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1975 Chevrolet Corvette Convertible
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1975 Corvette Specs

Body Specs

Wheelbase 98.0 inches
Overhand (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


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