🏷️ Basic Information

Make:

Ferrari

Model:

365 GT4 2+2

Model Variant:

GT4 2+2

Year:

1973

Chassis Code:

18000 series (early examples)

👋 Introduction

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.

Competitors:

Lamborghini Espada, Aston Martin V8, Maserati Ghibli SS, Jaguar E-Type Series 3.

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

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:

Approximately 350-400 pages (estimated for comprehensive service manuals of this era).

Manual Type:

Service & Repair Manual

Language:

English

Format:

Digital (PDF)

Digital Enhancements:

Hyperlinked index for quick navigation, searchable text for keyword-based searches.

📖 Manual Coverage

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.

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:

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:

Searchable PDF with high-resolution scans of original factory documentation.

Print Quality:

Crisp, clear text and detailed schematics/illustrations, optimized for printing individual pages or sections.

Binding Type:

N/A (Digital Format)

Paper Type:

N/A (Digital Format)

⚙️ Engine Specifications

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)

Horsepower:

320 bhp @ 6200 rpm

Torque:

302 lb-ft (409 Nm) @ 4500 rpm

Carburetion:

Four Weber 40 DCNF dual-choke carburetors

Fuel Type:

Premium Unleaded Gasoline

Oil Capacity:

11.5 Liters (12.1 US Quarts)

Ignition System:

Dual ignition with two distributors

Engine Configuration:

Front-mounted, 60-degree V12

Cooling System:

Water-cooled, radiator with fan and expansion tank.

Valve Train:

Dual Overhead Camshafts (DOHC) per bank, 2 valves per cylinder.

🔧 Transmission

Transmission Type:

5-Speed Manual Transaxle

Optional Transmission:

3-Speed Automatic (less common)

Clutch Type:

Hydraulically operated single dry-plate clutch

Differential:

Limited-Slip Differential

Transmission Fluid Type:

API GL-5, SAE 90 (or equivalent specialized manual transmission fluid)

📐 Dimensions

Wheelbase:

2700 mm (106.3 in)

Length:

4660 mm (183.5 in)

Width:

1770 mm (69.7 in)

Height:

1170 mm (46.1 in)

Curb Weight:

Approx. 1600 kg (3527 lbs)

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

Crash Safety Ratings:

Not tested under modern safety rating systems. Designed with safety standards of the early 1970s.

Active Safety Features:

Four-wheel disc brakes, limited-slip differential, power-assisted steering.

Passive Safety Features:

Lap seat belts, reinforced chassis structure, impact-absorbing steering column.

💡 Technology Features

Infotainment System:

Basic period-appropriate AM/FM radio, often with a single speaker. No integrated navigation or multimedia systems.

Driver Assistance Features:

Power-assisted steering. No electronic driver assistance systems like ABS, traction control, or stability control were available.

🔧 Maintenance

Oil Change Interval:

Every 5,000 km (3,000 miles) or annually. Engine oil filter replacement at every oil change.

Tune Up Interval:

Every 10,000 km (6,000 miles) - includes spark plug replacement, ignition timing check, carburetor synchronization, and filter replacements.

Timing Belt Interval:

N/A (This model uses a timing chain system.)

Engine Oil Type:

SAE 20W-50 or SAE 15W-50 (API SF or SG rating recommended).

Coolant Type:

Ethylene glycol-based antifreeze with corrosion inhibitors, mixed 50/50 with distilled water.

Brake Fluid Type:

DOT 4 or DOT 5.1 hydraulic brake fluid.

Power Steering Fluid:

Dexron III ATF (Automatic Transmission Fluid) or equivalent power steering fluid.

Gearbox Fluid Capacity:

Approximately 3.5 Liters (3.7 US Quarts)

Coolant Capacity:

Approximately 15 Liters (15.8 US Quarts)

Common Issues:

Carburetor synchronization and tuning, ignition system reliability, aging rubber hoses and seals, cooling system performance, clutch wear, and potential rust in common areas (e.g., sills, wheel arches) due to age.

Preventative Maintenance:

Regular lubrication of suspension and steering components, periodic inspection of the exhaust system, and diligent attention to cooling system maintenance are crucial for longevity.

📚 Vehicle History

Brand Heritage:

Founded by Enzo Ferrari, Ferrari has a storied history in motorsport and high-performance road cars, consistently pushing the boundaries of engineering and design.

Predecessors:

Ferrari 365 GT 2+2, Ferrari 365 GTC/4.

Successors:

Ferrari 400 GT, Ferrari 400i, Ferrari 412.

Production Years:

1972-1976

Production Numbers:

Approximately 500 units.

Manufacturing Location:

Maranello, Italy

🏆 Awards & Recognition

Automotive Press Reviews:

Generally praised for its performance, handling, and luxurious GT capabilities by automotive press of its time. Not typically subject to formal awards like modern vehicles.

Collector Car Value:

Highly regarded by collectors, representing a significant piece of Ferrari V12 GT history. Values vary significantly based on condition and originality.

Heritage Status:

Considered a 'classic' or 'modern classic' Ferrari, often eligible for historic racing events and concours d'elegance.