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I own a 1986 Trans Am LG4 305 Auto car that has the WS6 performance package. My car came with the 140km speedo and not the 220km speedo. What option triggered the higher speedometer? 140km speedometer
I have determined you must have a fuel injected 5.0 or 5.7 to trigger the higher speedo. Carburetor cars only received the lessor speedo. I found this in the Dealer ordering guide.
