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Pontiac Firebird Forum : “Can you modify gear sizes/acceleration ratios in a Turbo 400 automatic Transmiss...”

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Tim598
09/30/2009, 6:15PM
About: Pontiac Firebird
Can you modify gear sizes/acceleration ratios in a Turbo 400 automatic Transmission?

Turbo 400 only has three gears and the first gear gets skipped during a 5000 RPM flooring with a 455 engine.

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