[1FastZ28]

I have a BBC 635 inch on Q16 Gas 3200lb NA car. Motor make over 11000hp I currently run Autolight AR3933 is this a good plug to run or can I go faster with another, Thanks

 

[us7race]

Man that is alot of HP.. 11,000 Plugs will not make you run faster. They will only last longer if they are the proper ones. I have ran the same set for a whole season in my N/A setup.

 

[Quik598]

I would have to disagree- if you are way off on your plug it will kill power, I changed from ngk-9 plug to a autolite 3910 in my bbc and the motor pulled alot better in high gear and e.t. went from 5.69 to 5.65 just with a plug change!

 

[jmarkaudio]

The 3933 is a cold plug, colder than what is normal for a NA engine. Can you post a good close up picture of the plugs you have?

 

[JeffMcKC]

You should give up a little more if its that cold you may have a bit more timing than you need in it. But a plug recomndation from what you have given is throwing a dart

 

[1FastZ28]

You should give up a little more if its that cold you may have a bit more timing than you need in it. But a plug recomndation from what you have given is throwing a dart

What more do you need?

 

[jmarkaudio]

Pictures tell the story.