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Old 12-28-2011, 03:03 PM
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T-350 trans wont shift out of 1st

My son has a 76 chevy p/u with a 350 engine/350 turbo trans. Trans probably has 150,000 miles on it,but has always worked fine. Last week he drove it and it would not shift out of first gear. Checked vac lines ,kickdown linkage, and shift linkage. All seem ok. Trying to shift manually thru the gears made no difference, and accelerating to a very hi rpm did not initiate a shift. Oil smells ok and trans has never been abused or overheated. We have owned the truck since new ,so all history is known.

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Old 12-28-2011, 03:10 PM
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Have you re-placed the modulator valve yet ?



Cole
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Old 12-29-2011, 05:56 AM
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governor gear is applecored or broke. a th350 will still shift with a bad or disconnected modulator
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Old 12-29-2011, 02:45 PM
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Quote:
Originally Posted by tnsmith10
governor gear is applecored or broke. a th350 will still shift with a bad or disconnected modulator
True.



Cole
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Old 12-31-2011, 10:39 AM
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photo of the T-350 governor and cover. Plastic gear breaks , wears out.

If the plastic gear is apple cored worn... there usually is a cause like worn bushings on the output shaft.

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