More About the 1975 Corvette
1975 Corvette
Body Specs |
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| 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 |
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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) |
| 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 |
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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 |
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| 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. |
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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.
Curb Weight: Shipping weight plus gasoline to capacity. |
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165 Horsepower Standard Engine:
3,733 lb.: |
Pounds / Horsepower: 22.62 |
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205 Horsepower L82 Engine:
3,746 lb.: |
Pounds / Horsepower: 22.95 |
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| 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) |
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Tilt / Telescopic Steering Wheel
(RPO N37): |
+3 lb.
(+3 lb. Front; +0 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) |
| Gymkhana Suspension: |
+2 lb.
(+2 lb. Front; +0 lb. Rear) |
| Power Steering: |
+26 lb.
(+25 lb. Front; +1 lb. Rear) |
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Radio, AM/FM Stereophonic
(RPO U58): |
+18 lb. |
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Radio, AM/FM Pushbutton
(RPO U69): |
+14 lb. |
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| 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) |
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Brakes |
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| Type: | Caliper Disc, Four Wheel Hydraulic |
| Effective Area: | 43.15 Square Inches |
| Swept Area: | 249.14 Square Inches |
| Disc: | Vented |
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Horsepower |
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| 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 |
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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 | 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 |
| Optional Rear Axle Ratios | 1,969 (5.12%) | $12.00 | |
| Custom Interior Trim | n/a | $154.00 | |
| 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 |
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Total Production:
38,465
Notes: Base Corvette Coupe with 350 cu. in. 165 hp engine and wide ratio four speed manual transmission: $6,810.10. |
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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 |