General Motors transmissions
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==Three speed automatic== | ==Three speed automatic== | ||
| − | [[File:1972 th350 id.jpg|thumb|200px| | + | [[File:1972 th350 id.jpg|thumb|200px|T-350 accumulator with ID. "72" is year, "152" is a calibration code, "KE" is application code (link to application codes below)]] |
| − | === | + | ===T-350, T-350C, T-375B=== |
| − | the | + | the T-350 trans was built in 5 different lengths. Two were 4x4 applications. Tail housing lengths of the two wheel drive were 6 inch, 9 inch and 12 inches. The 12 inch length is not very common. It was used mostly in Buick AND Oldsmobile station wagons. |
| − | ==== | + | ====T-350 model ID codes==== |
{| | {| | ||
|[[File:1972 th350 id.jpg|thumb|200px|TH350 accumulator with ID. "72" is year, "152" is a calibration code, "KE" is application code (link to application codes below)]] | |[[File:1972 th350 id.jpg|thumb|200px|TH350 accumulator with ID. "72" is year, "152" is a calibration code, "KE" is application code (link to application codes below)]] | ||
|[[File:TH350 ID governor cover.jpg|frame|left|ID stamped into governor cover]] | |[[File:TH350 ID governor cover.jpg|frame|left|ID stamped into governor cover]] | ||
|} | |} | ||
| − | Codes for 1969-'72 | + | Codes for 1969-'72 T-350 transmissions are located on the accumulator; 1973-'81 T-350 codes are on the governor cover. Listings of the transmission application codes can be seen '''[http://www.teufert.net/trans/trans.htm HERE]'''. |
<br style="clear:both"/> | <br style="clear:both"/> | ||
| − | ====ID | + | ====ID T-350C==== |
| − | The | + | The T-350C input looks different than the T-350 non lockup type tranny. Below is the T-350C input: |
[[File:350lockupinput1.jpg|220px]] | [[File:350lockupinput1.jpg|220px]] | ||
<br><br> | <br><br> | ||
| − | A non lockup | + | A non lockup T-350 input shaft looks like the one shown below: |
[[file:350NONLOCK INPUT.jpg]] | [[file:350NONLOCK INPUT.jpg]] | ||
| − | ==== | + | ====T-350 ratios==== |
*First: 2.52:1 | *First: 2.52:1 | ||
*Second: 1.52:1 | *Second: 1.52:1 | ||
*High: 1:1 | *High: 1:1 | ||
| − | === | + | ===T-400 (3L80), T-375C, T-475 (3L80HD)=== |
| − | 1987-up 3L80HD is the heavy duty version of the | + | 1987-up 3L80HD is the heavy duty version of the T-400 found in light trucks. It has a 27 spline output shaft and is 34.5" long overall in the 2WD version. 'HD' is cast into the bellhousing in medium size letters. The TH400 transmission was used between 1964-1990. 1987 was the year GM transmissions began using the alphanumeric designations. |
| − | ==== | + | ====T-400 ratios==== |
*First: 2.48:1 | *First: 2.48:1 | ||
*Second: 1.48:1 | *Second: 1.48:1 | ||
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