@@ Line 814: / Line 814: @@
       <tr><td bordercolorlight="#FFCCCC" bordercolordark="#800080" style="border-style: outset; " bgcolor="#FFF8DC" height="15" width="15%">
      <p align="center">
-       <b><font size=“2”>TH180</font></b></p></td>
+       <b><font size=“2”>T-180</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%">
      <font size=“2”>&nbsp;3-speed 1969-'79</font></td>
@@ Line 821: / Line 821: @@
       <tr><td bordercolorlight="#FFCCCC" bordercolordark="#800080" style="border-style: outset; " bgcolor="#FFF8DC" height="15" width="15%">
      <p align="center">
-       <b><font size=“2”>TH180C</font></b></p></td>
+       <b><font size=“2”>T-180C</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%">
      <font size=“2”>&nbsp;3-speed 1980-up electronic torque converter lock-up (TCC)</font></td>
@@ Line 827: / Line 827: @@
   <tr><td bordercolorlight="#FFCCCC" bordercolordark="#800080" style="border-style: outset; " bgcolor="#FFF8DC" height="15" width="15%">
      <p align="center">
-       <font size=“2”><b>TH200</b></font></p></td>
+       <font size=“2”><b>T-200</b></font></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%">
      <font size=“2”>&nbsp;3-speed 1976-'80</font></td>
@@ Line 833: / Line 833: @@
   <tr><td bordercolorlight="#FFCCCC" bordercolordark="#800080" style="border-style: outset; " bgcolor="#FFF8DC" height="15" width="15%">
      <p align="center">
-       <font size=“2”><b>TH200C</b></font></p></td>
+       <font size=“2”><b>T-200C</b></font></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%">
      <font size=“2”>&nbsp;3-speed 1981-'87 electronic torque converter lock-up (TCC)</font></td>
@@ Line 859: / Line 859: @@
   <tr><td bordercolorlight="#FFCCCC" bordercolordark="#800080" style="border-style: outset; " bgcolor="#FFF8DC" height="15" width="15%">
      <p align="center">
-       <font size=“2”><b>TH2004R</b></font><b></b></p></td>
+       <font size=“2”><b>2004R</b></font><b></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%">
      <font size=“2”>&nbsp;Overdrive 1981-'90</font></td>
@@ Line 865: / Line 865: @@
   <tr><td bordercolorlight="#FFCCCC" bordercolordark="#800080" style="border-style: outset; " bgcolor="#FFF8DC" height="15" width="15%">
      <p align="center">
-       <font size=“2”><b>TH700R4</b></font></p></td>
+       <font size=“2”><b>700R4</b></font></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%">
      <font size=“2”>&nbsp;Overdrive 1981-'92 electronic torque converter lock-up (TCC); renamed 4L60 during the 1990 model year</font></td>
@@ Line 947: / Line 947: @@
      <p align="center">
-     <font size=“2”><b>TH125</b></font></p></td>
+     <font size=“2”><b>T-125</b></font></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%">
      <font size=“2”>&nbsp;3-speed 1980-'81</font></td>
@@ Line 954: / Line 954: @@
      <p align="center">
        <b>
-       <font size=“2”>TH125C</font></b></p></td>
+       <font size=“2”>T-125C</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%">
 <font size=“2”>&nbsp;3-speed 1982-up electronic controlled lock-up torque converter (TCC)</font></td>
@@ Line 960: / Line 960: @@
   <tr><td bordercolorlight="#FFCCCC" bordercolordark="#800080" style="border-style: outset; " bgcolor="#FFF8DC" height="15" width="15%">
      <p align="center">
-       <b><font size=“2”>TH325</font></b></p></td>
+       <b><font size=“2”>T-325</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%">
      <font size=“2”>&nbsp;3-speed 1979-'81 (GM E platform (Eldorado, Toronado, Riviera) and K platform 1980-'85 (Seville)</font></td>
@@ Line 966: / Line 966: @@
   <tr><td bordercolorlight="#FFCCCC" bordercolordark="#800080" style="border-style: outset; " bgcolor="#FFF8DC" height="15" width="15%">
      <p align="center">
-       <font size=“2”><b>TH3254L</b></font></p></td>
+       <font size=“2”><b>T-3254L</b></font></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%">
 <font size=“2”>&nbsp;Overdrive 1982-'85 electronic controlled lock-up torque converter (TCC); GM E and K platform</font></td>
@@ Line 972: / Line 972: @@
   <tr><td bordercolorlight="#FFCCCC" bordercolordark="#800080" style="border-style: outset; " bgcolor="#FFF8DC" height="15" width="15%">
      <p align="center">
-       <font size=“2”><b>TH425</b></font></p></td>
+       <font size=“2”><b>T-425</b></font></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%">
      <font size=“2”>&nbsp;3-speed 1966-'78 (electric passing gear - THM400 derivative) - GM E platform automobiles (Oldsmobile Toronado, Cadillac Eldorado 1967-'78) incl. GMC motorhome</font></td>
@@ Line 1,097: / Line 1,097: @@
 |-
 !bgcolor="#CCCCFF"| 2
-| TH200 (Metric), TH200C (Metric)
+| T-200 (Metric), T-200C (Metric)
 | align = "center" | 11
 |-
 ! bgcolor="#CCCCFF"|3
-| TH250, TH250C, TH350, TH350C, TH375B
+| T-250, T-250C, T-350, T-350C, T-375B
 | align = "center" | 13
 |-
 !bgcolor="#CCCCFF"| 4
-| TH375C, TH400, TH475, 3L80, 3L80HD
+| T-375C, T-400, T-475, 3L80, 3L80HD
 | align = "center" | 13
 |-
 ! bgcolor="#CCCCFF"|5
-| TH2004R
+| 2004R
 | align = "center" | 16
 |-
 !bgcolor="#CCCCFF"| 6
-| TH700R4, 4L60, 4L60E
+| 700R4, 4L60, 4L60E
 | align = "center" | 16
 |-
@@ Line 1,120: / Line 1,120: @@
 | align = "center" | 17
 |}
-{{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===
@@ Line 1,131: / Line 1,131: @@
 *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.
+<BR><BR>
 <table id="table2" border="1" cellpadding="2" cellspacing="0" width="91%">
 	<tr bgcolor="#CCCCFF">
@@ Line 1,161: / Line 1,161: @@
 	</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="64">21-5/8"</td>
@@ Line 1,170: / Line 1,170: @@
 	</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="64">21-5/8"</td>
@@ Line 1,179: / Line 1,179: @@
 	</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="64">21-5/8"</td>
@@ Line 1,188: / Line 1,188: @@
 	</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="64">24-5/16"</td>
@@ Line 1,197: / Line 1,197: @@
 	</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="64">24-5/16"</td>
@@ Line 1,206: / Line 1,206: @@
 	</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="64">24-5/16"</td>
@@ Line 1,215: / Line 1,215: @@
 	</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="64">23-3/8"</td>
@@ Line 1,224: / Line 1,224: @@
 	</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="64">23-3/8"</td>
@@ Line 1,233: / Line 1,233: @@
 	</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="64">23-3/8"</td>
@@ Line 1,239: / Line 1,239: @@
 		<td align="center" width="53">3-3/4"</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>
-		<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="64">23-3/8"</td>
@@ Line 1,251: / Line 1,251: @@
 	</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="64">n/a</td>
@@ Line 1,342: / Line 1,342: @@
 </table>
 ;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===
@@ Line 1,428: / Line 1,428: @@
      <p align="center">
      <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%">
 <font size=“2”>&nbsp;Super Turbine 300 (2-speed) used in 1964-'69 Buick, Olds, Pontiac</font></td>
@@ Line 1,581: / Line 1,581: @@
 ==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
 *Bottom line of the transmission = out '''''to''''' the cooler
 ===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.
@@ Line 1,679: / Line 1,683: @@
 ==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.teufert.net/trans/speedo-gears.htm Speedometer gear usage chart]
 ==Fastener threads==
-Using SAE bolts on a GM transmission mount after about 1978 will strip the mount threads. GM converted to metric mount bolts about 1978 even though most of the rest of the transmission bolts did not change until the TH700R4 and TH4L80/E came out.
+Using SAE bolts on a GM transmission mount after about 1978 will strip the mount threads. GM converted to metric mount bolts about 1978 even though most of the rest of the transmission bolts did not change until the 700R4 and 4L80E came out.
-TH350 and TH400 transmission mount, speedometer, and solenoid bolts went metric about 1978. All other bolts were SAE to the end of production.
+T-350 and T-400 transmission mount, speedometer, and solenoid bolts went metric about 1978. All other bolts were SAE to the end of production.
-TH200C, TH2004R, TH700R4, and later transmissions used metric fasteners.
+T-200C, 2004R, 700R4, and later transmissions used metric fasteners.
 LX engine transmission to block bolts are metric: M10 x 1.5. Also includes 2001-'02 SBC used in the Chevrolet Express/GMC Savana (crate motors including those for marine/industrial retain the use of SAE bolts).

General Motors transmissions

Latest revision as of 20:22, 22 March 2024

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