turbo 400 shifting problems

Old 03-29-2010, 01:43 PM
  #1  
bambam598
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Default turbo 400 shifting problems

i am having trouble with a trans that i rebuilt shifting at higher rpms (between 4 and 5 thousand) at normal driving throttle pressure. this trans was rebuilt with new plates composites bushings and seals. new shift modulator too. i also installed a b&m shift kit,(stage two). i have tried adjusting the modulator, and checking vacuum. but before i dig in to it again, i would like some ideas to look for. this is not the first trans i have done but i don't do them enough to be an expert at them. any suggestion would be greatly apprieciated. thanks ops:
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Old 03-29-2010, 06:40 PM
  #2  
kwkracing
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Have you got it in 3rd gear at all? Does it not shift at all? Need some more detail on the problems
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Old 03-29-2010, 10:34 PM
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zipper06
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I don't know for sure but it sounds like you may have a problem with the govner hanging up. About a 100 yrs. ago we used to drill holes in the govner weights to carry the shift point higher.

Again i don't know if this is the problem, just guessing.

Zip.
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Old 03-30-2010, 03:09 AM
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bambam598
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ya the trans shifts into all gears. last night i looked again at the shift points and it shifted from 1 to2 at 4100 and 2 to3 at 4700. with just enough throttle to get to the rpm. with the car on jack stands it shifted at 3000.
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Old 03-30-2010, 12:38 PM
  #5  
kwkracing
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What stall is the convertor? How much hp and torque are you making?
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Old 03-30-2010, 04:48 PM
  #6  
bambam598
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2500 stall b&m . the motor never dynoed but i think 500 hp. 454 with ported ls6 heads and cam rpm range 1800 to 5500. winters stock rectangle intake 9.5 compression. 3:42 gears
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