01FASTWS6

Alright, after searcing around, I still cant find what i need.

I bought NGK TR55IX plugs for my 01 bird LS1. I noticed on their site, and their book that this plug does not come up for this motor/year yet i see other guys running them.

What I'm trying to make sure is if it is ok to run these plugs, and what gap? It looks like they have a shorter reach then the "reccomended" plugs.

Motor will have a TrickFlow Stage 3 Cam, full length headers/full exhaust. No spary (yet).

Thanks in advance!

baxsom

iTrader: (6)

not sure what the IX is but most people run a TR55. it doesnt come up because the oem plug is iridium

88gtman

the IX are iruidium. They are supposed to be pregapped and recommend not adjusting the gap. The was a service bulletin for our cars changing the recommended gap to .40 instead of .60 Regaping iridium plugs could damage the tip.

wildcamaro

iTrader: (15)

I always use the factory ac delco iridiums just because the gap is smaller than 60 thousandths to account for increase in gap over time....but to answer your ? You are good to go

mark21742

I run and swear by standard old Autolite 103's

MT0911

I run the NGK TR55's and I gapped them at 55. You should be completely fine with these. But when you add that spray you'll need some colder plugs (TR6's).

Z28/2002

iTrader: (27)

I'd use a BR6EF if a 150+ shot

MT0911

Sounds good - if running a 150 shot the BR6EF would be great or even a BR7EF since the OP is saying he'll be cammed. You're right though, the non-projected tip on those would be safer to run with nitrous when that much more power is had above stock. Good catch.

baalic

iTrader: (8)

Ac delco bought ngk so id say your goid to go with ngk if you trust delco.


I think i should recheck my gaps, but im pretty sure im
Around .53

01FASTWS6

Thanks for the replies guys.

Has anyone re-gapped the iridium plugs? If so, what is the "ideal" gap for my current setup?

baalic

iTrader: (8)

You dont regap the irridiums, you will more then likely hurt your plugs more then doing them good.