Reply To: V6 lower two cylinders, lower compression?

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January 18, 2019 at 8:19 am #163929
Don
Participant

    US Member

    Like Dan says…..I think this concept carried over to other V6 models also. Your 1987 loop V6 might have one of these powerheads if the powerhead has been replaced….Have a look at the ID plug on the powerhead. This idea was supposed to help protect the lower cylinders from detonation/preignition damage because they got hotter….