Re: What sparkplus to run in AFR heads
 

I checked today and I have the -8 installed...sorry

Dave

Re: What sparkplus to run in AFR heads
 

Finally getting the engines back together. R5671A-9 is what I was running. I think I'll go to 8's to avoid fouling. Thanks for the answers.

Re: What sparkplus to run in AFR heads
 

I've got 10 hours on the -8's and they don't seem to be loading up at all. Gonna pull plugs this weekend and see how they are doing anyway.

Dave

Re: What sparkplus to run in AFR heads
 

I'm running the 8's on mine, the heat range seems to be pretty good, the strap is discolored halfway through it like it's supposed to be. Dart pro 1 heads.

http://www.maxracesoftware.com/spark_plugs.htm