🏷️ Basic Information Identification Make: Chevrolet Model: Corvette Year: 1978 Engine Code: L48 (350ci/V8), L82 (350ci/V8) Trim Levels: Base, Pace Car Replica Transmission Types: 3-speed THM350 automatic, 4-speed M21 manual Codes Vin Code Engine: H for L48, J for L82 👋 Introduction Market Position Market Segment: High-performance American sports car, personal luxury coupe. Competitive Analysis Competitors 1978: Porsche 928, Jaguar XJ-S, Datsun 280Z, American V8 muscle cars (though shifting focus). Key Features Design Era: Second generation Corvette (C3), characterized by its 'Coke bottle' styling and long hood. Model Significance: 1978 marked the 25th anniversary of the Corvette, featuring unique badging and the introduction of the popular 'Pace Car' replica model. 📋 Manual Details Coverage Areas Covered Models: All 1978 Corvette Models, Engines, Trim Levels, Transmission Types Page Count Approximate Pages: 1000+ Manual Type Type: Workshop Repair Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Complete diagnosis, repair, overhaul, performance tuning, lubrication, cooling system, fuel system (carburetor), exhaust system. Transmission: Automatic (THM350) and manual (M21) transmission diagnosis, repair, overhaul, fluid service, clutch system (manual). Brakes: Front disc, rear disc brake system inspection, repair, hydraulic system, parking brake. Suspension Steering: Independent front suspension, rear independent suspension, steering system diagnosis and repair, power steering. Electrical: Complete electrical system wiring diagrams, charging system (alternator), starting system (starter), ignition system, lighting, instrumentation, power windows, radio. Chassis Body: Frame, body panel repair, doors, hood, T-tops, interior trim, upholstery, weatherstripping, bumpers. Procedures Included Maintenance: Oil changes, filter replacements, fluid checks and top-offs, tune-ups, spark plug replacement, belt inspection and replacement, brake fluid flush, coolant flush. Troubleshooting: Systematic diagnostic procedures for common and uncommon drivability issues, electrical faults, and mechanical problems with flowcharts and symptom-based guides. Repair: Step-by-step instructions for component removal, disassembly, inspection, repair, reassembly, and installation across all vehicle systems. Specifications: Torque specifications, clearances, fluid capacities, electrical tolerances, diagnostic parameters. Technical Depth Depth: Comprehensive coverage from basic preventative maintenance to full engine and transmission rebuilds, including detailed diagnostic procedures and wiring schematics. 📊 Manual Specifications File Format PDF Quality: High-resolution scans, searchable text where possible, clear images and diagrams. Print Quality Scalability: Printable pages, suitable for on-demand printing. Binding Type Binding: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Base Engine: 350 cubic inch (5.7L) V8, L48 variant Optional Engine: 350 cubic inch (5.7L) V8, L82 variant (higher performance) Performance L48 Horsepower: 185 hp @ 4400 rpm L48 Torque: 295 lb-ft @ 2400 rpm L82 Horsepower: 220 hp @ 5200 rpm L82 Torque: 260 lb-ft @ 3600 rpm Fuel System Carburetor L48: Quadrajet 4-barrel carburetor (M40) Carburetor L82: Quadrajet 4-barrel carburetor (M40) with higher flow Engine Construction Block Material: Cast Iron Head Material: Cast Iron Ignition System Ignition Type: Breakerless Electronic Ignition (HEI) 🔧 Transmission Standard Standard Transmission: THM350 3-speed automatic transmission Optional Optional Transmission: M21 4-speed manual transmission Features Automatic Features: Torque converter lock-up in high gear Fluid Specifications Automatic Transmission Fluid: Dexron III (or equivalent) Manual Transmission Fluid: GL-4 Gear Oil (SAE 75W-90 or 80W-90) 📐 Dimensions Exterior Length: 179.3 inches Width: 69.0 inches Height: 47.8 inches Wheelbase: 98.0 inches Weights Curb Weight Approx: 3300 - 3500 lbs (varies by option) Gross Vehicle Weight Rating: Approx. 4200 lbs Cargo Rear Storage Compartment: Located behind seats, ample for small luggage Front Storage: Small compartment under hood 🛡️ Safety Features Ratings NHTSA Ratings: Not available in modern standardized format for this era. Active Features Braking System: Power-assisted front and rear disc brakes. Steering System: Recirculating ball steering, power steering optional. Passive Features Seatbelts: Three-point retractable front seatbelts. Rollover Protection: No specific rollover protection structure as standard. Windshield: Laminated safety glass. 💡 Technology Features Infotainment Radio Options: AM/FM stereo, optional 8-track player or cassette player. Speakers: Typically dual front speakers, optional rear speakers. Driver Assistance Cruise Control: Optional. Air Conditioning: Optional, often dealer-installed or factory-ordered. Connectivity Connectivity Features: N/A (No modern digital connectivity features available). 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000 miles or 6 months, whichever comes first (with conventional oil). Transmission Fluid Change: Every 30,000 miles or 2 years for automatic, as needed for manual (check level). Coolant Flush: Every 2 years or 30,000 miles. Tune Up Interval: Recommended every 30,000 miles, including spark plugs, distributor cap, rotor, and points (if applicable). Fluid Specifications Engine Oil Capacity: 5 Quarts (with filter) of 10W-40 or 10W-30 API SE/CC rated oil (check manual for specific viscosity recommendations based on climate). Coolant Type: Ethylene glycol antifreeze (50/50 mix with distilled water). Brake Fluid Type: DOT 3. Known Issues Fiberglass Cracking: Stress cracks can appear around wheel wells and door openings due to fiberglass body flex. T Top Leaks: Weatherstripping around T-tops can degrade, leading to water leaks. Carburetor Issues: Quadrajet carburetors can be finicky and require regular tuning or rebuilding due to...