there's a lot of info on plugs here, but my question is...I'm using R45's in a 70 Chevelle that orginially had a 307. We have a '64 283 replacement in there, no more info on buildup. The guy sold me the R45's and said they burn a little hotter.
I'm having backfiring problems, with time set (i hope) correctly). Suggestions for a plug replacement?
thanks.
I'm having backfiring problems, with time set (i hope) correctly). Suggestions for a plug replacement?
thanks.