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1968 - 1982 Corvette Powertrain Combinations
1968 Corvette Powertrain Combinations
| Engine Size |
H. P. @ RPM |
Torque @ RPM |
Compression Ratio |
Transmission Combination |
Axle Ratios** |
| A |
B |
C |
D |
| 327 |
300
@
5000 |
360
@
3400 |
10.0:1 |
Manual |
Base
A/C |
3.36
3.36 |
3.08
3.08 |
--
-- |
--
-- |
| Auto. |
Base
A/C |
3.08
3.08 |
--
-- |
--
-- |
--
-- |
| 327 |
350
@
5800
|
360
@
3600 |
11.0:1 |
4-Spd |
Base
A/C |
3.36
3.36 |
--
-- |
3.55
3.55 |
--
-- |
| 4-Spd* |
Base
A/C |
3.70
3.70 |
--
-- |
4.11
4.11 |
--
-- |
| 427 |
390
@
5400 |
460
@
3600 |
10.25:1 |
4-Spd |
Base
A/C |
3.08
3.08 |
--
-- |
3.36
3.36 |
--
-- |
| 4-Spd* |
Base
A/C |
3.36
3.36 |
3.08
3.08 |
3.55
3.55 |
3.70
3.70 |
| Auto. |
Base
A/C |
3.08
3.08 |
2.73
2.73 |
--
-- |
--
-- |
| 427 |
400
@
5400 |
460
@
3600 |
10.25:1 |
4-Spd |
Base
A/C |
3.08
3.08 |
--
-- |
3.36
3.36 |
--
-- |
| 4-Spd* |
Base
A/C |
3.36
3.36 |
3.08
3.08 |
3.55
3.55 |
3.70
3.70 |
| Auto. |
Base
A/C |
3.08
3.08 |
2.73
7.73 |
--
-- |
--
-- |
| 427 |
435
@
5800 |
460
@
4000 |
11.0:1 |
4-Spd* |
3.55 |
3.36 |
3.70 |
4.11 |
| 427 |
430
@
4600 |
485
@
4000 |
12.5:1 |
4-Spd* |
3.36 |
3.08 |
3.55 |
3.70 4.11
4.56 |
* Indicates close-ratio-4-Speed
**A - Standard; B - Economy; C - Performance;
D - Special Purpose
Note: Positraction axles were available optionally for 327 cubic-inch
engines with manual transmissions.
All other engine/transmission combinations were available as Positraction
only.
1969 Corvette Powertrain Combinations
| Engine |
Transmission |
Rear Axle Ratio (:1) |
| Without Air Cond. |
With Air Cond. |
| Std. |
Optional |
Std. |
Optional |
| Econ |
Perf |
Spcl |
Econ |
Perf |
Spcl |
| BASE ENGINE |
| 300 HP
Turbo-Fire 350
350-Cu.-In. V8
|
3-Speed
(2.54:1 Low) |
3.36
* |
3.08
** |
|
|
3.36
* |
3.08
** |
|
|
| 4-speed
(2.52:1 Low) |
| Turbo
Hydra-Matic |
3.08
** |
|
3.08
** |
|
| OPTIONAL ENGINES |
| 350 HP
Turbo-Fire 350
350-Cu.-In. V8
RPO L46 |
4-speed
(2.52:1 Low) |
3.36
* |
|
3.55
** |
|
3.36
* |
|
3.55
** |
|
| 4-Speed
(2.20:1 Low)
|
3.70
* |
4.11
** |
3.70
* |
4.11
** |
| 390 HP
Turbo-Jet 427
427-Cu.-In. V8
RPO L36 |
4-speed
(2.52:1 Low) |
3.08
** |
|
3.36
** |
|
3.08
** |
|
|
|
| 4-Speed
(2.20:1 Low)
|
3.36
** |
3.08
** |
3.55
** |
3.70
** |
Air Conditioning Not Available |
| Turbo
Hydra-Matic |
3.08
** |
2.73
** |
|
|
3.08
** |
2.73
** |
|
|
| 400 HP
Turbo-Jet 427
427-Cu.-In. V8
RPO L68 |
4-speed
(2.52:1 Low) |
3.08
** |
|
3.36
** |
|
3.08
** |
|
|
|
| 4-Speed
(2.20:1 Low) |
3.36
** |
3.08
** |
3.55
** |
3.70
** |
Air Conditioning
Not Available |
| Turbo
Hydra-Matic |
3.08
** |
2.73
** |
|
|
3.08
** |
2.73
** |
|
|
| 435 HP
Turbo-Jet 427
427-Cu.-In. V8
RPO L71 |
4-Speed
(2.20:1 Low) |
3.55
** |
3.36
** |
3.70
** |
4.11
** |
Air
Conditioning
Not Available |
| Turbo
Hydra-Matic |
3.08
** |
2.73
** |
3.36
** |
|
| SPECIAL HIGH PERFORMANCE
ENGINE (OFF-ROAD APPLICATION ONLY) |
| 430 HP
Turbo-Jet 427
427-Cu.-In. V8
RPO L88 |
H.D. 4-Speed
(2.20:1 Low) |
3.36
** |
3.08
** |
3.55
** |
3.70
4.11
4.56
** |
Air
Conditioning
Not Available |
| Turbo
Hydra-Matic |
3.08
** |
2.73
** |
3.36
** |
|
*Positraction available. **Positraction
required.
1970 Corvette Powertrain Combinations
| Engine |
Transmission |
Ratio Without Air Conditioning |
Ratio With Air Conditioning |
|
Std. |
Optional |
Std. |
Optional |
| Econ. |
Perf. |
Econ. |
Perf. |
| BASE ENGINE |
| 300 HP
350-Cu.-In. V8
Turbo-Fire 350
|
Turbo Hydra-matic |
3.08 |
- |
3.36 |
3.08 |
- |
3.36 |
| 4-Speed (2.52:1
low) |
3.36 |
3.08 |
- |
3.36 |
3.08 |
- |
| OPTIONAL ENGINES |
| 350 HP (RPO L46)
350-Cu.-In. V8
Turbo-Fire 350 |
4-Speed (2.20:1 low) |
3.70 |
- |
4.11 |
Air Conditioning Not
Available |
| 4-speed (2.52:1 low) |
3.36 |
- |
- |
3.36 |
- |
3.55 |
| 370 HP (RPO LT1)
350-Cu.-In. V8
Turbo-Fire 350 |
4-Speed (2.20:1 low) |
3.70 |
3.55 |
4.11 |
Air Conditioning
Not Available |
| 4-speed (2.52:1 low) |
3.55 |
3.36 |
3.70 |
| 390 HP (RPO LS5)
454-Cu.-In. V8
Turbo-Jet 454 |
Turbo Hydra-matic |
3.08 |
2.73 |
- |
3.08 |
- |
- |
| 4-Speed (2.20:1 low) |
3.36 |
3.08 |
3.55* |
Air Conditioning Not
Available |
| 4-speed (2.52:1 low) |
3.08 |
- |
3.36 |
3.08 |
- |
- |
| 460 HP (RPO LS7)
454-Cu.-In. V8
Turbo-Jet 454 |
Turbo Hydra-matic |
3.08 |
- |
3.36 |
Air
Conditioning Not Available |
| 4-Speed (2.20:1 low) |
3.36 |
3.08 |
3.55 |
*Special 3.70 ratio also available.
Note: The LS7 engine was not produced for retail sale.
1971 Corvette Powertrain Combinations
| Engine |
Transmission |
Ratio Without Air
Conditioning |
Ratio With Air Conditioning |
| Std. |
Optional |
Std. |
Optional |
| Econ. |
Perf. |
Econ. |
Perf. |
| Base engine |
| 270-hp (210-hp†)
350-Cu.-In.
Turbo-Fire 350 V8 |
Turbo Hydra-matic
|
3.08 |
- |
3.36 |
3.08 |
- |
3.36 |
| 4-Speed (2.52:1 low) |
3.36 |
3.08 |
- |
3.36 |
3.08 |
- |
| Available engines |
| 330-hp (275-hp†)
350-Cu.-In. (RPO LT1)
Turbo-Fire 350 V8 |
4-Speed (2.20:1
low) |
3.70 |
3.55 |
4.11 |
Air
Conditioning Not Available |
| 4-speed (2.52:1
low) |
3.55 |
3.36 |
3.70 |
| 365-hp (285-hp†)
454-Cu.-In. (RPO LS5)
Turbo-Jet 454 V8 |
Turbo Hydra-matic
|
3.08 |
- |
3.36 |
3.08 |
- |
- |
| 4-Speed (2.20:1 low)
|
3.36 |
3.08 |
3.55* |
Air Conditioning Not
Available |
| 4-speed (2.52:1 low) |
3.08 |
- |
3.36 |
3.08 |
- |
- |
| 425-hp (325-hp†)
454-Cu.-In. (RPO LS6)
Turbo-Jet 454 V8 |
Turbo Hydra-matic
|
3.08 |
- |
3.36 |
Air Conditioning
Not Available |
| 4-Speed (2.20:1 low)
|
3.36 |
3.08 |
3.55 |
| Special 4-Speed (2.20:1 low) |
3.36 |
3.08 |
3.55** |
†SAE net (as installed) horsepower rating. *Special
3.70 ratio also available. **Special 3.70 or 4.11 ratio also
available.
1972 Corvette Powertrain Combinations
| ENGINES |
TRANSMISSIONS |
POSITRACTION AXLE RATIOS |
| Std. |
Economy |
Perf. |
Special |
| Standard: 200-hp †
Turbo-Fire 350 V8 |
Std: 4-Speed (2.52:1 low) |
3.36 |
3.08 |
- |
- |
| Turbo Hydra-matic |
3.08 |
- |
3.36 |
- |
| AVAILABLE ENGINES |
| 255-hp †
Turbo-Fire 350 V8 (RPO LT1) |
4-Speed (2.52:1 low) |
3.55 |
3.36 |
3.70 |
- |
| 4-Speed (2.20:1 low) |
3.70 |
3.55 |
4.11 |
- |
| Special 4-Speed (2.20:1 low) |
3.36 |
3.08 |
3.55 |
3.70,
4.11 |
| 270-hp†
Turbo-Jet 454 V8 (RPO LS5*) |
4-Speed (2.52:1 low) |
3.08 |
- |
3.36 |
- |
| 4-Speed (2.20:1 low) |
3.36 |
3.08 |
3.55 |
3.70 |
| Turbo Hydra-matic |
3.08 |
- |
3.36** |
- |
†Net horsepower ratings, in accordance with Society of Automotive Engineers
Standards, represent the power output of engines as installed in the automobile.
*Not available in California.
**Not available with air conditioning.
1973 Corvette Powertrain Combinations
| Engine Type
|
Compr. Ratio
|
Net H.P. |
Net Torque |
Transmission
|
Positraction Axle Ratios(:1) |
| "A"
|
"B" |
"C" |
| 350
L48 |
8.5:1 |
190 |
270 |
4-Speed Manual WR |
3.36 |
3.08 |
- |
| Turbo Hydra-Matic* |
3.08 |
- |
3.36 |
| 350
L82* |
9.0:1 |
250 |
285 |
4-Speed Manual WR |
3.55 |
3.36 |
3.70# |
| 4-Speed Manual CR* |
3.70 |
3.55a |
- |
| Turbo Hydra-Matic* |
3.55 |
3.36 |
3.70 |
| 454
LS4* |
8.25:1 |
275 |
395 |
4-Speed Manual WR |
3.08 |
- |
3.36 |
| 4-Speed Manual CR* |
3.36b |
- |
3.55b |
| Turbo Hydra-Matic* |
3.08 |
- |
3.36 |
*Optional
A - Standard Axle
B - Economy Axle (optional)
C - Performance Axle (optional)
# - 3.55 with Air Conditioning
WR - Wide Ratio (2.52:1 low)
CR - Close Ratio (2.20:1 low)
Air Conditioning not available with 3.70:1 axle ratio or Z07 Off-Road Suspension
Package.
a - 3.70 standard with RPO Z07 Off-Road Package; 4.11, 3.55 & 3.36
optional
b - With RPO Z07, 3.55 standard; 3.08 & 3.36 optional
1974 Corvette Powertrain Combinations
| Engine Type
|
Compr. Ratio
|
Net H.P. |
Net Torque |
Transmission
|
Positraction Axle Ratios(:1) |
| "A"
|
"B" |
"C" |
| 350
L48 |
8.5:1 |
195 |
275 |
4-Speed Manual WR |
3.36# |
3.08# |
- |
| Turbo Hydra-Matic* |
3.08# |
- |
3.36# |
| 350
L82* |
9.0:1 |
250 |
285 |
4-Speed Manual WR |
3.55# |
- |
3.70 |
| 4-Speed Manual CR* |
3.70 |
3.55#a |
- |
| Turbo Hydra-Matic* |
3.55# |
- |
3.70 |
| 454
LS4* |
8.25:1 |
270 |
380 |
4-Speed Manual WR |
3.08# |
- |
3.36 |
| 4-Speed Manual CR* |
3.36#b |
3.08# |
3.55b |
| Turbo Hydra-Matic* |
3.08# |
- |
3.36 |
*Optional
A - Standard Axle
B - Economy Axle (optional)
C - Performance Axle (optional)
WR - Wide Ratio (2.52:1 low Muncie - 2.64:1 low Warner)
CR - Close Ratio (2.20:1 low Muncie - 2.43:1 low Warner)
# - Air Conditioning available
Air Conditioning not available with Z07 Off-Road Package.
a - 3.70 standard with RPO Z07 Off-Road Package; 4.11, 3.55 & 3.36
optional
b - With RPO Z07, 3.55 standard; 3.08 & 3.36 optional
1975 Corvette Powertrain Combinations
| Engine Type
|
Compr. Ratio
|
Net H.P. |
Net Torque |
Transmission
|
Positraction Axle Ratios(:1) |
| "A"
|
"B" |
"C" |
| 350
L48 |
8.5:1 |
165 |
255 |
4-Speed Manual WR |
3.36 |
3.08 |
- |
| Turbo Hydra-Matic 400* |
3.08 |
2.73 |
- |
| 350
L82* |
9.0:1 |
205 |
255 |
4-Speed Manual WR |
3.55 |
- |
- |
| 4-Speed Manual CR* |
3.55 |
- |
3.70 |
| Turbo Hydra-Matic 400* |
3.36 |
- |
3.55 |
*Optional
A - Standard Axle
B - Highway Axle (optional)
C - High-Altitude/Performance Axle (optional)
WR - Wide Ratio ( 2.64:1 low )
CR - Close Ratio ( 2.43:1 low )
Air Conditioning available with all axle ratios except 3.70.
1976 Corvette Powertrain Combinations
| Engine Type
|
Compr. Ratio
|
Net H.P. |
Net Torque |
Transmission
|
Positraction Axle Ratios(:1) |
| "A"
|
"B" |
"C" |
| 350
L48 |
8.5:1 |
180 |
270 |
4-Speed Manual WR# |
3.36 |
3.08 |
- |
| Turbo Hydra-Matic 350* |
3.08 |
- |
- |
| 350
L82*# |
9.0:1 |
210 |
255 |
4-Speed Manual WR |
3.55 |
- |
- |
| 4-Speed Manual CR* |
3.55 |
- |
3.70 |
| Turbo Hydra-Matic 400* |
3.36 |
- |
3.55 |
*Optional
# - Not available in California
A - Standard Axle
B - Highway Axle (optional)
C - High-Altitude/Performance Axle (optional)
WR - Wide Ratio ( 2.64:1 low )
CR - Close Ratio ( 2.43:1 low )
Air Conditioning available with all axle ratios except 3.70.
1977 Corvette Powertrain Combinations
| Engine Type
|
Compr. Ratio
|
Net H.P. |
Net Torque |
Transmission
|
Positraction Axle Ratios(:1) |
| "A"
|
"B" |
"C" |
| 350
L48 |
8.5:1 |
180 |
270 |
4-Speed Man. WR#** |
3.36 |
3.08 |
- |
| Turbo Hydra-Matic 350* |
3.08 |
- |
3.08 |
| 350
L82*# |
9.0:1 |
210 |
255 |
4-Speed Man. WR** |
3.70 |
3.55 |
- |
| 4-Speed Man. CR*/** |
3.70 |
3.55 |
3.55 |
| Turbo Hydra-Matic 400* |
3.55 |
- |
- |
*Optional
** With High-Altitude Emission equipment
# - Not available in California
A - Standard Axle
B - Optional Axle
C - Axle with High-Altitude Emission Equipment (optional)
"A" & "B" - Below 4000 feet altitude in 49 states
and all altitudes in California
"C" - Above 4000 feet altitude in all states except California
WR - Wide Ratio ( 2.64:1 low )
CR - Close Ratio ( 2.43:1 low )
Air Conditioning available with all axle ratios except 3.70.
1978 Corvette Powertrain Combinations
| Engine Type |
Net H.P. |
4-Speed Man.
2.85:1 low |
4-Speed Man.
2.64:1 low |
4-Speed Man.
2.43:1 low |
Turbo Hydra-Matic
350 |
| Below 4K ft. |
Abv. 4K |
| 350 L48 Fed |
185/175* |
3.36:1 |
N/A |
N/A |
3.08:1 |
3.55:1 |
| 350 L48 Calif |
175 |
N/A |
N/A |
N/A |
3.55:1 |
N/A |
| 350 L82** |
220 |
N/A |
3.70:1
3.36:1# |
3.70:1 |
3.55:1 |
N/A |
* 175 horsepower rating with High-Altitude Emission Equipment
** Optional L82 engine not available in California; Maryland; Florida;
Oregon; Washington; Boston; Chicago; Des Plaines, IL; Barrington, IL; Grand
Rapids, MI; and Cook County, IL.
# - 3.70 axle is standard; 3.36 is available highway ratio
N/A - Not Available
Note: California Emission Equipment required for registration
in California. In other states, High-Altitude Emission Equipment may be
required in areas 4,000 feet or more above sea level.
Air conditioning available with all axle ratios except 3.70.
1979 Corvette Powertrain Combinations
| Engine Type |
Net H.P. |
4-Speed Man.
2.85:1 low |
4-Speed Man.
2.64:1 low |
4-Speed Man.
2.43:1 low |
Turbo Hydra-Matic 350 Transmission |
| 350 L48 Fed |
195 |
3.36:1 |
N/A |
N/A |
3.55:1 |
| 350 L48 H/A |
195 |
N/A |
N/A |
N/A |
3.55:1 |
| 350 L48 Calif. |
195 |
N/A |
N/A |
N/A |
3.55:1 |
| 350 L82* |
225 |
N/A |
3.70:1
3.36:1# |
3.70:1 |
3.55:1 |
* Optional L82 engine not available in California
# - 3.70 axle is standard; 3.36 is available Highway ratio
N/A - Not Available
H/A - High-Altitude Emission
Note: California Emission Equipment required for registration
in California. In other states, High-Altitude Emission Equipment may be
required in areas 4,000 feet or more above sea level.
1980 Corvette Powertrain Combinations
| Engine Type |
Net H.P. |
4-Speed Manual
2.88:1 low |
Turbo Hydra-Matic 350
Transmission |
| 350 L48 |
190 |
3.07:1 |
3.07:1 |
| 305 LG4 Calif. |
180 |
N/A |
3.07:1 |
| 350 L82* |
230 |
N/A |
3.07:1 |
* Optional L82 engine
N/A - Not Available
1981 Corvette Powertrain Combinations
| Engine Type |
Net H.P. |
4-Speed Manual
2.88:1 low |
Turbo Hydra-Matic
350 Transmission |
| 350 L81 |
190 |
2.72:1 |
2.87:1 |
1982 Corvette Powertrain Combinations
| Engine Type |
Net H.P. |
Turbo Hydra-Matic
700-R4 Transmission |
| 350 L83 |
200 |
2.72:1 Standard 2.87:1 Collector Edition |
|
