What are the best performance plugs and heat range for the 350. I have run ac 44s and i have rapid fire #2s in right now.
Personally, I like the design of the Rapid Fire plugs.:TU: After talking to some of the techs at Jacobs Electronics back when the R.F.'s came out, they seemed to think they were a good plug. They didn't have as nice things to say about the Split Fire stuff though!:Brow: Having a 'bullet proof' ignition (better coil, module, etc.) is probably more important than which brand of plug you use.
plugs I've been running AC R42LTS in my 350 for awhile and it seems to like them. The "L" stands for long and they do stick down into the cylinder, but I was told that just bumps the compression up a little. Ken
