Still doesn't sound like a transmission problem. If you've got all the gears, and they're all shifting without much slip then it's probably not the trans. Heck, it's downshifting like it should at 1/2 throttle! Sounds like it's an engine tune problem. Got any codes? SES light not working? Can you get a datalog from something like winaldl?
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, Jon
Owner of a Red Sled.
If it\'s EFI I can tune it. Specialize in 82-95 GM (yes Lt1\'s)
\"If you can leave black marks on a straight from the time you exit a corner till the time you brake for the next turn.......Then, you have enough horsepower\" - Mark Donohue
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