Corvette: Year by Year
1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 19641965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976
1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988
1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Corvette Specs, Options: Year by Year
1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 19651966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978
1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004
2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
2018 2019 2020 2021 2022 2023 2024
To learn more about the 1974 Corvette, click here.
1974 Corvette Specs
Body Specs |
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| Wheelbase | 98.0 inches | ||||
| Overhang (Front) | 42.8 inches | ||||
| Overhang (Rear) | 44.7 inches | ||||
| Front Track | 58.7 inches | ||||
| Rear Track | 59.5 inches | ||||
| Length | 185.5 inches | ||||
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Ground Clearance
Rear Axle Differential to Ground |
6.2 inches | ||||
| Minimum Running Clearance |
4.2 inches
(Exhaust Pipe at X-Member) |
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| Overall Height |
47.7 inches (Coupe)
47.8 inches (Convertible) |
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| Rocker Panel to Ground (Front) | 7.5 inches | ||||
| Rocker Panel to Ground (Rear) | 7.5 inches | ||||
| Luggage Capacity |
6.1 Cubic Feet (Coupe)
5.0 Cubic Feet (Convertible) |
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| Cowl Height | 36.3 inches | ||||
| Windshield Slope Angle | 57° | ||||
| Head Room |
36.2 inches (Coupe)
37.1 inches (Convertible, Soft Top) 36.0 inches (Convertible, Hard Top) |
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| Shoulder Room | 47.9 inches | ||||
| Hip Room | 48.8 inches | ||||
| Tire Size | GR70-15B | ||||
| Recommended Tire Inflation | 20 PSI Cold (Front, Rear) | ||||
| Wheels, Regular Production | Size: 15 x 8 | ||||
| Synchronization | All Forward Gears | ||||
| Turbo Hydra-Matic (Automatic) Transmission |
1st Gear 2.48:1
2nd Gear 1.48:1 3rd Gear 1.00:1 Reverse Gear 2.08:1 |
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| Lubricant Capacity | 3 Quarts | ||||
| Four Speed M20 Transmission |
1st Gear 2.52:1
2nd Gear 1.88:1 3rd Gear 1.46:1 4th Gear 1.00:1 Reverse Gear 2.59:1 |
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Close Ratio Four Speed
M21 Transmission |
1st Gear 2.20:1
2nd Gear 1.64:1 3rd Gear 1.27:1 4th Gear 1.00:1 Reverse Gear 2.26:1 |
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| Transmission Lubricant Type |
Military MIL-L-2105-B
SAE 80 |
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| Lubricant Capacity | Four Speed Manual: 2.5 Quarts | ||||
| Differential Lubricant Type |
Military MIL-L-2105-B
SAE 80 |
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| Differential Lubricant Capacity | 3.7 pints | ||||
| Axle Ratio |
195 Horsepower Base Engine
3.08:1, 3.36:1 250 Horsepower L82 Engine 3.55:1, 3.70:1 270 Horsepower 454 Cubic Inch LS4 Engine 3.08:1, 3.36:1 (3.55:1 with M21 Transmission) |
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| Transmission Synchromesh | All Four Gears | ||||
| Standard Fuel Tank Capacity | 18 Gallons | ||||
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Steering Wheel Diameter
(Power, Manual Steering) |
15.0 inches | ||||
| Steering Ratio | 16.1:1 | ||||
| Wheel Turns |
3.4 (Street)
2.92 (Fast) |
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| Turning Diameters |
37.0 feet (Curb to Curb)
38.6 feet (Wall to Wall) |
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| Model 19467 Convertible |
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| Model 19437 Sport Coupe |
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| Shipping Weight: Weight of basic vehicle with regular equipment, including grease, oil, engine coolant to capacity and (4) gallons of gasoline and engine coolant to capacity. | |||||
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| Auxiliary Top (RPO C07) |
+69 lb.
(+59 lb. Front; +10 lb. Rear) |
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| Air Conditioning (RPO C60) |
+81 lb. (With Standard, L82 Engines)
(+65 lb. Front; +16 lb. Rear) +87 lb. (With LS4 Engine) (+70 lb. Front; +17 lb. Rear) |
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| Power Windows (RPO A31) |
+7 lb.
(+4 lb. Front; +3 lb. Rear) |
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| Power Brakes (RPO J50) |
+10 lb.
(+9 lb. Front; +1 lb. Rear) |
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L82 Engine
250 Horsepower |
+14 lb.
(+11 lb. Front; +3 lb. Rear) |
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LS4 Engine
270 Horsepower |
+200 lb.
(+178 lb. Front; +22 lb. Rear) |
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Standard, L82 350 cubic inch Engines
With Turbo Hydra Matic Transmission |
+54 lb.
(+37 lb. Front; +17 lb. Rear) |
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LS4 Engine
270 Horsepower With Turbo Hydra Matic Transmission |
+45 lb.
(+31 lb. Front; +14 lb. Rear) |
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| Power Steering |
+26 lb.
(+25 lb. Front; +1 lb. Rear) With Standard, L82 Engines +28 lb. (+27 lb. Front; +1 lb. Rear) With LS4 Engine |
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Radio, AM/FM Stereophonic
(RPO U58) |
+18 lb.
(+11 lb. Front; +7 lb. Rear) |
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Radio, AM/FM Pushbutton
(RPO U69) |
+14 lb.
(+7 lb. Front; +7 lb. Rear) |
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| Type: | V8 |
| Valve Location: | In Head |
| Bore / Stroke: |
4.00" / 3.48" (Standard, L82 350 Cubic Inch)
4.251" / 4.00" (LS4 454 Cubic Inch) |
| Displacement: |
Standard, L82 Engines: 350 Cubic Inches
LS4 Engine: 454 Cubic Inches |
| Compression Ratio: |
8.5:1 (Standard Engine)
9.0:1 (L82 Engine) 8.25:1 (LS4 Engine) |
| Crankshaft Material: | Forged Steel |
| Camshaft Material: | Cast Alloy Iron |
| Oil Pump Type: | Gear |
| Normal Oil Pressure |
32 - 40 psi @ 2,000 RPM
42 - 46 psi @ 2,000 RPM |
| Oil Pressure Gauge | Mechanical |
| Recommended Oil Grade |
Above 20°F: SAE 20W-20, SAE 10W-30, 10W-40
20W-40, 20W-50 0°F to 60°F: SAE 10W, 5W-30, 10W-30, 10W-40 Below 20°F: SAE 5W-20, 5W-30 |
| Fuel Filter | Strainer |
| Fuel Pump | Mechanical |
| Fuel Pressure | 5¼ - 6½ PSI |
| Cooling System Capacity |
350 cubic inch Standard Engine
19 Quarts (with heater) 350 cubic inch L82 Engine 18 Quarts (with heater) 454 cubic inch LS4 Engine 24 Quarts (with heater) |
| Thermostat Type | Choke |
| Radiator Cap Relief Pressure | 15 +/- 1 PSI |
| Battery |
(Standard, L82 Engines)
12 volt - 78 plate
3,250 Watts @ 0° F (LS4 Engine) 12 volt - 90 plate 4,000 Watts @ 0° F |
| Thermostat Opening |
192° - 198° F (Base, LS4 Engines)
177° - 183° F (L82 Engine) |
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Brakes |
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| Type | Caliper Disc, Four Wheel Hydraulic |
| Effective Area | 78.1 Square Inches |
| Swept Area | 639.4 Square Inches |
| Disc | Vented |
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Horsepower |
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| Standard Engine (350 cubic inch) |
195 hp @ 4,400 RPM;
Torque: 275 lb-ft @ 2,800 RPM |
| RPO L82 (350 cubic inch) |
250 hp @ 5,200 RPM;
Torque: 285 lb-ft. @ 4,000 RPM |
| RPO LS4 (454 cubic inch) |
270 hp @ 4,400 RPM;
Torque: 380 lb-ft @ 2,800 RPM |
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Ignition System |
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| Coil |
Delco-Remy Base, L82 Engine: 1115270;
LS4: 1115287 |
| Coil current rating |
4 amps (engine stopped)
1.8 amps (engine running) |
| Breaker Gap | .019" |
| Ignition Timing Centrifugal Advance |
Distributor | 1112247 | Base Engine
Start: 0° @ 800 - 1,200 RPM Intermediate: 9 - 13° @ 2,400 RPM Maximum: 16 - 20° @ 4,200 RPM Distributor | 1112544* | Base Engine Start: 0° @ 850 - 1,200 RPM Intermediate: 13 - 15° @ 2,400 RPM Maximum: 20 - 24° @ 4,200 RPM Distributor | 1112150 | L82 Engine Start: 0° @ 1,000 - 1,400 RPM Intermediate: 10 - 14° @ 2,200 RPM Maximum: 18 - 22° @ 5,000 RPM Distributor | 1112114 | LS4 Engine Start: 0° @ 850 - 1,300 RPM Intermediate: 9 - 13° @ 2,400 RPM Maximum: 16 - 20° @ 4,200 RPM |
| Ignition Timing Vacuum Advance |
Distributor | 1112247 | Base Engine
Start: 0° @ 5 - 7 inches Hg Maximum: 13.5 - 20° @ 13.5 inches Hg Distributor | 1112150 | L82 Engine Start: 0° @ 5 - 7 inches Hg Maximum: 13.5 - 20° @ 12 inches Hg Distributor | 1112114 | LS4 Engine Start: 0° @ 5 - 7 inches Hg Maximum: 18.5 - 21.5° @ 15 inches Hg Distributor | 1112544* | Base Engine Start: 0° @ 5 - 7 inches Hg Maximum: 13.5 - 16.5° @ 13.5 inches Hg |
| Timing |
Base Engine: 8° BTC @ 900 RPM (Manual)
Base Engine*: 4° BTC @ 900 RPM (Manual) 8° BTC @ 600 RPM (Automatic) L82 Engine: 8° BTC @ 900 RPM (Manual) 8° BTC @ 700 RPM (Automatic) LS4 Engine: 10° BTC @ 800 RPM (Manual) 10° BTC @ 600 RPM (Automatic) |
| *Pertains to Engines Used in California | |
| Spark Plug | ACR44T (350, 454 Cubic Inch Engines) |
| Spark Plug Thread | 14 mm. |
| Spark Plug Torque | 15 lb.-ft. |
| Spark Plug Gap | .033 - .038 inch |
| Firing Order | 1-8-4-3-6-5-7-2 |
1974 Corvette Options
| RPO | Description | Production | Price |
| * | Custom Interior Trim | 19,959 (53.22%) | $154.00 |
| Optional Rear Axle Ratios | 1,219 (3.25%) | $12.00 | |
| A31 | Power Windows | 23,940 (63.84%) | $86.00 |
| A85 | Custom Shoulder Belts (standard with coupe) | 618 (1.65%) | $41.00 |
| C07 | Auxiliary Hardtop (for convertible) | 2,612 (6.96%) | $267.00 |
| C08 | Vinyl Covering (for auxiliary hardtop) | 367 (0.98%) | $329.00 |
| C50 | Rear Window Defroster | 9,322 (24.86%) | $43.00 |
| C60 | Air Conditioning | 29,497 (78.65%) | $467.00 |
| FE7 | Gymkhana Suspension | 1,905 (5.08%) | $7.00 |
| J50 | Power Brakes | 33,306 (88.81%) | $49.00 |
| L82 | 350 cu. in. 250hp Engine | 6,690 (17.84%) | $299.00 |
| LS4 | 454 cu. in. 270hp Engine | 3,494 (9.32%) | $250.00 |
| M21 | 4-Speed Manual Transmission, close ratio | 3,494 (9.32%) | n/a |
| M40 | Turbo Hydra-Matic Automatic Transmission | 25,146 (67.05%) | n/a |
| N37 | Tilt-Telescopic Steering Column | 27,700 (73.86%) | $82.00 |
| N41 | Power Steering | 35,944 (95.85%) | $117.00 |
| QRM | White Stripe Steel Belted Tires, GR70x15 | 9,140 (24.37%) | $32.00 |
| QRZ | White Letter Steel Belted Tires, GR70x15 | 24,102 (64.27%) | $45.00 |
| U05 | Dual Horns | 5,258 (14.02%) | $4.00 |
| U58 | AM-FM Radio, stereo | 19,581 (52.21%) | $276.00 |
| U69 | AM-FM Radio | 17,374 (46.33%) | $173.00 |
| UA1 | Heavy Duty Battery (standard with LS4) | 9,169 (24.45%) | $15.00 |
| UF1 | Map Light (on rearview mirror) | 16,101 (42.93%) | $5.00 |
| YF5 | California Emission Test | n/a | $20.00 |
| Z07 | Off Road Suspension and Brake Package | 47 (0.13%) | $400.00 |
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Total Production:
37,502
Notes: Base Corvette Coupe with 350 cu. in. 195 hp engine and wide ratio four speed manual transmission: $6,001.50. |
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Colors
| Code | Exterior | Quantity | Interior | Soft Top | Wheels |
| 10 | Classic White | n/a | Black / Dark Blue / Dark Red / Neutral / Saddle / Silver | Black / White | Silver |
| 14 | Silver Mist | n/a | Black / Dark Blue / Dark Red / Neutral / Silver | Black / White | Silver |
| 17 | Corvette Gray | n/a | Black / Dark Blue / Dark Red / Neutral / Saddle / Silver | Black / White | Silver |
| 22 | Corvette Medium Blue | n/a | Black / Dark Blue / Silver | Black / White | Silver |
| 48 | Dark Green | n/a | Black / Neutral / Saddle / Silver | Black / White | Silver |
| 56 | Bright Yellow | n/a | Black / Neutral / Saddle / Silver | Black / White | Silver |
| 68 | Dark Brown | n/a | Black / Neutral / Saddle / Silver | Black / White | Silver |
| 74 | Medium Red | n/a | Black / Dark Red / Neutral / Saddle / Silver | Black / White | Silver |
| 76 | Mille Miglia Red | n/a | Black / Dark Red / Neutral / Saddle / Silver | Black / White | Silver |
| 80 | Corvette Orange | n/a | Black / Neutral / Saddle / Silver | Black / White | Silver |
