Quote:
Originally Posted by Stan Weiss
Gach,
Did you even read this post (I snipped it down)? You do know that Pontiac actually installed vacuum gauge in some of their cars.
Stan
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That wasn’t the answer to OP question, (plug heat range.) Is what he asked, I mean come on going from a 1050 to a 850 is definitely going to make less hp, the motor was dyno and dyno guys telling him he needs a colder plug.