General Motors transmissions

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(Three speed automatic)
(Converting TH400 to SP)
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*[http://www.buickperformanceclub.com/switchpitch.htm Itching for a Switch Pitch Transmission]
 
*[http://www.buickperformanceclub.com/switchpitch.htm Itching for a Switch Pitch Transmission]
  
====Converting TH400 to SP====
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====Converting T-400 to SP====
The SP pump, solenoid and converter can be retrofitted into the early TH400 case. The correct case for this will have a slightly different casting w/a drilled hole present. Later TH400 cases lack this, so the swap isn't possible.
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The SP pump, solenoid and converter can be retrofitted into the early T-400 case. The correct case for this will have a slightly different casting w/a drilled hole present. Later T-400 cases lack this, so the swap isn't possible.
  
 
===TH400 model ID codes===
 
===TH400 model ID codes===

Revision as of 16:28, 25 August 2023

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