Anyone tried 1 heat range colder plugs on their R/T?
I've had some detonation problems at WOT (upper rpm) with 87 octane.
This happens even before installation of JBA headers (hot weather) and
again a few nights ago with temps in the low 70s. I really don't want to
put in more expensive gas since I drive a lot of miles and get 12 mpg.
This was the trick on another brand of small block V-8 with iron heads.
Alan
'98 Dakota R/T (Headers, FABM & waiting for Shift kit)
'89 Mustang GT (347, Griggs, S-trim...)
Ducati 916 (someday)
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