teamfbody

General question what are the best brand spark plugs for a ls1 motor

lvbroham1

NGK TR55's

Jon@Texas-Speed

iTrader: (18)

For an NA combo I would go NGK TR55's. You will have to replace them more frequently than say a Delco but for the price and performance, you can't beat them. If you plan on putting a small power adder on the car, I would change to a TR6 from NGK. Let me know if you need a set. We have several of both on the shelf.

Jon

alamantia

iTrader: (10)

I put the platnum NGK TR55's in my car, I wonder how long they will last.

See link...
https://ls1tech.com/forums/generatio...omend-why.html

LS12Fast4U

iTrader: (1)

Well if your LS1 is a picky bastard like mine you will run the stock AC Delco 41-110. I had tried the NGK's in my 99 T/A and had no issues. Used them in many other cars as well. Well got my 04 GTO and installed the NGK's and it ran like crap. Had random miss fire codes and so i bought some more plugs ( same NGK's ) still doing it. Changed wires. Kept doing it. Said screw it bought the AC Delcos and never had a miss fire since.

blk/slvr02ss

iTrader: (21)

I put them new E-3 plugs in my 02 SS and they seem to work great and i get about 22mph in the city.

buddha845

iTrader: (3)

my vote is for the NGK TR5IX iridiums

mark21742

I run and recomend regular old plan autolite 103s

Bryceslu

iTrader: (4)

x2! the platinums though.

Black 99 Bird

iTrader: (31)

Thats what I run ^.

bwilde86

iTrader: (5)

i have the NGK TR6s...i will be installing them tomorrow. does anyone know off the top of their head what the gap is supposed to be? if i remember correctly its .5 but could be wrong.

Z28/2002

iTrader: (27)

I've got my 6's at .038

00CaliforniaZ28

iTrader: (11)

Same here. My car didnt seem to like the TR55s after running the Iridiums for a while, so switched back to the Iridiums and seems like she was happy again.

jc98ss

iTrader: (13)

i went with ac delco iridiums gapped at.040.....no complaints

Damian

iTrader: (89)

TR55's, and they're $1.89 at your local parts store.

01ssreda4

iTrader: (96)

^^^yep, I been running a .050 gap for a while with no issues.

69lemansguy

iTrader: (12)

running platinum TR55s gapped to .50, car seems to run a little smoother than it did with the regular TR55s.

xricer

Me too, no idea what my gas mileage is but it seems a little better

Mike Morris

iTrader: (55)

AC Delco 41-110
at .50 gap.

Roxas

iTrader: (88)

I had NGK's on my Grand Prix (the beater) and it ran crappy. I switched to Autolites and it smoothed out. I'll be using AC Delco's on the T/A though