Transmission Applications & Information
Application:
| Transmission | With Following Engine(s) |
| 3-speed Saginaw (low performance) | 230, 250, 283 |
| 3-speed Saginaw | 327/275hp |
| 3-speed H.D. Borg-Warner M13 | 230, 250, 283 |
| 3-speed H.D. Borg-Warner M13 | 327, 396 |
| 3-speed overdrive | 230, 250, 283 |
| 4-speed Saginaw Wide Ratio M20 | 283 |
| 4-speed Muncie Wide Ratio M20 | 327, 396 |
| 4-speed Muncie Close Ratio M21 | 327, 396/350hp |
| 4-speed Muncie Close Ratio M22 | All 396 V8 but no indications any were ever sold in Chevelles in 1967 |
| 2-speed Powerglide | All |
| 3-speed TH400 | 396 only |
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 | Right side of main case in front of extension housing. |
| 2-speed Powerglide | Right side by transmission oil pan. |
| 3-speed TH400 | Identification plate, right side |
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 1025/P 1025
W or P - Prefix for Warner or Muncie
10 - Month of October
25 - 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)
3-speed TH400 67 C 298
67 - Model year (Not transmission production year)
C - Model identification (C-396 Chevelle)
298 - 298th day of calendar year starting at January 1, 1966. Anything 365 or
less is 1966 calendar year, anything 366 or larger is 1967 calendar year; day
#298 is October 25, 1966.
Transmission Letter Prefix:
C ~ Cleveland - Powerglide
E ~ McKinnon - Powerglide
K ~ McKinnon - 3-speed
O ~ Saginaw - 3-speed w/overdrive
P ~ Muncie - 4-speed
R ~ Saginaw - 4-speed
S ~ Saginaw - 3-speed except overdrive
T ~ Toledo - Powerglide
W ~ Warner - 3-speed H.D.
Standard Saginaw 3-speed transmission
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.
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.
