This is the first time i have checked and changed the spark plugs on my cobalt and the stock plugs showed around a .35 gap. I read about the gapping of plugs in another thread saying that it should be .45 stock and only should be .35 if you're running around a 2.6 inch pulley. All this time i've been driving i haven't seen much for performance loss. (the car tears some serious ass, especially after 3500 rpm, header and downpipe not installed yet)

I ended up changing the plugs with a step colder NGK BKR7E-11 copper plugs because of my stage 2 kit, header, downpipe and intake and i gapped it to .40 because i didn't want to mess too much with the current performance.

I was wondering what spark plug gaps came stock on other people's cars

 

haven't visually checked but the manual says it should be .039 for the ss/sc

 

yea mine were a .035 too.

 

Mine were .39 stock , with the brk7e's i'm at .35, @.40 my car didn't like it .