I am getting ready to run the NOS for the first time this weekend. I have a question.
I plan to run Autolite AR94 which should be 2 steps colder. I am running a 240 shot. Will these be good and also will they still be OK to run daily. It is driven daily and I have heard that some plugs do not work well on the street.

 

I would reccomend running TR6's for your daily drive, when going to the track swap in the AR94's as they will not last very long with daily use.

 

LOL I didn't say I was going to test it at the track. Is there a Autolight heat range that I could use for both?

 

It looks like the AR94's are the only listing for 2 steps colder in Autolite. I'm gettin ready to ditch my TR6's & switch to Autolite 103's after talkin with Ed Wright. Also I have seen less Autolite plugs have failure than NGK.

 

TR7's might work for ya. I am not too sure how well they hold up for normal driving