Corvette: Year by Year

1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964
1965 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 1965
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

To learn more about the 1974 Corvette, click here.

1974 Corvette Specs

Body Specs

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

Ground Clearance
Rear Axle Differential to Ground

6.2 inches

Minimum Running Clearance

4.2 inches
(Exhaust Pipe at X-Member)

Overall Height

47.7 inches (Coupe)
47.8 inches (Convertible)

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)

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)

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

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

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

Transmission Lubricant Type

Military MIL-L-2105-B
SAE 80

Lubricant Capacity

Four Speed Manual: 2.5 Quarts

Differential Lubricant Type

Military MIL-L-2105-B
SAE 80

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)

Transmission Synchromesh

All Four Gears

Standard Fuel Tank Capacity

18 Gallons

Steering Wheel Diameter
(Power, Manual Steering)

15.0 inches

Steering Ratio

16.1:1

Wheel Turns

3.4 (Street)
2.92 (Fast)

Turning Diameters

37.0 feet (Curb to Curb)
38.6 feet (Wall to Wall)

Weight

Model 19467 Convertible

(Curb)

Front: 1,664 lb.
Rear: 1,732 lb.
Total: 3,396 lb.

(Shipping)

Total: 3,315 lb.

Model 19437 Sport Coupe

(Curb)

Front: 1,671 lb.
Rear: 1,719 lb.
Total: 3,390 lb.

(Shipping)

Total: 3,309 lb.

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.

Weight Differentials

Auxiliary Top (RPO C07)

+69 lb.
(+59 lb. Front; +10 lb. Rear)

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)

Power Windows (RPO A31)

+7 lb.
(+4 lb. Front; +3 lb. Rear)

Power Brakes (RPO J50)

+10 lb.
(+9 lb. Front; +1 lb. Rear)

L82 Engine
250 Horsepower

+14 lb.
(+11 lb. Front; +3 lb. Rear)

LS4 Engine
270 Horsepower

+200 lb.
(+178 lb. Front; +22 lb. Rear)

Standard, L82 350 cubic inch Engines
With Turbo Hydra Matic Transmission

+54 lb.
(+37 lb. Front; +17 lb. Rear)

LS4 Engine
270 Horsepower
With Turbo Hydra Matic Transmission

+45 lb.
(+31 lb. Front; +14 lb. Rear)

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

Radio, AM/FM Stereophonic
(RPO U58)

+18 lb.
(+11 lb. Front; +7 lb. Rear)

Radio, AM/FM Pushbutton
(RPO U69)

+14 lb.
(+7 lb. Front; +7 lb. Rear)

Engine Specs
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)
Brakes
Type	Caliper Disc, Four Wheel Hydraulic
Effective Area	78.1 Square Inches
Swept Area	639.4 Square Inches
Disc	Vented
Horsepower
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
Ignition System
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
	Optional Rear Axle Ratios	1,219 (3.25%)	$12.00
*	Custom Interior Trim	19,959 (53.22%)	$154.00
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
Total Production: 37,502 Coupe: 32,028 (85.40%) Convertible: 5,474 (14.60%) Notes: Base Corvette Coupe with 350 cu. in. 195 hp engine and wide ratio four speed manual transmission: $6,001.50. Base Corvette Convertible with 350 cu. in. 195 hp engine and wide ratio four speed manual transmission: $5,765.00.

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

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