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Old 04-12-2010, 08:35 PM   #1 (permalink)
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Help with Turbo-Hydra-matic Transmissions

Hi guys. I have 3 transmissions that I'm trying to determine exactly what they are so I can accurately describe them to sell. One is on a '78 Suburban so after getting some previous help from some Mud members I assume it's a TH 400. The tag says Either "G" or "C" on the left and "H" on the right. In the middle it has a "78" and then on the same line it's stamped "369". On the bottom of the tag it is stamped "79-CH 18986" It is stamped "Hydra-matic Div. of GMC" on the bottom of the pan.

Transmission #2 has a tag that also says Hydra-Matic on the top and then a "C" on the left of the tag, a "P" on the right of the tag and in-between it has "78" and then it's stamped "374". The bottom of the tag says "78 -CP- 18555.

Transmission #3 has a square pan. I couldn't find any tags but there are large "K"'s stamped into the housing and "MD 8" and I also found a "1" stamped into the housing.

Thanks, appreciate your help!
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Old 04-12-2010, 09:09 PM   #2 (permalink)
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th400 pan looks like texas
th350 pan is square with one corner knocked off
700r4 pan is square.

k is the "stronger" castings usualy found in 4wd stuff.
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