General Motors transmissions

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(Undo revision 3485168 by 140.248.77.40 (talk))
 
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|-
 
|-
 
!bgcolor="#CCCCFF"| 2  
 
!bgcolor="#CCCCFF"| 2  
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| TH200 (Metric), TH200C (Metric)
+
| T-200 (Metric), T-200C (Metric)
 
| align = "center" | 11
 
| align = "center" | 11
 
|-
 
|-
 
! bgcolor="#CCCCFF"|3  
 
! bgcolor="#CCCCFF"|3  
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| TH250, TH250C, TH350, TH350C, TH375B
+
| T-250, T-250C, T-350, T-350C, T-375B
 
| align = "center" | 13
 
| align = "center" | 13
 
|-
 
|-
 
!bgcolor="#CCCCFF"| 4  
 
!bgcolor="#CCCCFF"| 4  
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| TH375C, TH400, TH475, 3L80, 3L80HD
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| T-375C, T-400, T-475, 3L80, 3L80HD
 
| align = "center" | 13
 
| align = "center" | 13
 
|-
 
|-
 
! bgcolor="#CCCCFF"|5  
 
! bgcolor="#CCCCFF"|5  
−
| TH2004R
+
| 2004R
 
| align = "center" | 16
 
| align = "center" | 16
 
|-
 
|-
 
!bgcolor="#CCCCFF"| 6  
 
!bgcolor="#CCCCFF"| 6  
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| TH700R4, 4L60, 4L60E  
+
| 700R4, 4L60, 4L60E  
 
| align = "center" | 16
 
| align = "center" | 16
 
|-
 
|-
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| align = "center" | 17
 
| align = "center" | 17
 
|}
 
|}
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{{Note1}}Be careful not to mistake a TH250 for a TH350. The TH250 looks almost identical to the TH350 externally- same size, same oil pan. But unlike the TH350, it has a band adjuster stud and lock nut on the passenger side of the case near the cooler lines, similar in design to the Powerglide. The 1979-'84 TH250C used an oil pan with an X-shaped stamped rib (TH350 oil pan is smooth). Usually found in 1974-'75 Chevrolet Vega/Monza (including H-body clones), Nova, Camaro when coupled to the Vega 4 or 250 inline six. Reintroduced in 1979 as an option for GM A, B, F, and G-bodies in response to the failure rate of the THM200 when used behind anything other than a 4 cylinder (coupled to the Buick V6 3800 engine or Chevrolet 90 degree V6 exc. 4.3L) until 1984 (same as the 1974-'75 design but incorporating a lockup torque converter (same as THM350C), a lightened sunshell with 3 or 6 drilled holes (sometimes used in performance applications to decrease ET due to its lower rotating mass), low/reverse piston (with 8 cutouts), and auxillary valvebody (shared with the THM350C). TH250C mostly found in G-bodies (third generation F-bodies came with the TH200C or 700R4) and some B-bodies until the 1984 model year when it was last optioned.
+
{{Note1}}Be careful not to mistake a T-250 for a T-350. The T-250 looks almost identical to the T-350 externally- same size, same oil pan. But unlike the T-350, it has a band adjuster stud and lock nut on the passenger side of the case near the cooler lines, similar in design to the Powerglide. The 1979-'84 T-250C used an oil pan with an X-shaped stamped rib (T-350 oil pan is smooth). Usually found in 1974-'75 Chevrolet Vega/Monza (including H-body clones), Nova, Camaro when coupled to the Vega 4 or 250 inline six. Reintroduced in 1979 as an option for GM A, B, F, and G-bodies in response to the failure rate of the T-200 when used behind anything other than a 4 cylinder (coupled to the Buick V6 3800 engine or Chevrolet 90 degree V6 exc. 4.3L) until 1984 (same as the 1974-'75 design but incorporating a lockup torque converter (same as T-350C), a lightened sunshell with 3 or 6 drilled holes (sometimes used in performance applications to decrease ET due to its lower rotating mass), low/reverse piston (with 8 cutouts), and auxillary valvebody (shared with the T-350C). T-250C mostly found in G-bodies (third generation F-bodies came with the T-200C or 700R4) and some B-bodies until the 1984 model year when it was last optioned.
  
 
===Transmission dimensions===
 
===Transmission dimensions===
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*Dimension "D" is the distance between the center of the mounting bolts - this is the "width" of the mounting pad.
 
*Dimension "D" is the distance between the center of the mounting bolts - this is the "width" of the mounting pad.
 
*Dimension "E" is the width of the transmission at the bellhousing and combined with dimension "B", helps you roughly compare the size of the various transmissions.
 
*Dimension "E" is the width of the transmission at the bellhousing and combined with dimension "B", helps you roughly compare the size of the various transmissions.
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+
<BR><BR>
 
<table id="table2" border="1" cellpadding="2" cellspacing="0" width="91%">  
 
<table id="table2" border="1" cellpadding="2" cellspacing="0" width="91%">  
 
<tr bgcolor="#CCCCFF">   
 
<tr bgcolor="#CCCCFF">   
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</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td width="120">'''TH350'''</td>
+
<td width="120">'''T-350'''</td>
 
<td align="center" width="70">27-11/16"</td>
 
<td align="center" width="70">27-11/16"</td>
 
<td align="center" width="64">21-5/8"</td>
 
<td align="center" width="64">21-5/8"</td>
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</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td width="120">'''TH350'''</td>
+
<td width="120">'''T-350'''</td>
 
<td align="center" width="70">30-11/16"</td>
 
<td align="center" width="70">30-11/16"</td>
 
<td align="center" width="64">21-5/8"</td>
 
<td align="center" width="64">21-5/8"</td>
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</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td width="120">'''TH350'''</td>
+
<td width="120">'''T-350'''</td>
 
<td align="center" width="70">33-27/32"</td>
 
<td align="center" width="70">33-27/32"</td>
 
<td align="center" width="64">21-5/8"</td>
 
<td align="center" width="64">21-5/8"</td>
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</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td width="120">'''TH400/3L80'''</td>
+
<td width="120">'''T-400/3L80'''</td>
 
<td align="center" width="70">28-3/8"</td>
 
<td align="center" width="70">28-3/8"</td>
 
<td align="center" width="64">24-5/16"</td>
 
<td align="center" width="64">24-5/16"</td>
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</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td width="120">'''TH400/3L80'''</td>
+
<td width="120">'''T-400/3L80'''</td>
 
<td align="center" width="70">33-27/32"</td>
 
<td align="center" width="70">33-27/32"</td>
 
<td align="center" width="64">24-5/16"</td>
 
<td align="center" width="64">24-5/16"</td>
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</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td width="120">'''TH400/3L80'''</td>
+
<td width="120">'''T-400/3L80'''</td>
 
<td align="center" width="70">37-7/8"</td>
 
<td align="center" width="70">37-7/8"</td>
 
<td align="center" width="64">24-5/16"</td>
 
<td align="center" width="64">24-5/16"</td>
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</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td width="120">'''TH700R4/4L60'''</td>
+
<td width="120">'''700R4/4L60'''</td>
 
<td align="center" width="70">30-3/4"</td>
 
<td align="center" width="70">30-3/4"</td>
 
<td align="center" width="64">23-3/8"</td>
 
<td align="center" width="64">23-3/8"</td>
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</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td width="120">'''TH700R4/4L60'''</td>
+
<td width="120">'''700R4/4L60'''</td>
 
<td align="center" width="70">29-7/8"</td>
 
<td align="center" width="70">29-7/8"</td>
 
<td align="center" width="64">23-3/8"</td>
 
<td align="center" width="64">23-3/8"</td>
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</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td width="120">'''TH700R4/4L60'''</td>
+
<td width="120">''' 700R4/4L60'''</td>
 
<td align="center" width="70">29-1/2"</td>
 
<td align="center" width="70">29-1/2"</td>
 
<td align="center" width="64">23-3/8"</td>
 
<td align="center" width="64">23-3/8"</td>
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<td align="center" width="53">3-3/4"</td>
 
<td align="center" width="53">3-3/4"</td>
 
<td align="center" width="54">20"</td>
 
<td align="center" width="54">20"</td>
−
<td align="left" width="285">With TH350 6" extension housing</td>
+
<td align="left" width="285">With T-350 6" extension housing</td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td width="120">'''TH700R4/4L60'''</td>
+
<td width="120">''' 700R4/4L60'''</td>
 
<td align="center" width="70">30-1/2"</td>
 
<td align="center" width="70">30-1/2"</td>
 
<td align="center" width="64">23-3/8"</td>
 
<td align="center" width="64">23-3/8"</td>
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</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td width="120">'''TH2004R'''</td>
+
<td width="120">'''2004R'''</td>
 
<td align="center" width="70">27-11/16"</td>
 
<td align="center" width="70">27-11/16"</td>
 
<td align="center" width="64">n/a</td>
 
<td align="center" width="64">n/a</td>
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</table>
 
</table>
 
;Note
 
;Note
−
'''(1)''' An extension housing p/n 8673406 (old p/n 24214689) is available for the TH700R4/4L60 transmission that moves the rear transmission mount to the same position as a TH400 (short-style 4” tail) or TH2004R transmission. This 7-3/8” long extension housing can eliminate transmission crossmember modifications when replacing a TH400 or TH2004R transmission with a 4L60 assembly.<br>
+
'''(1)''' An extension housing p/n 8673406 (old p/n 24214689) is available for the 700R4/4L60 transmission that moves the rear transmission mount to the same position as a T-400 (short-style 4” tail) or 2004R transmission. This 7-3/8” long extension housing can eliminate transmission crossmember modifications when replacing a T-400 or 2004R transmission with a 4L60 assembly.<br>
  
 
===Typical application information===
 
===Typical application information===
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     <p align="center">
 
     <p align="center">
 
     <b>
 
     <b>
−
<font size=“2”>300 THM</font></b></p></td>
+
<font size=“2”>ST300 </font></b></p></td>
 
     <td bordercolorlight="#FFCCCC" bordercolordark="#800080" style="border-right-style: outset;  border-top-style: solid; border-top-width: 1; border-bottom-style: solid; border-bottom-width: 1" bgcolor="#FFF8DC" height="20" width="100%">
 
     <td bordercolorlight="#FFCCCC" bordercolordark="#800080" style="border-right-style: outset;  border-top-style: solid; border-top-width: 1; border-bottom-style: solid; border-bottom-width: 1" bgcolor="#FFF8DC" height="20" width="100%">
 
<font size=“2”>&nbsp;Super Turbine 300 (2-speed) used in 1964-'69 Buick, Olds, Pontiac</font></td>
 
<font size=“2”>&nbsp;Super Turbine 300 (2-speed) used in 1964-'69 Buick, Olds, Pontiac</font></td>
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==Cooler lines==
 
==Cooler lines==
−
{{Note1}}All except TH200C and TH2004R- which are opposite.
+
 
 +
 
 +
{{Note1}}All except T-200C and 2004R- which are opposite.
 
*Top line of the transmission = in '''''from''''' the cooler
 
*Top line of the transmission = in '''''from''''' the cooler
 
*Bottom line of the transmission = out '''''to''''' the cooler
 
*Bottom line of the transmission = out '''''to''''' the cooler
  
 
===T-350 adapters===
 
===T-350 adapters===
 +
 +
 
GM uses an adapter which threads into the case cooler ports and is sealed with a washer. The adapter converts the thread to inverted flare for hard line usage. The cooler ports on the T-350 are usually a female 1/4"-18 NPSM (National Pipe Straight Mechanical (NPSM)) and use a metal washer/seal. The NPSM threads will fit a NPT (tapered) fitting, but if a tapered fitting is to be used, be careful to not over tighten it.
 
GM uses an adapter which threads into the case cooler ports and is sealed with a washer. The adapter converts the thread to inverted flare for hard line usage. The cooler ports on the T-350 are usually a female 1/4"-18 NPSM (National Pipe Straight Mechanical (NPSM)) and use a metal washer/seal. The NPSM threads will fit a NPT (tapered) fitting, but if a tapered fitting is to be used, be careful to not over tighten it.
  
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==Speedometer==
 
==Speedometer==
−
===TH350, TH400, manual speedometer gear ===
+
 
 +
===T-350, T-400, manual speedometer gear ===
 +
 
 +
 
 
*[http://www.tciauto.com/tc/speedometer-gear-calculator/ Speedometer gear info and calculator]
 
*[http://www.tciauto.com/tc/speedometer-gear-calculator/ Speedometer gear info and calculator]
 
*[http://www.teufert.net/trans/speedo-gears.htm Speedometer gear usage chart]
 
*[http://www.teufert.net/trans/speedo-gears.htm Speedometer gear usage chart]

Latest revision as of 21:22, 22 March 2024

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