🏷️ Basic Information

Make:

Ferrari

Model:

365 GT4 2+2

Year:

1973

Body Style:

2+2 Coupe

👋 Introduction

Market Position:

The Ferrari 365 GT4 2+2 represented Ferrari's foray into a more practical, grand touring coupe for discerning clientele who desired performance with usability. It was a luxurious, high-performance vehicle in its era.

Competitive Analysis:

Competed against other elite grand tourers of the period, such as Aston Martin V8 models, Lamborghini Espada, and other high-end European GT cars, offering a blend of Italian styling, V12 performance, and a more accommodating interior than its sportier siblings.

Key Features:

Iconic Ferrari V12 engine, Pininfarina styling, comfortable 2+2 seating, advanced chassis and suspension for its time, luxurious appointments.

Manual Purpose:

To empower owners and mechanics with the precise knowledge from Ferrari to correctly maintain, diagnose, and repair the 365 GT4 2+2.

📋 Manual Details

Coverage Areas:

Complete factory service and repair for the Ferrari 365 GT4 2+2 (1973 model year).

Page Count:

Hundreds of pages (specific count not provided, but described as 'complete').

Manual Type:

Factory Service Repair Manual

Manual Type Description:

This is an official factory-produced manual, ensuring the highest level of accuracy and completeness compared to third-party publications.

Language:

English

Format:

Downloadable PDF

📖 Manual Coverage

Systems Covered:

General Information, Maintenance, Chassis, Fuel System, Cooling System, Engine, Clutch, Engine Lubrication System, Engine Removal/Installation, Drive System, Transmission, Wheels/Tires, Final Drive, Brakes, Suspension, Steering, Frame, Electrical System, Wiring Diagrams, and more.

Steering System:

Hydraulic power steering system (details on pump, steering rack, and troubleshooting).

Wheel Tire Specifications:

Covers wheel types, bolt patterns (typically 5x108mm), and tire size recommendations (e.g., 205-15 or similar bias-ply or radial tires).

Fuel System Details:

Covers fuel tank, fuel lines, fuel pump, fuel filters, and the complex Weber carburetor setup, including jetting and tuning.

Body And Frame:

Includes procedures for body panel alignment, repair, and maintenance of the steel chassis and body shell.

Procedures Included:

Diagnosis of engine fault symptoms, evaluation of repair approaches, testing of suspected parts, tracing and verifying wiring diagrams, understanding engine management systems, common fixes, mechanic interaction guidance, pre-emptive maintenance tips, detailed repair procedures, advanced troubleshooting.

Engine Rebuild:

Comprehensive instructions for engine disassembly, inspection, overhaul, and reassembly, including torque specifications and clearances.

Transmission Overhaul:

Detailed steps for transmission removal, disassembly, repair, and reassembly, including gear synchro inspection and bearing replacement.

Brake System Overhaul:

Instructions for brake caliper rebuilding, disc/pad replacement, hydraulic system bleeding, and parking brake adjustments.

Diagnosis Engine Faults:

Provides systematic approaches to diagnosing common engine problems like misfires, rough running, and poor performance.

Electrical System Diagnosis:

Detailed troubleshooting for the electrical system, including starting, charging, lighting, and auxiliary circuits, with reference to wiring diagrams.

Technical Depth:

Comprehensive and detailed, covering everything needed to repair, maintain, rebuild, refurbish, or restore the vehicle. Includes information used by factory-trained technicians and professional mechanics.

Wiring Diagrams:

Includes detailed, full-vehicle wiring diagrams that are essential for diagnosing and repairing electrical faults.

Troubleshooting Guide:

Advanced troubleshooting guide with symptom-based diagnostics to help identify and rectify a wide range of mechanical and electrical issues.

📊 Manual Specifications

File Format:

PDF

Print Quality:

High resolution, fully printable (individual pages, chapters, or entire manual).

Binding Type:

Not applicable (downloadable PDF).

Paper Type:

Not applicable (digital format).

⚙️ Engine Specifications

Primary Engine:

Ferrari Tipo 243 V12

Engine Displacement:

4.4 Liters (4390 cc)

Engine Configuration:

45° V12, naturally aspirated

Performance Horsepower:

Approximately 320 bhp (SAE Gross) at 6,600 rpm.

Performance Torque:

Approximately 285 lb-ft (SAE Gross) at 5,000 rpm.

Fuel System:

Quad Weber 40 DFI or 40 DCNF carburetors.

Ignition System:

Distributor-based ignition system (specific details within manual).

Cooling System:

Water-cooled, pressurized system (manual covers detailed maintenance and repair).

Engine Management:

Mechanical fuel and ignition control via carburetors and distributors. Manual provides guidance on tuning and synchronization.

Engine Bore Stroke:

Bore: 81 mm, Stroke: 71 mm (specifications detailed in manual).

🔧 Transmission

Standard:

5-speed Manual Transaxle

Optional:

None specified for this model year.

Clutch:

Hydraulically actuated single-plate dry clutch (manual covers inspection and replacement).

Transaxle Layout:

Rear-mounted transaxle combining transmission and differential.

Gear Ratios:

Specific gear ratios for each of the 5 speeds and final drive ratio are provided in the manual for performance calculations and diagnostics.

📐 Dimensions

Exterior Length:

Approximately 4,720 mm (185.8 inches)

Exterior Width:

Approximately 1,770 mm (69.7 inches)

Exterior Height:

Approximately 1,120 mm (44.1 inches)

Wheelbase:

Approximately 2,700 mm (106.3 inches)

Weights Curb:

Approximately 1,550 kg (3,417 lbs)

Interior Seating:

2+2 seating configuration.

Fuel Tank Capacity:

Approximately 100 liters (26.4 US gallons) (refer to manual for precise capacity).

🛡️ Safety Features

Ratings:

No formal crash safety ratings available for vehicles of this era and class.

Active Features:

Four-wheel disc brakes (Girling servo-assisted). High-performance tire fitment.

Passive Features:

Lap belts for front occupants. Robust chassis construction for the period.

💡 Technology Features

Infotainment:

Primarily analog instrumentation. Likely equipped with an AM/FM radio, with cassette tape players becoming available later in the production cycle. Manual covers dashboard disassembly and electrical component access.

Driver Assistance:

No electronic driver assistance systems common in modern vehicles.

Connectivity:

No advanced connectivity features.

Electrical System:

12-volt negative ground electrical system. Manual includes comprehensive wiring diagrams for all vehicle circuits.

🔧 Maintenance

Service Intervals:

Detailed service intervals for all major components and systems are provided within the manual, covering routine checks, fluid changes, and major overhauls.

Fluid Specifications:

The manual specifies all required fluids including engine oil type and viscosity (likely SAE 20W-50 or similar for the era), coolant mixture, transmission fluid type (e.g., GL-4 or GL-5 gear oil), brake fluid specification (DOT 3 or DOT 4), and differential fluid.

Known Issues:

Common issues for vehicles of this vintage and marque often include carburetion tuning, ignition system maintenance, cooling system leaks, wear in suspension bushings, and potential corrosion. The manual addresses diagnostics and repair for these and other potential problems.

Engine Oil Capacity:

Approximately 12-14 liters (refer to manual for exact capacity and oil filter part number).

Coolant Capacity:

Approximately 18-20 liters (refer to manual for exact capacity and mixture ratios).

Tire Pressure:

Recommended tire pressures for front and rear are detailed in the manual, typically around 30-32 PSI for typical usage.

Spark Plug Type:

Specific spark plug models (e.g., Champion N9Y or equivalent) and gap settings are detailed in the manual.

Chassis Lubrication:

Covers greasing points and lubrication intervals for suspension components, steering linkage, and other chassis pivot points.

Valve Adjustment:

Detailed procedures and specifications for valve lash adjustment, a critical maintenance task for V12 engines of this era.

📚 Vehicle History

Brand Heritage:

Ferrari has a rich history of producing high-performance sports cars and grand tourers, renowned for their racing pedigree and exquisite engineering.

Model Evolution:

The 365 GT4 2+2 evolved from the 365 GT 2+2 and laid the groundwork for subsequent V12 front-engined Ferrari grand tourers like the 400i and 412.

Production:

The 365 GT4 2+2 was produced from 1972 to 1976. The 1973 model is part of the initial production run.

Manufacturing Location:

Maranello, Italy

Model Designation Meaning:

365 refers to the approximate displacement of one cylinder (365cc), GT denotes Gran Turismo, and 2+2 indicates the seating configuration.

🏆 Awards & Recognition

Recognitions:

While specific awards for the 1973 model year are not readily documented, the 365 GT4 2+2 is recognized as a significant model in Ferrari's history for its design and performance, often featured in automotive publications and classic car collections.