Spark Plug Help...

[Blown2003gt]

Does anyone by any chance know the right depth of the spark plugs... i have a 2003 mustang gt with a 8lb blower.. and my buddy gave me a pair of Zex spark plus +4 made for blowers and nitrous... but compaired to the old spark plus i have it seems like the plugs would go deeper into the cylinder. just curious if anyone might have any info..

 

[trinity_gt]

I'd toss the "Zex" plugs and stick with known quantities for a blown mod: NGK TR6 gapped at ~0.035"

 

[Kilgore Trout]

+1 NGK TR6

 

[twogts4us]

I'm pretty sure I read that regardless of the thread length, they'll bottom out where they need to sit.

 

[cronin49]

I'd toss the "Zex" plugs and stick with known quantities for a blown mod: NGK TR6 gapped at ~0.035"

What he said, or Autolite 103 Coppertops.