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Transmissions - 1967
The base transmission for all 1967 Chevelles was one of several 3-speed manual transmissions depending on the engine. All were column shifted except the heavy duty manual 3-speed in an SS 396; the SS 396 3-speed was floor shifted regardless of bench or bucket seat configuration.
As you can see in the matrices below, several versions of the 2-speed Powerglide, the 3-speed Turbo Hydra-Matic automatic transmission, and several versions of the manual 3-speed and manual 3-speed with overdrive transmissions were used based on the particular engine and its horsepower rating. The matrix represents the gear ratio multiplication factor based on the gear set in the transmission and the rear end axle ratio. The manual 4-speed transmission was available in three versions, a wide ratio aluminum Muncie M20, a close ratio M21 and heavy duty M22 - however, GM records indicate no M22 transmissions were sold in 1967 Chevelles.
Chevrolet introduced a new, light duty iron case Saginaw 4-speed for all applicable applications of V8 engines rated 300 hp and under. This transmission carried the same RPO number as the aluminum case Muncie 4-speed, RPO M20. GM's Accumulative Production Report does not differentiate between the Saginaw M20 and the Muncie M20. Additionally the Saginaw version of the M20 came in two ratio setups, one for the base 283 V8 and one for the 327 V8. Gear ratios for the base 283 are 3.11 2.20, 1.47, 1.00 and 3.11 for reverse while the gear ratios for the 327 are 2.54, 1.80, 1.44, 1.00, and 2.54.
| ENGINE | TRANSMISSION | TOTAL GEAR REDUCTION * | AXLE RATIO |
|||||
| 1st | 2nd | 3rd | 4th | Rev | ||||
| 140 hp Turbo-Thrift L6 |
3-speed | 9.58 | 5.64 | 3.36 | 9.91 | 3.08:1 | ||
| Overdrive | Out | 10.54 | 6.22 | 3.70 | 10.92 | 3.70:1 | ||
| In | 7.40 | 4.37 | 2.59 | 7.62 | 3.70:1 | |||
| H.D. 3-speed | 9.61 | 5.78 | 3.36 | 9.91 | 3.36:1 | |||
| 155 hp Turbo-Thrift L6 RPO L22 |
3-speed | 8.78 | 5.17 | 3.08 | 9.09 | 3.08:1 | ||
| Overdrive | Out | 10.54 | 6.22 | 3.70 | 10.92 | 3.70:1 | ||
| In | 7.40 | 4.37 | 2.59 | 7.62 | 3.70:1 | |||
| H.D. 3-speed | 8.81 | 5.30 | 3.08 | 8.81 | 3.08:1 | |||
| 195 hp Turbo-Fire V8 |
3-speed | 8.78 | 5.17 | 3.08 | 9.09 | 3.08:1 | ||
| Overdrive | Out | 10.54 | 6.22 | 3.70 | 10.92 | 3.70:1 | ||
| In | 7.40 | 4.37 | 2.59 | 7.62 | 3.70:1 | |||
| H.D. 3-speed | 8.81 | 5.30 | 3.08 | 8.81 | 3.08:1 | |||
| 4-speed | 9.58 | 6.78 | 4.53 | 3.08 | 9.58 | 3.08:1 | ||
| 275 hp Turbo-Fire V8 RPO L30 |
3-speed | 7.82 | 4.62 | 3.08 | 7.42 | 3.08:1 | ||
| H.D. 3-speed | 7.42 | 4.84 | 3.08 | 7.42 | 3.08:1 | |||
| 4-speed | 7.82 | 5.54 | 4.43 | 3.08 | 7.82 | 3.08:1 | ||
| 325 hp Turbo-Fire V8 RPO L79 |
H.D. 3-speed | 7.98 | 5.20 | 3.31 | 7.98 | 3.31:1 # | ||
| 4-speed (2.52:1) | 8.34 | 6.22 | 4.87 | 3.31 | 8.57 | 3.31:1 # | ||
| 4-speed (2.20:1) | 7.28 | 5.43 | 4.20 | 3.31 | 7.48 | 3.31:1 # | ||
| 325 hp Turbo-Jet V8 |
H.D. 3-speed | 7.98 | 5.20 | 3.31 | 7.98 | 3.31:1 # | ||
| 4-speed | 8.34 | 6.22 | 4.83 | 3.31 | 8.57 | 3.31:1 # | ||
| 350 & 375 hp Turbo-Jet V8 RPO L34 & L78 |
3-speed | 8.56 | 5.57 | 3.55 | 8.56 | 3.55:1 # | ||
| 4-speed (2.52:1) | 8.95 | 6.67 | 5.22 | 3.55 | 9.19 | 3.55:1 # | ||
| 4-speed (2.20:1) | 7.81 | 5.82 | 4.51 | 3.55 | 8.02 | 3.55:1 # | ||
Automatic Transmission Multiplication Factors
| ENGINE | SELECTOR POSITION | TOTAL TORQUE MULTIPLICATION * |
AXLE RATIO |
| POWERGLIDE | |||
| 140 hp Turbo-Thrift L6 |
Drive Low & Reverse |
11.77:1 - 3.08:1 11.77:1 - 5.61:1 |
3.08:1 |
| 155 hp Turbo-Thrift L6 |
Drive Low & Reverse |
11.77:1 - 3.08:1 11.77:1 - 5.61:1 |
3.08:1 |
| 195 hp Turbo-Fire V8 |
. | 11.77:1 - 3.08:1 11.77:1 - 5.61:1 |
3.08:1 |
| 275 hp Turbo-Fire V8 |
Drive Low & Reverse |
11.40:1 - 3.08:1 11.40:1 - 5.42:1 |
3.08:1 |
| 325 hp Turbo-Fire V8 |
not available with this engine |
not available with this engine |
not available with this engine |
| 325 hp Turbo-Jet V8 |
Drive Low & Reverse |
11.36:1 - 3.07:1 11.36:1 - 5.40:1 |
3.07:1 # |
| 350 hp Turbo-Jet V8 |
Drive Low & Reverse |
12.24:1 - 3.31:1 12.24:1 - 5.83:1 |
3.31:1 # |
| 375 hp Turbo-Jet V8 |
not available with this engine |
not available with this engine |
not available with this engine |
| TURBO HYDRA-MATIC 400 | |||
| 325 hp Turbo-Jet V8 |
Drive Low Second Reverse |
13.81:1 - 2.73:1 13.81:1 - 6.77:1 13.81:1 - 4.04:1 11.58:1 - 5.83:1 |
3.31:1 # |
| 350 hp Turbo-Jet |
Drive Low Second Reverse |
15.53:1 - 3.07:1 15.53:1 - 7.61:1 15.53:1 - 4.54:1 13.02:1 - 6.39:1 |
3.07:1 # |
| 375 hp Turbo-Jet |
no data available | no data available | |
* Axle ratio times transmission ratio.
# 12-bolt rear end.
3-Speed Manual Transmission - Cast Iron
| ENGINE | TYPE | L6 230 |
V8 283 |
L6 250 |
V8 327 |
| Availability (RPO) | standard | L22 | L30 | ||
| Gears | Ratio - 1st | 2.85 | 2.54 | ||
| Ratio - 2nd | 1.68 | 1.50 | |||
| Ratio - 3rd | 1.00 | 1.00 | |||
| Ratio - Reverse | 2.95 | 2.63 | |||
3-Speed Manual Transmission - Cast Iron & Borg Warner Heavy Duty M13
| ENGINE | TYPE | L6 230 |
V8 283 |
L6 250 |
V8 327 |
V8 396 |
| Availability (RPO) | standard | L22 | L30/ L79 | L34, L35, L78 | ||
| Gears | Ratio - 1st | 2.86 | 2.54/2.41 | 2.41 | ||
| Ratio - 2nd | 1.72 | 1.50/1.57 | 1.57 | |||
| Ratio - 3rd | 1.00 | 1.00/1.00 | 1.00 | |||
| Ratio - Reverse | 2.86 | 2.63/2.41 | 2.41 | |||
4-Speed Manual Transmission
| ENGINE | TYPE | V8 283 |
V8 327 |
V8 396 |
V8 327/396 |
|
| Availability (RPO) | standard | L30 | L35 | L34/L78 | ||
| M20 | M21 | |||||
| Gears | Ratio - 1st | 3.11 | 2.54 | 2.52 | 2.52 | 2.20 |
| Ratio - 2nd | 2.20 | 1.80 | 1.88 | 1.88 | 1.64 | |
| Ratio - 3rd | 1.47 | 1.44 | 1.47 | 1.47 | 1.27 | |
| Ratio - 4th | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | |
| Ratio - Reverse | 3.11 | 2.54 | 2.59 | 2.59 | 2.26 | |
Clutch/Flywheel
| ENGINE | TYPE | L6 230 |
L6 250 |
L6 230 |
V8 283 |
V8 327 |
V8 396 |
|||
| Availability | Base | L22 | Base | Base | L30, L79 | L34, L35 | ||||
| Clutch for | 3-speed | M01 | 3-speed | M01 | 4-speed | 3-,4-speed | M01 | 3-, 4-speed | ||
| Type | Single dry disc | Single dry disc, centrifugal | ||||||||
| Clutch cover | Material | Cast iron | Nodular iron | |||||||
| Spring type | Diaphragm | Diaphragm, bent finger | ||||||||
| Clutch plate | Dampers | (a) | (b) | 12 coil springs (6 sets of two) |
10 coil springs (5 sets of two) |
|||||
| OD | 9.12 | 10.00 | 10.00 | 11.00 | 10.40 | 11.00 | ||||
| ID | 6.12 | 6.00 | 6.50 | 6.50 | 6.50 | 6.50 | ||||
M01 - option for heavy duty clutch
(a) - 6 outer coil springs and 3 inner coil springs equally spaced
(b) - 6 coil springs
Want more in-depth information on 1966/1967 Chevelles? Take a test drive of my 1966/1967 Chevelle Reference CD/Factory Assembly Instruction Manuals and check out my Chevelle books.
1967 Chevelle Links
- Only items in ALL CAPS and with an asterisk ( * ) are active
- PRODUCTION NUMBERS *
- Vehicle Identification Number
- Engines
- TRANSMISSIONS *
- Rear Axle
- Interior Trim
- Exterior Paint
- Interior/Exterior Combinations
- Regular Production Options
- Dealer Installed Accessories
- SS 396 *
- FACTS/TRIVIA *
- Trim Tag Data
- PLANT PRODUCTION NUMBERS *
- TIRES & WHEELS *
