I have an LT1 with 11:1 compression, I am running longtubes etc.

What do you all the best plugs are and I may spary (colder plug maybe).

 

Most who spray use autolite 103's I believe. What ever you do don't use platinum.

 

thanks anyone else?

 

Rule of thumb is to go one step colder on the plugs for every 75HP you add. The NGK TR6 and the AutoLite 104 are one step colder and worked well for me. Currently running the AutoLite 103's at the 500flywheelHP level, and they work well, while not fouling excessively in heavy traffic.

When you spray, depending on how much, you might want to go another step colder.

 

good advice man. What do you all think about the NGK Tr6 or tr6 ix

 

As I said, I used the NGK TR6 when my engine was basically stock/botl-on with a 125HP nitrous kit. Excellent plug. I would assume the "ix" is the Iridium electrode, and I have never used those.

 

i used the TR6's when i was spraying 100 shot. work well even in heavy traffic i put these in my daily driven Firehawk