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1975 Specs

More About the 1975 Corvette
1975 Chevrolet Corvette Convertible

1975 Chevrolet Corvette Convertible

Close1975 Chevrolet Corvette Convertible

Body Specs

Wheelbase: 98.0 inches
Overhang (Front): 42.4 inches
Overhang (Rear): 44.8 inches
Front Track: 58.7 inches
Rear Track: 59.5 inches
Length: 185.2 inches
Ground Clearance
Rear Axle Differential to Ground:
6.2 inches
Minimum Running Clearance: 4.2 inches
(Exhaust Pipe at X-Member)
Overall Height: 48.1 inches (Coupe)
48.2 inches (Convertible, Soft Top)
48.1 inches (Convertible, Hard Top)
Rocker Panel to Ground (Front): 7.7 inches
Rocker Panel to Ground (Rear): 7.7 inches
Luggage Capacity: 6.5 Cubic Feet
Cowl Height: 36.7 inches
Windshield Slope Angle: 57.0°
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 x 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
Four Speed M20 Transmission: 1st Gear 2.64:1
2nd Gear 1.75:1
3rd Gear 1.33:1
4th Gear 1.00:1
Reverse Gear 2.55:1
Close Ratio Four Speed
M21 Transmission
(Not available with Standard Engine):
1st Gear 2.43:1
2nd Gear 1.61:1
3rd Gear 1.23:1
4th Gear 1.00:1
Reverse Gear 2.35:1
Transmission Lubricant Type: Military MIL-L-2105-B
SAE 80
Lubricant Capacity: Four Speed Manual: 3 Quarts
Differential Lubricant Type: Military MIL-L-2105-B
SAE 80
Differential Lubricant Capacity: 3.7 pints
Axle Ratio: 165 Horsepower Base Engine
3.08:1, 3.36:1
205 Horsepower L82 Engine
3.55:1, 3.70:1
Transmission Synchromesh: All Four Gears
Standard Fuel Tank Capacity: 18 Gallons
Steering Wheel Diameter: 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: 1,691 lb.
Rear: 1,851 lb.
Total: 3,542 lb.
(Shipping)   
Front: 1,713 lb.
Rear: 1,733 lb.
Total: 3,446 lb.
Model 19437 Sport Coupe: (Curb)   
Front: 1,690 lb.
Rear: 1,839 lb.
Total: 3,529 lb.
(Shipping)   
Front: 1,712 lb.
Rear: 1,721 lb.
Total: 3,433 lb.
Shipping Weight: Weight of basic vehicle with regular equipment, including grease, oil, engine coolant to capacity and (4) gallons of gasoline.
Curb Weight: Shipping weight plus gasoline to capacity.

Power to Weight Ratio
165 Horsepower Standard Engine:
3,733 lb.:
Pounds / Horsepower: 22.62
205 Horsepower L82 Engine:
3,746 lb.:
Pounds / Horsepower: 22.95

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)
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: +13 lb.
(+10 lb. Front; +3 lb. Rear)
Tilt / Telescopic Steering Wheel
(RPO N37):
+3 lb.
(+3 lb. Front; +0 lb. Rear)
Standard, L82 350 cubic inch Engines
With Turbo Hydra Matic Transmission:
+54 lb.
(+37 lb. Front; +17 lb. Rear)
Gymkhana Suspension: +2 lb.
(+2 lb. Front; +0 lb. Rear)
Power Steering: +26 lb.
(+25 lb. Front; +1 lb. Rear)
Radio, AM/FM Stereophonic
(RPO U58):
+18 lb.
Radio, AM/FM Pushbutton
(RPO U69):
+14 lb.


Engine Specs

Type: V8
Valve Location: In Head
Bore / Stroke: 4.00" / 3.48" (Standard, L82 350 Cubic Inch)
Displacement: Standard, L82 Engines: 350 Cubic Inches
Compression Ratio: 8.5:1 (Standard Engine)
9.0:1 (L82 Engine)
Crankshaft Material: Forged Steel
Camshaft Material: Cast Alloy Iron
Oil Pump Type: Gear
Normal Oil Pressure: 32 - 40 psi @ 2,000 RPM
Oil Pressure Gauge: Electrical
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, L82 Engines
19 Quarts (with heater)
Thermostat Type: Choke
Radiator Cap Relief Pressure: 15 PSI
Battery: (Standard, L82 Engines) 12 volt - 78 plate
3,250 Watts
(Heavy Duty, RPO UA1) 12 volt - 90 plate
4,000 Watts
Thermostat Opening: 192° - 198° F (Base Engine)
177° - 183° F (L82 Engine)

Brakes
Type: Caliper Disc, Four Wheel Hydraulic
Effective Area: 43.15 Square Inches
Swept Area: 249.14 Square Inches
Disc: Vented

Horsepower
Standard Engine (350 cubic inch): 165 hp @ 3,800 RPM;
Torque: 255 lb-ft @ 2,400 RPM
RPO L82 (350 cubic inch): 205 hp @ 4,800 RPM;
Torque: 255 lb-ft. @ 4,800 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 | 1112905 | Base Engine
Start: 0° @ 1,200 RPM
Intermediate: 12° @ 2,000 RPM
Maximum: 22° @ 4,200 RPM
Distributor | 1112883 | L82 Engine
Start: 0° @ 1,200 RPM
Intermediate: 13° @ 1,600 RPM
Maximum: 16° @ 2,000 RPM
Ignition Timing Vacuum Advance: Distributor | 1112905 | Base Engine
Start: 0° @ 6 inches Hg
Maximum: 14° @ 11.5 inches Hg
Distributor | 1112883 | L82 Engine
Start: 0° @ 0 inches Hg
Maximum: 14° @ 4 inches Hg
Timing: Base Engine: 6° BTDC @ 800 RPM (Manual)
6° BTDC @ 600 RPM (Automatic)
L82 Engine: 12° BTDC @ 900 RPM (Manual)
12° BTDC @ 700 RPM (Automatic)
Spark Plug: ACR44TX
Spark Plug Thread: 14 mm.
Spark Plug Torque: 25 lb.-ft.
Spark Plug Gap: .060 inch
Firing Order: 1-8-4-3-6-5-7-2
Idle: Standard Engine, Manual Transmission:
800 RPM (In Neutral)
Standard Engine, Automatic Transmission:
600 RPM (In Drive)
L82 Engine, Manual Transmission:
900 RPM (In Neutral)
L82 Engine, Automatic Transmission:
700 RPM (In Drive)

1975 Corvette Options

RPO: Description Production:    Price
Custom Interior Trim n/a $154.00
Optional Rear Axle Ratios 1,969 (5.12%) $12.00
A31 Power Windows 28,745 (74.73%) $93.00
A85 Custom Shoulder Belts (standard with coupe) 646 (1.68%) $41.00
C07 Auxiliary Hardtop (for convertible) 2,407 (6.26%) $267.00
C08 Vinyl Covered Auxiliary Hardtop (convertible) 279 (0.73%) $350.00
C50 Rear Window Defroster 13,760 (35.77%) $46.00
C60 Air Conditioning 31,914 (82.97%) $490.00
FE7 Gymkhana Suspension 3,194 (8.30%) $7.00
J50 Power Brakes 35,842 (93.18%) $50.00
L82 350 cu. in. 205hp Engine 2,372 (6.17%) $336.00
M21 4-Speed Manual Transmission, close ratio 1,057 (2.75%) n/a
M40 Turbo Hydra-Matic Automatic Transmission 28,473 (74.02%) n/a
N37 Tilt-Telescopic Steering Column 31,830 (82.75%) $82.00
N41 Power Steering 37,591 (97.73%) $129.00
QRM White Stripe Steel Belted Tires, GR70x15 5,233 (13.60%) $35.00
QRZ White Letter Steel Belted Tires, GR70x15 30,407 (79.05%) $48.00
U05 Dual Horns 22,011 (57.22%) $4.00
U58 AM-FM Radio, stereo 24,701 (64.22%) $284.00
U69 AM-FM Radio 12,902 (33.54%) $178.00
UA1 Heavy Duty Battery 16,778 (43.62%) $15.00
UF1 Map Light (on rearview mirror) 21,676 (56.35%) $5.00
YF5 California Emission Test 3,037 (7.90%) $20.00
Z07 Off Road Suspension and Brake Package 144 (0.37%) $400.00

Total Production: 38,465
Coupe: 33,836 (87.97%)
Convertible: 4,629 (12.03%)

Notes: Base Corvette Coupe with 350 cu. in. 165 hp engine and wide ratio four speed manual transmission: $6,810.10.
Base Corvette Convertible with 350 cu. in. 165 hp engine and wide ratio four speed manual transmission: $6,550.10.

Colors

Code Exterior Quantity Interior Soft Top Wheels
10 Classic White 8,007 (20.82%) Black / Dark Blue / Dark Red / Medium Saddle / Neutral / Silver Black / White Silver
13 Silver 4,710 (12.24%) Black / Dark Blue / Dark Red / Medium Saddle / Silver Black / White Silver
22 Bright Blue 2,869 (7.46%) Black / Dark Blue / Silver Black / White Silver
27 Steel Blue 1,268 (3.30%) Black / Dark Blue / Silver Black / White Silver
42 Bright Green 1,664 (4.33%) Black / Medium Saddle / Neutral / Silver Black / White Silver
56 Bright Yellow 2,883 (7.50%) Black / Medium Silver / Neutral Black / White Silver
67 Medium Saddle 3,403 (8.85%) Black / Medium Silver / Neutral Black / White Silver
70 Orange Flame 3,030 (7.88%) Black / Medium Silver / Neutral Black / White Silver
74 Dark Red 3,342 (8.69%) Black / Dark Red / Medium Saddle / Neutral / Silver Black / White Silver
76 Mille Miglia Red 3,355 (8.72%) Black / Dark Red / Medium Saddle / Neutral / Silver Black / White Silver

1975 Corvette