Proper gap for plugs

[Clar2478]

I'm going to get some AL 104's and i'm just wondering what the proper gap for these are.

 

[Smokin2000gtp]

It really depends on what mods you have but you should be fine with a .055 gap.

 

[1998xGTP]

x2 it all depends on mods but a .05 gap should work fine

 

[Clar2478]

i've got a zzp pcm, thrasher intake, 3.6" pulley, 3" DP and 3" cat-back, and 180* therm

 

[t24moore]

Stock gap .065 I think. The bigger the gap without getting blow out the better.

 

[Iron Indian]

I used to run AL104s @ .054 gap when my car was more mild years ago. I now run AL103R at .050 with a bunch more work.

On my Black GTP I run AL104s @ .054 , works well....

 

[Iron Indian]

BTW, stock gap is .060 IIRC

 

[blueguy]

Yes, all GM V6's in the Grand Prix...3.1, 3.8, and 3.8 S/C are all .060" Stock. I run .050" right now on my AL103's...

 

[ryangtp89]

hmm i dont know why i got the random cylinder missfire, i use auto lite 104's and i gapped them at .055