Transmission identification

From Crankshaft Coalition Wiki

Contents 1 PREAMBLE 2 GM transmissions 2.1 Automatic 2.1.1 General information 2.1.2 TH250, TH250C, TH350, TH350C, TH375B transmissions 2.1.2.1 List of vehicles that used the TH350 as original equipment: 2.2 Manual 3 Ford Transmissions 3.1 Automatic 3.1.1 General information 3.1.2 Ford-o-matic S3 3.1.3 C4/C5 3.1.4 C6 3.2 Manual 4 Mopar transmissions 4.1 Automatic 4.2 Manual 5 AMC/Rambler transmissions 6 Other transmissions 6.1 Automatic 6.2 Manual 7 Resources

[edit] PREAMBLE

The purpose and function of this page is to acquaint people with the identification of popular North American made transmissions based on pan shape, case outline, and OEM numbering. This page also offers overall dimension, gear ratios and number of gears available in each transmission, and originating year, make and model.

[edit] GM transmissions

[edit] Automatic

[edit] General information

Image Number		Transmission(s)		Pan Bolts		1st Gear		2nd Gear		3rd Gear		4th Gear		Reverse
1		Aluminum Powerglide		14		1.76/1.82		1.00		-		-		1.76/1.82
2		TH200 (Metric), TH200C (Metric)		11		2.54		1.57		1.00		-		2.06
3		TH250, TH250C, TH350, TH350C, TH375B		13		2.52		1.52		1.00		-		1.94
4		TH375C, TH400, TH475, 3L80, 3L80HD		13		2.48		1.48		1.00		-		2.07
5		TH200-4R		16		2.54		1.57		1.00		0.67		2.06
6		TH700-R4, 4L60, 4L60E		16		3.06		1.62		1.00		0.70		2.29
7		4L80E		17		2.48		1.48		1.00		0.75		2.07

NOTE: An aluminum powerglide also exists with an 18" extension housing.

[edit] TH250, TH250C, TH350, TH350C, TH375B transmissions

Identifying transmissions in the TH350 family.

Transmission		Type		Wire Plug		Band Adjusting Screw		Tail Housing
TH250		Non-lockup		None		Yes		6"
TH250C		Lockup		Driver Side		Yes		6" or 9"
TH350		Non-lockup		None		None		None, 6", or 9"
TH350C		Lockup		Driver side		None		None, 6", or 9"
TH375B		Non-lockup		None		None		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.

[edit] 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

[edit] Manual

[edit] Ford Transmissions

[edit] Automatic

[edit] General information

Gear Ratios of Popular Ford Automatic Transmissions

Transmission		1st Gear		2nd Gear		3rd Gear		4th Gear
C4/C5/C6		2.46		1.46		1.00		-
AOD/AODE		2.40		1.47		1.00		0.67
4R70W		2.84		1.55		1.00		0.70
E4OD/4R100		2.71		1.54		1.00		0.71

C3/C4/C5/C6/AOD Series Comparison

3-Speed Identification

Transmission(s)		Pan Bolts
C3		13
C4, C5		11
C6		17
FX Cruiso, MX Cruiso, FMX, CW		14

4-Speed Identification

Transmission(s)		Pan Bolts
A4LD, 4R44E, 4R55E		18
AOD, AODE, 4R70W		14
E4OD, 4R100		20

[edit] Ford-o-matic S3

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:

1. The small case (from 1951 to 1966).
2. The medium case (from 1955 to 1968).
3. 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.

[edit] 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)

[edit] 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)

[edit] Manual

[edit] Mopar transmissions

[edit] Automatic

A518/A618 (Left), A727 (Center), A500 (Right)

[edit] Manual

[edit] AMC/Rambler transmissions

Antti-Ville Nauha (Pori, Finland) AMC CLUB FINLAND (AMCCF) long ago compiled this excellent guide to identifying AMC and Rambler transmissions.

http://www.charlietranny.com/AMC.htm

[edit] Other transmissions

[edit] Automatic

[edit] Manual

[edit] Resources

1. GM Automatic Transmission Identification and Information -- Very helpful identification guide with identification by pan and transmission dimensions.
2. Borg Warner Second Design ST-10 4-Speed Info -- Codes, applications; a very informative page.
3. http://pontiacpower.org/BW.htm