Transmission identification

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==Clearing up the confusion==
 
Identifying your transmission can be confusing. The purpose of this page is to help clear up some of the confusion.
 
  
==GM transmissions==
 
===Automatic===
 
====General information====
 
[[Image:Pan_id.jpg‎|frame|center|Transmission identification by pan shape with gear ratios.]]
 
<br style="clear:both">
 
{| style="background:yellow"
 
! Image Number !! !! Transmission(s) !! !! Pan Bolts !! !! 1st Gear !! !! 2nd Gear !! !! 3rd Gear !! !! 4th Gear !! !! Reverse
 
|-
 
! 1
 
|
 
| Aluminum Powerglide
 
|
 
| align = "center" | 14
 
|
 
| align = "center" | 1.76/1.82
 
|
 
| align = "center" | 1.00
 
|
 
| align = "center" | -
 
|
 
| align = "center" | -
 
|
 
| align = "center" | 1.76/1.82
 
|-
 
! 2
 
|
 
| TH200 (Metric), TH200C (Metric)
 
|
 
| align = "center" | 11
 
|
 
| align = "center" | 2.54
 
|
 
| align = "center" | 1.57
 
|
 
| align = "center" | 1.00
 
|
 
| align = "center" | -
 
|
 
| align = "center" | 2.06
 
|-
 
! 3
 
|
 
| TH250, TH250C, TH350, TH350C, TH375B
 
|
 
| align = "center" | 13
 
|
 
| align = "center" | 2.52
 
|
 
| align = "center" | 1.52
 
|
 
| align = "center" | 1.00
 
|
 
| align = "center" | -
 
|
 
| align = "center" | 1.94
 
|-
 
! 4
 
|
 
| TH375C, TH400, TH475, 3L80, 3L80HD
 
|
 
| align = "center" | 13
 
|
 
| align = "center" | 2.48
 
|
 
| align = "center" | 1.48
 
|
 
| align = "center" | 1.00
 
|
 
| align = "center" | -
 
|
 
| align = "center" | 2.07
 
|-
 
! 5
 
|
 
| TH200-4R
 
|
 
| align = "center" | 16
 
|
 
| align = "center" | 2.54
 
|
 
| align = "center" | 1.57
 
|
 
| align = "center" | 1.00
 
|
 
| align = "center" | 0.67
 
|
 
| align = "center" | 2.06
 
|-
 
! 6
 
|
 
| TH700-R4, 4L60, 4L60E
 
|
 
| align = "center" | 16
 
|
 
| align = "center" | 3.06
 
|
 
| align = "center" | 1.62
 
|
 
| align = "center" | 1.00
 
|
 
| align = "center" | 0.70
 
|
 
| align = "center" | 2.29
 
|-
 
! 7
 
|
 
| 4L80E
 
|
 
| align = "center" | 17
 
|
 
| align = "center" | 2.48
 
|
 
| align = "center" | 1.48
 
|
 
| align = "center" | 1.00
 
|
 
| align = "center" | 0.75
 
|
 
| align = "center" | 2.07
 
|}
 
 
 
[[Image:Transmission_dimensions.jpg‎|Transmission dimensions.]]
 
 
NOTE: An aluminum powerglide also exists with an 18" extension housing.
 
 
 
[[Image:Transmission_guidelines.jpg‎|Typical application information.]]
 
 
 
====TH250, TH250C, TH350, TH350C, TH375B transmissions====
 
 
Identifying transmissions in the TH350 family.
 
 
{| style="background:yellow"
 
! Transmission !! !! Type !! !! Wire Plug !! !! Band Adjusting Screw !! !! Tail Housing
 
|-
 
! TH250
 
|
 
| align = "center" | Non-lockup
 
|
 
| align = "center" | None
 
|
 
| align = "center" | Yes
 
|
 
| align = "center" | 6"
 
|-
 
! TH250C
 
|
 
| align = "center" | Lockup
 
|
 
| align = "center" | Driver Side
 
|
 
| align = "center" | Yes
 
|
 
| align = "center" | 6" or 9"
 
|-
 
! TH350
 
|
 
| align = "center" | Non-lockup
 
|
 
| align = "center" | None
 
|
 
| align = "center" | None
 
|
 
| align = "center" | None, 6", 9" or 12"
 
|-
 
! TH350C
 
|
 
| align = "center" | Lockup
 
|
 
| align = "center" | Driver side
 
|
 
| align = "center" | None
 
|
 
| align = "center" | None, 6", or 9"
 
|-
 
! TH375B
 
|
 
| align = "center" | Non-lockup
 
|
 
| align = "center" | None
 
|
 
| align = "center" | None
 
|
 
| align = "center" | 12"
 
|}
 
 
NOTE 1: Any of these may also have a switch on the passenger side near the TV cable.
 
 
NOTE 2: ALL V8 style  Lockup transmissions have an input shaft with a polished tip and rubber O ring at the front end of this shaft.
 
 
 
 
===List of vehicles that used the TH350 as original equipment:===
 
 
 
1969-'84 Buick, Chevrolet, Olds and Pontiac full-size cars
 
 
1969-'81 Buick, Chevrolet, Olds and Pontiac A-body, G-body and F-body cars
 
 
1973-'79 Buick, Chevrolet Olds and Pontiac X-body cars
 
 
1969-'78 Riviera
 
 
1975-'82 Corvette
 
 
1975-'80 Buick, Chevrolet, Olds and Pontiac H-body cars (Vega, Monza, Skyhawk, etc.)
 
 
1981-'82 Cadillac Fleetwood and Deville (CBC-350 and TH350C versions)
 
 
1973-'85 Chevy and GMC 2- and 4WD pickups, Blazers, G-10, G-20 Vans and Suburbans
 
 
===Manual===
 
 
==Ford Transmissions==
 
===Automatic===
 
====General information====
 
 
{| style="background:yellow"
 
|+ '''Gear Ratios of Popular Ford Automatic Transmissions'''
 
! Transmission !! !! 1st Gear !! !! 2nd Gear !! !! 3rd Gear !! !! 4th Gear
 
|-
 
! C4/C5/C6
 
|
 
| align = "center" | 2.46
 
|
 
| align = "center" | 1.46
 
|
 
| align = "center" | 1.00
 
|
 
| align = "center" | -
 
|-
 
! AOD/AODE
 
|
 
| align = "center" | 2.40
 
|
 
| align = "center" | 1.47
 
|
 
| align = "center" | 1.00
 
|
 
| align = "center" | 0.67
 
|-
 
! 4R70W
 
|
 
| align = "center" | 2.84
 
|
 
| align = "center" | 1.55
 
|
 
| align = "center" | 1.00
 
|
 
| align = "center" | 0.70
 
|-
 
! E4OD/4R100
 
|
 
| align = "center" | 2.71
 
|
 
| align = "center" | 1.54
 
|
 
| align = "center" | 1.00
 
|
 
| align = "center" | 0.71
 
|}
 
 
 
'''C3/C4/C5/C6/AOD Series Comparison'''
 
 
[[Image:Ford-transID01.jpg‎ ]]
 
 
 
'''3-Speed Identification'''
 
 
[[Image:Trans_gaskets.gif‎]]
 
 
 
{| style="background:yellow"
 
! Transmission(s) !! !! Pan Bolts
 
|-
 
! C3
 
|
 
| align = "center" | 13
 
|-
 
! C4, C5
 
|
 
| align = "center" | 11
 
|-
 
! C6
 
|     
 
| align = "center" | 17
 
|-
 
! FX Cruiso, MX Cruiso, FMX, CW
 
|     
 
| align = "center" | 14
 
|}
 
 
 
'''4-Speed Identification'''
 
 
[[Image:Ford_AOD_gaskets.gif‎]]
 
 
 
{| style="background:yellow"
 
! Transmission(s) !! !! Pan Bolts
 
|-
 
! A4LD, 4R44E, 4R55E
 
|
 
| align = "center" | 18
 
|-
 
! AOD, AODE, 4R70W
 
|
 
| align = "center" | 14
 
|-
 
! E4OD, 4R100
 
|     
 
| align = "center" | 20
 
|}
 
 
====Ford-o-matic S3====
 
 
[[Image:FORD-O-MATIC_3S_2.jpg‎]]
 
 
 
 
[[Image:Cruise-O-Matic_I_D_7.jpg‎]]
 
 
The Cruise-O-Matic
 
 
Introduced in 1951, the Cruise-O-Matic series of three-speed automatics (which includes the FMX) was used in Ford, Lincoln and Mercury passenger cars until 1979, and in light trucks from 1968 through 1979.
 
 
They came in three configurations:
 
 
#The small case (from 1951 to 1966).
 
#The medium case (from 1955 to 1968).
 
#The FMX (from 1967 to 1979) .
 
 
*Early Cruise-O-matics had a filler tube that attached to the transmission pan.
 
*FMX transmissions filler tube slid into the main case.
 
 
The Cruise-O-Matic transmissions are easily identified by their design, which incorporates a cast-iron main case (unlike all other Ford three-speed automatic offerings) with separate aluminum bellhousings and extension housings bolted to it. The Cruise-O-Matics should be avoided in performance applications as very little is available in the way of aftermarket performance parts other than shift kits. The Cruise-O-Matics were also offered with all three bolt-common V8-pattern bellhousings.
 
 
 
====C4/C5====
 
*'''General Information'''
 
**Years
 
***C4: 1964-1982
 
***C5: 1982-1986
 
**Bell housing: Aluminum
 
***Case fill: Attaches to case with 7 pump bolts
 
***Pan fill: Attaches to case with 5 bolts around outside of pump
 
**Case: Aluminum; 11 pan bolts; 2 adjusting screws; 2 servos; Modulator (Except PEG-A build code)
 
***Case fill: Dipstick tube in case
 
***Pan fill: Dipstick tube in pan
 
**Extension housing (2wd, Divorced 4x4): Aluminum; 6 bolts to case
 
**Adapter housing (Married 4x4): 6 bolts to case
 
***C4: Cast iron
 
***C5: Aluminum
 
**Front oil pump: 7 bolts to case
 
**Input shaft
 
***24x24 spline (1964-1969)
 
***26x26 spline (1970 only)
 
***26x24 spline (1971-1986)
 
 
====C6====
 
*'''General Information'''
 
**Years: 1966-1996
 
**Bell housing: Integral
 
***Big block (351M, 460, etc): 7-11/16" top bolt centers, No cutout on bottom
 
***Diesel (426): 7-11/16" top bolt centers; Cutout on bottom
 
***FE block (330/360/390): Round with starter at about 9:00
 
***Lincoln (460): 5-3/4" top bolt centers; Pointed top
 
***Lincoln (462): 5-1/4" top bolt centers; Pointed top
 
***Small block (302, 351W, etc): 5-1/8" top bolt centers
 
**Case: Aluminum; 11 pan bolts; 1 adjusting screw; 1 servo; Modulator
 
**Extension housing (2wd, Divorced 4x4): 6 bolts to case
 
***Aluminum
 
****7": Bearing; 0, 1, or 2 threaded bosses; With or without speedometer hole
 
****13-7/8": Bushing; With or without damper provision
 
****18": Bushing
 
***Cast Iron
 
****5-3/8": Bearing; Bolt-on cast iron speedometer housing
 
****13-3/4": Bushing;
 
****17-1/4": Bushing; Mount near case or near speedometer hole; With or without damper provision
 
**Adapter housing (Married 4x4): 6 bolts to case
 
***Aluminum
 
****5-3/4": 0, 1, or 2 threaded bosses; 1 or 2 transfer case cutouts
 
****8-3/4"
 
***Cast iron
 
****5-3/4": 1 threaded boss; 1 or 2 transfer case cutouts
 
****8-3/4"
 
**Front oil pump: 7 bolts to case
 
**Input shaft
 
***31x31 splines (1966-1971)
 
***31x30 splines (1972-1996)
 
 
===Manual===
 
 
==Mopar transmissions==
 
===Automatic===
 
[[Image:Mopar_trans.jpg‎]]
 
 
[[Image:Mopar_Automatic_A518_727_904.jpg‎]]
 
 
A518/A618 (Left), A727 (Center), A500 (Right)
 
 
===Manual===
 
 
==AMC/Rambler transmissions==
 
 
Antti-Ville Nauha (Pori, Finland) AMC CLUB FINLAND (AMCCF) long ago compiled this excellent
 
[http://www.gremlinx.com/AMC-Transmissions.htm guide to identifying AMC and Rambler transmissions].
 
 
http://www.charlietranny.com/AMC.htm
 
 
==Other transmissions==
 
===Automatic===
 
===Manual===
 
 
==Resources==
 
#[http://www.maliburacing.com/auto_tranny_id.htm GM Automatic Transmission Identification and Information] -- Very helpful identification guide with identification by pan and transmission dimensions.
 
#[http://fiedlerh.home.att.net/BW.htm Borg Warner Second Design ST-10 4-Speed Info] -- Codes, applications; a very informative page.
 
 
[[Category:Transmission]]
 
[[Category:Identification and decoding]]
 
[[Category:Good articles]]
 

Latest revision as of 09:37, 13 January 2025

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