DrX

iTrader: (6)

From what I have been reading, it looks like I should ditch the expensive factory double platinum NGKs and replace them with the cheapo V-power TR55 or TR6 plugs. Platinum and iridium are not recommended with FI. Is this correct and how often should the TR55's be replaced? Also, should I alter the OE .060 gap with FI?

http://www.ngk.com/results_app.asp?AAIA=1423886

WILWAXU

iTrader: (6)

Lets try this in the FI section

Wolfee

iTrader: (3)

Most people seem to run NGK TR6's gapped at or around .032.
Wolfee

Fire67

iTrader: (3)

You shouldnt run platinum for sure... Ive been running the TR6ix (iridium) in my LT1 for quite a while with no problems.
The platinums get too hot, start glowing and melting, causing detonation and/or engine damage.
I always run .030 -.035 gap.
The cheapo V-powers also work well, they just dont last as long.

onefastss223

iTrader: (14)

TR-6's here...

DrX

iTrader: (6)

Thanks. TR6's at .035 seem to be the consensus here and on performancetrucks.net

V8_DSM_V8again

Those should be good.

I run a BR8ES on really high boost engines. Non projected plug

Pro Stock John

iTrader: (34)

5-8 psi? NGK TR6's gapped at .035 would be the ticket. Some might go for .040-.045 to get that little shake out of the idle but you can experiment around.

I run TR8's @ .030 in my current setup.

fastlt1

iTrader: (4)

What is the part number for the TR6s for LT1? So the auto parts store can look it up.

V8_DSM_V8again

http://www.ngk.com/results_cross.asp?pid=TR6&x=43&y=6

You can also run

BR7EF
BR6EF
BR7EFS


Probably not enough boost for that.

http://www.ngk.com/search_char.asp?t...=39&action.y=9

DrX

iTrader: (6)

8-10 psi

Pro Stock John

iTrader: (34)

NGK TR6's are still fine.

94m6Z28

what about NGK iridums?

MY99TAWS6

iTrader: (3)

Ngk iridiums are fine. 6ix should do the trick. Careful when you gap iridiums though.

4SFEDZ

iTrader: (6)

im runnin tr6's at 30 they seem fine