oak harbor, ohio Posts: 133	Re: plugs and plug wires cool thanks. in otherwords leave it alone.



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