Spark plug heat range

Car2n

Registered User
I'm wondering what heat range plug would be best for my engine. 1 range colder or 2 ranges colder.
Rather than list my engine mods, please click on my sig picture for the info.
I did a search for recommendations but find that opinions vary,,,

I'm thinking Autlolite double Platinums???

Thanks
 
What are your current boost levels? I run standard copper Autolite 103 (2 heat ranges colder), 764's are 1 heat range colder. There is a write on this in the members FAQ
 
Any fuel mileage advantages to running colder plugs? I run 103's for nitrous, but I don't know if it would be beneficial on a stock engine.
 
Back
Top