I've searched previous posts and believe that an R45XLS is the optimal plug for my stock 67 427-290. I am however running R42XLS at present.
I understand that the 45 is a hotter plug that resists fouling better. I am not seeing any fouling issues at this point.
Would my engine be expected to behave/run any differently with a 45 plug Vs the current 42 plug?
Thanks
I understand that the 45 is a hotter plug that resists fouling better. I am not seeing any fouling issues at this point.
Would my engine be expected to behave/run any differently with a 45 plug Vs the current 42 plug?
Thanks
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