Spark Plug Question

thdrill · May 22, 2009

I know there is another posting here about the gapping of the plugs but don't want to hijack it. Been looking to replace the plugs (and will probably regap to the 0.35) but in looking have noticed the multitude of options. The question I have is regarding the prongs (pardon the mini-stroke). Are two and three really better than just one, does it really make as much of a difference in the "burning" of fuel as they are pushing?

Thanks

Paul

dec322 · May 22, 2009

I think most people will say that it is a waste of money.

I bought some of the bosch 4 somethings (can't remember the name) when I was a kid and installed them in 89 cutlass calais quad 4. I didn't notice a difference in anything except my wallet. $8 a plug for nothing but marketing.

WHITEOUT · May 22, 2009

I put the Bosch +4 platinums in my tahoe, and actually got worse gas mileage then before. I then put the OE AC Delcos back in and am getting great gas mileage now. Noticed a huge improvement in gas mileage, almost a full mile per gallon. You will pay extra for the OE plugs, almost $6 a plug, but totally worth it. GO WITH OE PLUGS. one of the few things I would say go, OE. and they are pre gapped.

thdrill · May 22, 2009

The next question would be - platinum verses iridium?

road1will · May 22, 2009

go with the NGK TR55...and gap to .040

tybardy · May 23, 2009

yes.... NGK TR55s and gap to .040... anything else and your wasting time and buying into hype

road1will · May 23, 2009

thdrill said:
I know there is another posting here about the gapping of the plugs but don't want to hijack it. Been looking to replace the plugs (and will probably regap to the 0.35) but in looking have noticed the multitude of options. The question I have is regarding the prongs (pardon the mini-stroke). Are two and three really better than just one, does it really make as much of a difference in the "burning" of fuel as they are pushing?

Thanks

Paul

Just noticed you said .35...thats a serious gap man

thdrill · May 23, 2009

road1will said:
Just noticed you said .35...thats a serious gap man

decimal in wrong place .035 or .04

tybardy · May 23, 2009

.035 is used when you have forced induction, NO need for an 035 gap under normal aspiration

road1will · May 23, 2009

thdrill said:
decimal in wrong place .035 or .04

I figures as much. I was messing with you.

YNOT · Jul 26, 2009

my ngk's came at .038, but how the hell do you get that back passenger side one out.

tybardy · Jul 26, 2009

YNOT said:
my ngk's came at .038, but how the hell do you get that back passenger side one out.

HAHAHAHAHA with a lot of swearing, a little knuckle blood, and some added patience....

that is the one that pisses everyone off, just keep playing with different combination's of ratchet sizes and depths and such, it DOES come out.

YNOT · Jul 26, 2009

im still trying to get the wire off......lol.

i have a plug wire boot plyers, but i can't get it into position on that one.

dec322 · Jul 26, 2009

I used a pair of vice grips to get that plug wire off. Be careful not to squeeze too tight. The main thing for me was to get an angle on it for some leverage. It sucked and that is why it was last on my list.

NJ04HOE · Jul 26, 2009

YNOT said:
my ngk's came at .038, but how the hell do you get that back passenger side one out.

I just did mine about 2 weeks ago and that's was the one that pissed me off. I ended up jacking up the truck just enough to get the tires off the ground and reaching into the passenger side wheel well with the ratchet and getting it out through there and putting the new one in the same way.

YNOT · Jul 26, 2009

i ended up using a $6 plug wire boot plyers, but i still cut my thumb open....lol

TheFuzz · Jul 26, 2009

And THAT my friends, is why I use the OEM AC Delco iridium plugs. They are rated for 100K miles. I replaced my at 100K, and probably won't have to do it again for the life of the truck. Thank GOD...it's a PITA, as most of you know.

tybardy · Jul 26, 2009

yes most people here are around 100k, which is why they are changing their pluggs... i wasnt planning on doing this again but since i am getting new wires i feel like i can drop $20 on a new set of plugs and be done with it.

TheFuzz · Jul 26, 2009

I'll end up getting aftermarket wires for the 6.0 since I'll be running LT's with it, but for now I'm just running the stock wires. I replaced them last year when I did the plugs just for peace of mind. The old ones weren't too bad but I figured its one less thing to worry about if I did it then.

tybardy · Jul 26, 2009

yea I'm going with some 8.5mm wires too, prepairing for the LT's

Spark Plug Question

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