for a full bolt on motor with no power adders. im looking at ngk, they any good? and what gap should i be looking at, any help would be great.

 

Can't go wrong with the NGKs, they are a great plug. The copper conductor plugs are cheaper, but will require quicker interval changes. The iridium plugs cost more, but have alot more life to them.

 

And from what I just read in the LS Motor Section, gap the plugs around .040 - .045 instead of the old specified gap of .060...I'm going with the NGKs I'm just like you though, trying to decide if I should go Iridium or Standard.

 

what number NGK?

 

Either the TR5 or TR55s would work for your application.