NGK TR55s Q.
Factory says .040 but those are for the iridium plugs. There is another thread in the General Maint. section about this and I've seen people say anywhere from .36-.50. So I don't know but would like to as I'm going to be installing the same plugs as you in about a week.
Originally Posted by bene
Are these plugs gapped for factory spec? I'm about to install mine today as I type these words. 
Most were right in that area right out the box, but I'd check them all.
Factory non-iridium gap is .060, per the fender sticker on my car. I like my tr-55's at .055, as do alot of people on the boards. They come at about this gapping, but it's always good to run through and check them all.
BTW - Dab some anti-sieze on the plugs too, not a whole lot though.
BTW - Dab some anti-sieze on the plugs too, not a whole lot though.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'
Brett Foote
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
