ChicagoTransAm

NGK TR55s without a doubt... Anything else is just pissing away money

dopy

NGK tr6ix (I'm love'n It)

at23520

iTrader: (1)

FOR REAL!!!!!!! i checked the densos, ac's & ngk, & by far ngks are the best deal.

Midnight

iTrader: (19)

TR55's for the win

TLUZLS1

iTrader: (6)

The new ac delco iridiums are the best plugs, but ngks are the better choice because they are cheaper. I run the ngk tr55s with msd 8.5 wires.

Sigforty

NGK TR55s here on my Z06! They are working great after 20000 miles so far although I should be changing them shortly.

at23520

iTrader: (1)

which tr55s? v-power, platinum, irridum, or double platinum?

ChicagoTransAm

None of the above... standard TR55s

at23520

iTrader: (1)

ok, thanks

according to ngk.com, v-power is the standard- or the cheapest they list

Ripper415

iTrader: (6)

I want to buy new plugs too. I was looking at the NGK 55's that you guys all raved about and found 2 different kinds. Theres the NGK V-Power which are $2.39 each and theres the NGK G-Power that are $2.99 each. The only difference between the two is that the the G-Power have a platinum tip and the V-Power have a Nickel alloy. I'd gladly spend an extra 60 cents a plug to get a better product, if the platinum ones really are better. Any info on these?

Ripper415

iTrader: (6)

I just found these descriptions on another website. It doesnt make my decision any easier since both sound good lol

These G-Power Platinum spark plugs deliver the power and quality you expect from NGK. The fine pure platinum electrode tip remains virtually unchanged and reaches self-cleaning temperatures to deliver longer durability and optimum performance. Compared to conventional plugs, G-Power delivers better starts, superior acceleration and greater fuel economy.

These NGK V-Power spark plugs offer economical performance for nearly any automotive application, and are the only plugs with NGK's V-Groove technology. They enhance ignitability, lower the voltage requirement of ignition systems, and have strong anti-fouling characteristics, while improving fuel mileage and acceleration performance. The V-Power plugs also are highly durable against electrical and chemical wear, making them a long-life replacement plug. Because of the V-Groove, the spark occurs at the edge of the center electrode. So heat is not absorbed by the electrode itself. This allows the flame kernel to expand quickly and efficiently for a complete burn and great performance.

-Freak-

iTrader: (6)

found this while wake boarding on the internet.

**Note: Heat ranges are determined by NGK standards. Not all plug manufacturers follow the same guidelines.

***Note: List is intended for reference only. Please consult with head mfg. and ignition mfg. for proper gap.

****Note: NGK IX and Denso plugs are Iridium.



LS1 Stock and AFR
Thread – 14mm
Reach - .708”
Socket – 5/8 hex
Seat - Taper
Stock Heat Range: 5
Gap: .060
Plug: NGK TR55 (stock number 3951); NGK TR55IX (stock number 7164); Autolite 764; Denso IT-16 (stock number 5325)

Nitrous (one step colder)
Heat Range: 6
Gap: .035 - .038
Plug: NGK TR6 (stock number 4177); NGK TR6IX (stock number 3689); Autolite 103; Denso IT-20 (stock number 5326)

Nitrous (two steps colder)
Heat Range: 7
Gap: Consult
Plug: NGK BR7EF (stock number 3346); NGK TR7IX (stock number 3690); Autolite AR94; Denso IT22 (stock number 5327)

Nitrous (two and a half steps colder)
Heat Range: 8
Gap: Consult
Plug: NGK R5724-8 (stock number 7317); NGK TR8IX (part number 3691); Denso IT-24 (stock number 5328)

Nitrous (three steps colder)
Heat Range: 9
Gap: Consult
Plug: NGK R5724-9 (stock number 7891); Autolite AR93; Denso IT-27

Nitrous (four steps colder)
Heat Range: 10
Gap: Consult
Plug: NGK R5724-10 (stock number 7993); Autolite AR92


LS1 w/ Edelbrock and Dart Heads
Thread – 14mm
Reach – 3/4”
Socket – 5/8 hex
Seat – Gasket

Stock – MFG Recommendations: approx under 9:1 compression
Heat Range: 4
Gap: Consult ignition mfg.
Plug: NGK FR4 (stock number 5155); NGK BKR5EIX (stock number 6341); Autolite 3926; Champion RC12YC (stock number 71); Denso IK16 (stock number 5303)

MFG Recommendations: approx 10.5:1 compression
Heat Range: 5
Gap: Consult ignition mfg.
Plug: NGK FR5 (stock number 7373); Autolite AR3924 (Racing Plug); Autolite 3924; Champion RC9YC (stock number 2075); Denso K20PR-U (stock number 3145); Denso IK20 (stock number 5304)

MFG Recommendations: approx 11:1 compression
Heat Range: 8
Gap: Consult ignition mfg.
Plug: NGK R5672A-8 (stock number 7173); Autolite AR3911; Champion C63YC (stock number 796); Denso IQ24 (stock number 5314)

MFG Recommendations: approx 12:1 compression
Heat Range: 9
Gap: Consult ignition mfg.
Plug: NGK R5672A-9 (stock number 7405); Autolite AR3910; Champion C61YC (stock number 785); Denso IQ27 (stock number 5315)

MFG Recommendations: approx 13:1 compression
Heat Range: 9 - 10
Gap: Consult ignition mfg.
Plug: NGK R5671A-9 (stock number 5238); Autolite AR3933; Champion C59CX (stock number 296); Denso IK27 (stock number 5312)

MFG Recommendations: approx 14:1 compression
Heat Range: 10
Gap: Consult ignition mfg.
Plug: NGK R5671A-10 (stock number 5820); Autolite AR3932; Champion C57CX (stock number 295); Denso IK-31 (stock number 5321)

**NOTE: Use chart for static compression and adjust heat range for nitrous use accordingly.

http://www.ls2.com/forums/showthread...12#post5813112

sickws698

iTrader: (2)

Ngk .....

at23520

iTrader: (1)

i got my ngk v-power plugs today for$1.59 ea @ o'reillys

The PAT WS6

iTrader: (14)

ngk tr 55s got my vote if u run n20 stick with tr6's

98SS1LWEE

iTrader: (25)

Anybody ran the bosch Platinum's, you know... The four ways, or two -way's???

LS14urStang

I ran them on my old honda. Can't really say anything bad about them....but they didn't make any noticeable improvements either. Never had them on the LS1. Probably just a waist of money.

02WS6Bird

iTrader: (2)

the question i have is after how much power N/A when are the TR55's no longer good enough and what plug should i go to? And after how much nitrous will i need something more than the TR6?

I run TR55's gapped at .055 in both my cam only car and my Stock vehicle

fatjet00

Just wanted to remind you when changing plugs to put a little anti-seize on the threads of the plug. I always use it, especially when screwing a steel plug into an aluminum head. Don't forget the die electric grease on the plug boot or terminal too.

SOULPOWER

what about the ACDelco RAPIDFIREŽ Performance Platinum Plug??