Transmission Applications & Information

Application:

Transmission	With Following Engine(s)
3-speed Saginaw (low performance)	194, 230, 283
3-speed Saginaw	327/275hp
3-speed H.D. Borg-Warner M13	All (194, 230, 283, 327 after March)
3-speed overdrive M10	194, 230, 283
4-speed Muncie Wide Ratio M20	All V8
4-speed Muncie Close Ratio M21	327, 396/360hp
4-speed Muncie Close Ratio M22	All 396 V8
4-speed Saginaw	283, 327 (after March)
2-speed Powerglide	All

Date Code Location/Examples:

Transmission	Location
3-speed Saginaw	Left side of main case, on boss, below and to rear of side cover.
3-speed H.D. Borg-Warner M13	Right side of main case in front of extension housing. Standard transmission for SS 396; not available with other engines until approximately March of 1966.
4-speed Muncie	Right side of main case in front of extension housing.
2-speed Powerglide	Right side by transmission oil pan.

Examples:
3-speed (except H.D.) S 10 25
S - Prefix for Saginaw 3-speed overdrive
10 - Month of October
25 - Day of month

3-speed H.D./Muncie 4-speed W 1124/P 1124
W or P - Prefix for Warner or Muncie
11 - Month of November
24 - Day of month 2-speed Powerglide C 10 25 D
C - Cleveland Powerglide
10 - Month of October
25 - Day of month
D - Day shift (N-night shift)

Transmission Letter Prefix:
C ~ Cleveland - Powerglide 283
P ~ Muncie - 4-speed
S ~ Saginaw - 3-speed, overdrive
T ~ Toledo - Powerglide 283, 327, 396
R ~ Saginaw - 4-speed
W ~ Borg-Warner - 3-speed H.D.

File Photo
Standard Saginaw 3-speed transmission

File Photo
1964 to 1968 Muncie 4-speed transmissions can be identified from later models by the way the transmission arms attach. Early Muncie side covers had a stud and the shift arm attached with a nut on the stud while the 1969 and later model side covers had a hole and the shift arms attached with a bolt.

File Photo
The Saginaw 4-speed transmission was also used and shown for "M20 PROD V-8 ENG & R.P.O. L30". Easily identified by the reverse gear being on the main case instead of the tail housing.