Is anyone running these plugs on thier cars?

What are you experiences with these plugs?

How much colder than stock are these plugs?

I also heard they are slightly shorter than the TR6 or Autolite 103-104 plugs, Does any know how much shorter they are?


Any input would be greatly appreciated..

PS...I already tried to do a search for this under Forced Induction and came up with nothing.

Thx,
Claude

 

I ran them in my last 355 w/8lbs boost with no problems. I think they are 2 ranges colder. I am currently running NGK TR6 in the new motor. If I remember right I think the AC's were a little shorter than the NGK's

 

Ac's are good plugs I just ran NGK this time around because the store was out of stock. I believe NGK are a little more like $2

 

Thanks for the responses guys, Its much appreciated.
I think I am going with these plugs next since I will need all the room I can get with the Grot Long tubes. Most plugs looks easy enough to get to but number 6 looks like a real S.O.B!

Claude