for a stage 2 , with no other engine mods, what is the appropriate plug gap? i will be adding a JBP cold air setup after parts are all in. of coarse i have the corsa touring and gmpp exh manifold, but that should have 0 impact.

no guesses please. i was thinking about .038, but im not a tech.

 

.40 is the perfect gap for the 3" gm stage 2 pulley. Trust me bro I have tried a few different gaps and this one worked the best.

 

isnt 7 the step colder, or is it 6?

 

7 is 1 step colder

 

I run those plugs and have a couple of other mods to the stage kit. My gap is set at 0.035".

 

thx guys, im gonna run 40 to start, then go down to 38 if need be....

now, what product of NGK would you run, people?

 

when i had my stage 2 i gapped at .35 and had no problems.

 

james, that was on a gm stock stage 2 tune?
i assume that was before your meth/campbell tune.

 

ya, that was on GM stage 2 tune. I am now even smaller with my current tune

 

.035 to .040 should work fine, however each car can be different, and environmental conditions can play a role as well. I know you said no guessing, but to get it just right, you *will* have to guess and check. Anywhere in the above range should be safe, however the optimum gap may vary.