I have always been running the TR6 spark plugs since I used to spray every once in a while, so all my n/a passes were on the TR6's, but now that I sold my nitrous kit, my question is, will I see any gains if I change from TR6 to TR55/ac delco, running N/A now? I just swapped in some brand new TR6's in last month so dont know if it will help any since I'll be running N/A for quite a while now..

post up what yall think...

 

I think it won't be noticeable, I've seen it done on several trucks and E.T's stay pretty much the same. J/M .02

 

My E.T's seemed the same on the TR6's on my 5.3, didn't really notice a difference.

 

Don't think that you'll notice a difference, but since you're staying NA, I'd go with the TR55's just for the hotter spark and the theory of a more complete burn, which should = less carbon build up.

 

What are you going to gap tem too??

I've heard .06 is better for idleing and cruising economy and that .035 is better for WOT power??

Is that true?