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I need as many tips, pointers, whatever you got about a56 Pontiac chieftain hydropic transmittion rebuild!!😒 Any help will be appreciated thanks!! Have a blessed day! Earl Betz Sr. and Jr
 

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That version of Hydramatic, had a modulated pitch stator in the convertor. Could vary torque multiplication under load.
Wasn't quite as bad as the Buick Dynaflow but still a slush box.
 

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That version of Hydramatic, had a modulated pitch stator in the convertor. Could vary torque multiplication under load.
Wasn't quite as bad as the Buick Dynaflow but still a slush box.
Nope. Wrong transmission. ST 300 & ST 400 had variable pitch stators. This transmission has twin couplings or basically 2 convertors. First convertor has a planetary gear set and the other is a fluid coupling. Special tools are needed for the second coupling. As I said, they are not real user friendly.
 
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