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If you haven't tuned your car on a Dyno, I must say it is an interesting experience. Takes the guesswork out of setting up the tri power. This engine was just recently rebuilt. Had about an hour run time on an engine stand and about 25 driving miles in the car before the Dyno. It is the car's original 389. I had the engine rebuilt to run on 91 octane pump gas.
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[SIGPIC]1966 GTO, Tri-Power, 4 Spd, #'s matching. PHS documented.