🏷️ Basic Information Identification Make: Ferrari Model: 365 GT4 2+2 Model Variant: GT4 2+2 Year: 1973 Codes Chassis Code: 18000 series (early examples) 👋 Introduction Market Position Market Position: The Ferrari 365 GT4 2+2 was positioned as a luxurious, high-performance grand tourer, competing with other elite European GTs of its era. It represented a significant evolution in Ferrari's V12 lineup, offering increased comfort and practicality without compromising on driving dynamics. Competitive Analysis Competitors: Lamborghini Espada, Aston Martin V8, Maserati Ghibli SS, Jaguar E-Type Series 3. Key Features Key Features: Iconic V12 engine, sophisticated Pininfarina styling, spacious 2+2 seating, advanced independent suspension, luxurious interior appointments, and exceptional performance for its class. 📋 Manual Details Coverage Areas Systems Covered: Engine, Fuel System, Cooling System, Ignition System, Lubrication System, Clutch, Transmission, Differential, Driveshafts, Suspension (Front & Rear), Steering System, Braking System (Hydraulic & Parking), Electrical System, Bodywork, Chassis, Interior, Heating & Ventilation. Procedures Included: Routine Maintenance, Inspections, Adjustments, Troubleshooting, Component Removal & Installation, Engine Rebuilding, Transmission Servicing, Chassis Repair, Electrical Diagnosis, Carburetor Tuning, Brake Bleeding, Wheel Alignment, Body Panel Alignment. Page Count Page Count: Approximately 350-400 pages (estimated for comprehensive service manuals of this era). Manual Type Manual Type: Service & Repair Manual Language Language: English Format Format: Digital (PDF) Digital Enhancements: Hyperlinked index for quick navigation, searchable text for keyword-based searches. 📖 Manual Coverage Systems Covered Engine Specifics: Detailed coverage of the Ferrari Colombo V12 engine, including disassembly, assembly, valve timing, bearing clearances, piston ring installation, cylinder head torque sequences, and cooling system intricacies. Transmission Specifics: Comprehensive information on the 5-speed manual transaxle, including gear selection mechanisms, clutch operation, lubrication requirements, and rebuild procedures. Electrical System Coverage: Wiring diagrams for all circuits, fuse box layout, ignition system troubleshooting (including distributor settings), lighting systems, instrumentation, and charging system diagnosis. Suspension Details: Independent front and rear suspension with unequal-length wishbones, coil springs, hydraulic shock absorbers, and anti-roll bars. Detailed adjustment procedures for ride height and alignment. Braking System Details: Girling hydraulic disc brakes on all four wheels with dual-circuit system. Separate hydraulic circuit for parking brake acting on rear discs. Includes bleeding procedures and component replacement. Procedures Included Diagnostic Procedures: Systematic troubleshooting guides for common performance issues, drivability problems, and electrical faults, utilizing diagnostic charts and symptom-based troubleshooting. Rebuilding Procedures: Step-by-step instructions for the complete overhaul of major components like the engine, transmission, carburetors, and brake system, with clear illustrations and torque specifications. Bodywork Procedures: Panel alignment, door/hood/trunk adjustments, minor rust repair guidance, and trim component removal/installation. Technical Depth Technical Depth: Expert-level detail, suitable for professional mechanics and experienced enthusiasts aiming for concours-level restoration or performance tuning. Includes factory tolerances and specifications. Diagnostic Tools Required: Basic hand tools, feeler gauges, torque wrench, multimeter, timing light, vacuum gauge, and specialized carburetor synchronization tools. 📊 Manual Specifications File Format File Format: Searchable PDF with high-resolution scans of original factory documentation. Print Quality Print Quality: Crisp, clear text and detailed schematics/illustrations, optimized for printing individual pages or sections. Binding Type Binding Type: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Ferrari Colombo V12 Engine Displacement: 4.4 Liters (4390 cc) Bore X Stroke: 81 mm x 71 mm Compression Ratio: 9.2:1 (typical) Performance Horsepower: 320 bhp @ 6200 rpm Torque: 302 lb-ft (409 Nm) @ 4500 rpm Fuel System Carburetion: Four Weber 40 DCNF dual-choke carburetors Fuel Type: Premium Unleaded Gasoline Lubrication Oil Capacity: 11.5 Liters (12.1 US Quarts) Ignition Ignition System: Dual ignition with two distributors Engine Layout Engine Configuration: Front-mounted, 60-degree V12 Engine Features Cooling System: Water-cooled, radiator with fan and expansion tank. Valve Train: Dual Overhead Camshafts (DOHC) per bank, 2 valves per cylinder. 🔧 Transmission Standard Transmission Type: 5-Speed Manual Transaxle Optional Optional Transmission: 3-Speed Automatic (less common) Features Clutch Type: Hydraulically operated single dry-plate clutch Differential: Limited-Slip Differential Fluid Specs Transmission Fluid Type: API GL-5, SAE 90 (or equivalent specialized manual transmission fluid) 📐 Dimensions Exterior Wheelbase: 2700 mm (106.3 in) Length: 4660 mm (183.5 in) Width: 1770 mm (69.7 in) Height: 1170 mm (46.1 in) Weights Curb Weight: Approx. 1600 kg (3527 lbs) Wheels Tires Wheel Size: 14-inch or 15-inch (depending on market/options) Tire Size: 215/70 VR 14 (common fitment) Bolt Pattern: 5x108 mm 🛡️ Safety Features Ratings Crash Safety Ratings: Not tested under modern safety rating systems. Designed with safety standards of the early 1970s. Active Features Active Safety Features: Four-wheel disc brakes, limited-slip differential, power-assisted steering. Passive Features Passive Safety Features: Lap seat belts, reinforced chassis structure, impact-absorbing steering column. 💡 Technology Features Infotainment Infotainment System: Basic period-appropriate AM/FM radio, often with a single speaker. No integrated navigation or multimedia systems. Driver Assistance Driver Assistance Features: Power-assisted steering. No electronic driver assistance systems like ABS, traction control, or stability control were available. 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000...