🏷️ Basic Information Identification Make: Chevrolet Model: Corvette Model Variant: 454 Covered Years: 1963-1983 Codes Engine Code Primary: LS4 (454 cu in) Chassis Code Generations: C2 (Sting Ray) 1963-1967, C3 (Stingray/Corvette) 1968-1982 👋 Introduction Market Position Iconic Status: The Corvette 454 represents a significant era for the marque, particularly known for its big-block V8 power and the shift from the classic C2 design to the radical C3. Competitive Analysis Era Competitors: Challenged European sports cars like Porsche 911 and Ferrari models in performance and prestige, while offering a distinct American muscle car flair. Key Features Performance Focus: This manual is crucial for owners and mechanics looking to maintain and repair the powerful 454 cubic inch V8 engines that defined performance for these Corvettes. Manual Value: Provides the essential technical knowledge to keep these classic American sports cars running optimally and to perform authentic restorations. 📋 Manual Details Coverage Areas Manual Scope: Comprehensive service, repair, and maintenance Page Count Estimated Pages: Extensive (exact count not specified, but typical for 20+ years of models) Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Powertrain: Engine, Transmission, Driveline, Fuel System, Cooling System, Exhaust System Chassis: Suspension (Front and Rear), Steering, Brakes, Wheels and Tires Electrical: Ignition, Charging System, Starting System, Lighting, Instrumentation, Power Accessories, Wiring Diagrams Body: Body Panels, Interior Trim, Doors, Windows, Seats, Convertible Top Mechanism (if applicable) Procedures Included Maintenance: Scheduled Maintenance, Oil Changes, Filter Replacements, Fluid Checks and Replacements Repair: Engine Overhaul, Transmission Rebuild, Brake System Repairs, Suspension Component Replacement, Electrical Component Diagnosis and Repair Troubleshooting: Diagnostic Procedures for Common Issues, Symptom-Based Troubleshooting Charts Technical Depth Depth: Detailed diagnostic procedures, component disassembly and reassembly, torque specifications, clearances, and adjustment procedures 📊 Manual Specifications File Format Format Details: Searchable PDF, Printable Print Quality Quality: High-resolution scans of original manuals, clear text and diagrams Binding Type Binding: N/A (Digital Download) Paper Type Paper Quality: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Name: 454 V8 (LS4) Displacement: 7.4 Liters (454 cubic inches) Bore X Stroke: 4.25 in x 4.00 in (108 mm x 101.6 mm) Compression Ratio: Variable by year, typically 8.5:1 to 7.3:1 during this period due to emissions regulations Performance Horsepower: Approx. 365-390 HP (gross, varies by year and specific configuration) Torque: Approx. 460-500 lb-ft (gross, varies by year and specific configuration) Fuel System Fuel Delivery: Carbureted (Quadrajet 4-barrel or Holley, depending on year and emissions tuning) Fuel Type: Unleaded gasoline (octane ratings varied) Ignition System Type: Points and Condenser (early years), Electronic Ignition (later years, e.g., HEI) 🔧 Transmission Standard Transmission Type: Muncie M20/M21 4-speed Manual, Turbo Hydra-Matic (THM) 400 3-speed Automatic Optional Optional Transmissions: Close-ratio M22 'Rock Crusher' manual (less common in 454 models compared to performance packages). Features Clutch Type: Single dry plate (manual transmission) Automatic Transmission Control: Vacuum modulator and governor (THM 400) 📐 Dimensions Exterior Wheelbase: 98 inches (2489 mm) Length: Approx. 183-190 inches (4650-4826 mm) depending on year and body style Width: Approx. 70.8 inches (1798 mm) Height: Approx. 47.5-48.9 inches (1207-1242 mm) depending on year and body style Weights Curb Weight: Approx. 3,200 - 3,600 lbs (1451 - 1633 kg) depending on options and year Gross Vehicle Weight Rating: Not typically specified for sports cars of this era, but engine weight is considerable. 🛡️ Safety Features Ratings Crash Test Data: No standardized NHTSA or IIHS ratings for vehicles of this vintage. Safety features focused on chassis integrity and basic driver protection. Active Features Braking System: Power-assisted disc brakes on all four wheels (standard on 454 models), vented front discs. Steering System: Power steering (standard on 454 models) Passive Features Seat Belts: Lap belts standard; shoulder belts became standard later in the covered period. Body Structure: Integral body-frame construction (Unibody concept but with a strong perimeter frame structure common to early Corvettes) 💡 Technology Features Infotainment Audio Systems: AM/FM Radio, AM/FM/8-Track players, Cassette players (later years). Many have been upgraded to modern head units. Driver Assistance Features: Very limited. Primarily focused on the driving experience rather than electronic aids. Connectivity Features: None by modern standards. Primarily mechanical and analog systems. 🔧 Maintenance Service Intervals Oil Change Interval: Historically, every 3,000 miles or 3 months, though vintage vehicles may require more frequent checks. Transmission Fluid Change: Automatic: Every 24,000-30,000 miles. Manual: Inspect annually, change as needed or every 50,000 miles. Fluid Specifications Engine Oil: SAE 10W-30 or 10W-40 (conventional oil recommended for flat-tappet camshafts if original engine is intact, consult manual for specific year). Coolant: 50/50 mixture of ethylene glycol antifreeze and distilled water. Capacity approx. 5 gallons. Brake Fluid: DOT 3 or DOT 4. Transmission Fluid Auto: Dexron-III (or equivalent DEXRON®-VI) for THM 400. Transmission Fluid Manual: GL-4 gear oil for Muncie transmissions (viscosity varies, typically 80W-90). Known Issues Engine Wear: Valve guide...