If I remember correctly, Holley claims that the systemax2 kit will take a full weight GT into the 12's. If the altitude makes that much of a difference that sucks. I'm glad I live at sea level.
Have you tried playing with your shift points? (not sure on the power band of that cam) Don't know much about your situation, but it's just a thought.
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90LX Ragtop.
15.5@91 w/Aod
Strut tower brace, K&N, 2.25'' Flowmasters, Hollow cats, Crank pulley, Crane 2031, Crane rockers, Holley FPR, Heavy duty clutch, and alum quadrant.
Need Gears Bad!!!
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