TH350 rebuild tech

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|[[File:TH 350 backXL diagram.jpg|thumb|300px|center|Exploded view, "back" of the TH350 transmission.]]
 
|[[File:TH 350 backXL diagram.jpg|thumb|300px|center|Exploded view, "back" of the TH350 transmission.]]
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|[[File:TH 350 front diagram.jpg|thumb|300px|center|Exploded view, "front" of transmission.]]  
 
|[[File:TH 350 front diagram.jpg|thumb|300px|center|Exploded view, "front" of transmission.]]  
 
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There was also a T-350'''C''' version that has a lockup torque converter (TCC). The case has a "C" cast into it, and there will be an electrical plug adjacent to the shifter shaft on the driver side of the tranny. Not to be confused with a TH350 non-lockup tranny with a screwed-in electrical connector on the ''passenger'' side of the case. This is a pressure switch that was used ~1972-'73 for the Transmission Controlled Spark (TCS) system. This disabled the distributor vacuum advance in all gears except high gear, and is a single wire switch threaded into a pressure port near where the cooler lines are located. In the case of this switch, you can either leave it in place, unused- or remove it and plug the port. There have been reports of some T-350 trannys having a temp sender in this area as well.
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There was also a T-350'''C''' version that has a lockup torque converter (TCC). Look for the end of the input shaft to have a smooth polished end with O-ring on it. The case has a "C" cast into it, and there will be an electrical plug adjacent to the shifter shaft on the driver side of the tranny. Not to be confused with a TH350 non-lockup tranny with a screwed-in electrical connector on the ''passenger'' side of the case. This is a pressure switch that was used ~1972-'73 for the Transmission Controlled Spark (TCS) system. This disabled the distributor vacuum advance in all gears except high gear, and is a single wire switch threaded into a pressure port near where the cooler lines are located. In the case of this switch, you can either leave it in place, unused- or remove it and plug the port.  
  
There aren't a lot of places making high stall torque converters for the T-350C.
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Only the larger Transmission / Converter companies build  high stall torque converters for the T-350C because of the low demand for them.
  
The T-250 has a band adjuster stud and locknut on the passenger side of the case near the cooler lines.
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The T-250C has a band adjuster stud and locknut on the passenger side of the case near the cooler lines.
  
 
==Rebuilding the T-350==
 
==Rebuilding the T-350==

Revision as of 12:24, 25 March 2012

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