What spark plug to use?

partsman · 02-26-2009, 06:48 PM

So took a plug out of my 96 7.4 Vortec engine, it is a NGK TR55GP which is their fine point platinum plug, is this the plug to use, or what is better out there?
I am trying to add a couple pictures of the ends.

leolkfrm · 02-26-2009, 06:52 PM

last set i put in mine were the bosch twins, but good old ac work the same.

bradrhale · 02-26-2009, 07:14 PM

i have always had good luck with regular good plugs. those higher end platinums are a bit of a waste if you dont have a higher end ignition system to put out the fire. but this is just one persons opinion.

batty1214 · 02-26-2009, 08:04 PM

I have always ran the ac delco in my gm vehices........ I put one set of autolites in and they fouled in about 3 weeks...... but, I like running gm stuff on my gm vehicles....

gmctrucks · 02-26-2009, 09:38 PM

I run NGK+ plugs on my GMC and if you think those plugs are worn you should have seen mine good thing I have all MSD on my truck maybe that's why it still ran good. Now after I placed the new plugs on I still got the same gas mileage I was thinking it was going to drop since it had a bigger gap which meant more spark.

partsman · 02-26-2009, 10:55 PM

I was wondering if they were worn, they have I thought a fair amount of material on them.

Should I change them?

leolkfrm · 02-27-2009, 06:11 AM

by all means yes

batty1214 · 02-28-2009, 03:06 PM

I would anyway.

02-26-2009, 06:48 PM	#1
partsman Senior Member Join Date: Jul 2008 Location: Poco BC Posts: 83	What spark plug to use? So took a plug out of my 96 7.4 Vortec engine, it is a NGK TR55GP which is their fine point platinum plug, is this the plug to use, or what is better out there? I am trying to add a couple pictures of the ends.

02-26-2009, 06:52 PM	#2
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 4,300	last set i put in mine were the bosch twins, but good old ac work the same. __________________ 4 wheels move the body 2 wheels move the soul B.W.A.I

02-27-2009, 06:11 AM	#7
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 4,300	by all means yes __________________ 4 wheels move the body 2 wheels move the soul B.W.A.I

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02-26-2009, 07:14 PM	#3
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,018	i have always had good luck with regular good plugs. those higher end platinums are a bit of a waste if you dont have a higher end ignition system to put out the fire. but this is just one persons opinion.

02-26-2009, 08:04 PM	#4
batty1214 Senior Member Join Date: Nov 2008 Location: Vernal Utah Posts: 1,135	I have always ran the ac delco in my gm vehices........ I put one set of autolites in and they fouled in about 3 weeks...... but, I like running gm stuff on my gm vehicles....

02-26-2009, 09:38 PM	#5
gmctrucks Senior Member Join Date: Nov 2006 Location: Houston,Texas Posts: 4,030	I run NGK+ plugs on my GMC and if you think those plugs are worn you should have seen mine good thing I have all MSD on my truck maybe that's why it still ran good. Now after I placed the new plugs on I still got the same gas mileage I was thinking it was going to drop since it had a bigger gap which meant more spark.

02-26-2009, 10:55 PM	#6
partsman Senior Member Join Date: Jul 2008 Location: Poco BC Posts: 83	I was wondering if they were worn, they have I thought a fair amount of material on them. Should I change them?

02-28-2009, 03:06 PM	#8
batty1214 Senior Member Join Date: Nov 2008 Location: Vernal Utah Posts: 1,135	I would anyway.