JRSSTOY

Im trying to get some advice from all you guys Im about to replace my spark plugs on my 98 SS and I dont know if should stick to the stock ACDelco or if theres any thing better out there?

crizain

NGK TR55's I have always run these, a bit more expensive but no reason to skimp on basic maintenance items.
Rob

SStheBest

iTrader: (2)

either NGK TR55's or the ones im gonna use in a few weeks are the AC Delco iridium plugs....BEST FOR THE LS1's....damn $7+ bucks a plug though

WAHUSKER

iTrader: (4)

I run TR55s, and plan to try a set of TR6s to see if the cooler temp helps any. I've seen charts showing the Denso Iridiums are "the best plug" becuase the have the lowest misfire rate of any plug on the market. (so you get less knock) But I tried a set when I was having some KR issues, acutally 2 - they came stock in my car, and still had knock. So at 1/4 the price, I now run the NGKs.....

JRSSTOY

Do you know how much these NGK plugs are because I know the ACDelco are about & dollars a piece?

ddelallata

iTrader: (2)

NGK tr55 are about 2 dlls a piece or less at Advance Auto Parts.

Red99TransAm

I put in the Bosch platinum +4 and they have been working great so far. Cost me $56, if I remember correctly? But so far I have no complaints.

SStheBest

iTrader: (2)

those are the worst plugs u can buy for a car....MUCH LESS AN LS1!!! ...id get those outta there ASAP!!!

SStheBest

iTrader: (2)

ask anyone about bosch plugs and their gonna say the same thing.....i think there is a search on this.....

RedHatRdRacer

iTrader: (25)

TR55 for motor, TR6 for 150+Nitrous

here there 1.49 per plug

Schantin

iTrader: (6)

I installed NGK TR55 plugs about 200 miles ago and have been happy with the performance so far. I'd stay away from the platinum plugs and replace the origonal platinums with either standard plugs (aka the TR55's) or an iridium plug. The platinum doesn't seem to hold up well under WOT conditions.

If changing spark plugs is a fate worse than death for you, get the iridium. I had these on my 97 LT1 and was happy with them. If you don't mind changing plugs every 30K miles, the best bet is the "normal" NGK TR55's. A spark plug change can be accomplished with the right tools in about an hour on a LS1. This is my suggestion

BTW, the NGK TR55's are WAY CHEAPER than the AC Delco factory Platinum plugs. I got all 8 plugs for under $20.

Schantin
2002 Camaro Z28 M6

ace68

iTrader: (15)

there is a new plug out there that was dyno tested against the tr's and mad 3 rwhp.

01_SuperSlow

iTrader: (7)

Denso Iridiums do not come stock on LS1's.

The stock plugs are some other type of Denso plug, I believe they are some type of platinum plugs.

I know this because my SS and 5.3 Silverado came with some Denso plugs, and when I compared them to the new iridium plugs, they had a different tip and the stock ones do not say "iridium" around the plug either.

VTC_WS6

iTrader: (9)

What gap do you guys run on your TR55's? I installed a set during my LT install Sat. but I didn't have any gap info for the LS1 on hand so I had to 'guess'. I ended up running a .035-.037 gap, I hope i'm somewhere in the neighborhood!

Coy

iTrader: (4)

wow that is damn far off. Between .050-.060.

White.Lightning

iTrader: (53)

AC Delco plugs and oil filter. Always have always will.

Andy

ZodiacZ28

iTrader: (3)

I ran tr55's and found that on my header swap that one of my plugs was fouled out. Im going to change over to ac delco and see how it goes.

Phoenix 5.7

iTrader: (7)

should i get the TR55 regular or the iridium ones?

hogs

G'Day,
First post fellas so be kind to a boy from OZ!
NGK TR55's seem to get a good report, but I am not sure if they have an equivilent here. A lot of the 1/4 mile boys use NGK BPR6EF??
Anyone know if this is a similar plug?

Cheers,

Hogs,

"GO HARD OR GO HOME"

FedZ

iTrader: (5)

Definately the NGK TR55 for the money. Go with iridiums if you have the extra $$