How do I gap new ac delco spark plugs

[anthony mendoza]

what centimeters or millimeters do I get new spark plugs for my 87 Buick grand national I don't know what number to use to gap it someone please help

 

[pacecarta]

.035"
fyi this information is on the emission sticker that's on top of the a/c box under the hood

 

[rodruckus]

What kind of power and boost are you running? The people I know only run .035 at the track. On the street, we like to run .032, but most seem to like a tighter .028.

 

[Quick6'n'-K.C.]

What kind of power and boost are you running? The people I know only run .035 at the track. On the street, we like to run .032, but most seem to like a tighter .028.

Ummm LOL why change to a larger gap at the track? Id find new friends haha

Buy NGK UR5 spark plugs gap em to .32 and enjoy

 

[rodruckus]

Ummm LOL why change to a larger gap at the track? Id find new friends haha

Buy NGK UR5 spark plugs gap em to .32 and enjoy

Ok, son...keep blowin shit up [emoji106]

 

[Quick6'n'-K.C.]

Neat! And the reason to get a looser gap at the track is........?

Just asking

 

[Pronto]

9 second guys around here are running .022". I liked my Ur5s at .028 in my old engine. Going to try tigher.

 

[~JM~]

I'm interested in hearing about various experiences with the different plug gap dimensions.

 

[earlbrown]

I would gap them back at the parts store and exchange them for NGK's.

I've had my last shot of AC Delcos being bad out of the box about 2 years ago. Much like Delco oil filters they seems to have went to shit too.