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Discussion Starter · #1 ·
Rebuilt turbo400 shifts through all 3 gears by the time I get to 20 mph. The vacuum modulator on the tranny is connected to manifold vacuum since the carb does not have an extra port for it. Is this the problem or maybe the modulator. Not sure where to start.
 

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Alan

Are you talking about turning the screw inside the metal tube? I've heard that doing this only makes the shift firmer not really solving the problem. Have you ever done this and what was your results.
 
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