🏷️ Basic Information

Make:

Ferrari

Model:

308 GT4

Engine Codes:

F106 AB (US/Japan), F106 BB (Europe)

Chassis Codes:

308 GT4, 308 GT4 DLa, 308 GT4 Special

👋 Introduction

Market Position:

The Ferrari 308 GT4 was a significant departure for Ferrari, being their first V8-powered car and a more practical, albeit still exotic, four-seater coupe. This manual serves enthusiasts and owners looking to maintain and repair this unique piece of Ferrari history.

Competitive Analysis:

Competed against other mid-engined sports cars and GTs of its era, but its 2+2 seating and Bertone styling set it apart, often appealing to a slightly different buyer than its V12 siblings.

Key Features:

Mid-engined V8 powertrain, four-wheel independent suspension, distinctive wedge-shaped styling by Bertone, and a usable cabin for four occupants.

📋 Manual Details

Coverage Areas:

All Models/Engines/Trim/Transmissions Types

Page Count:

Not explicitly stated, but described as 'COMPLETE official full factory service repair manual'

Manual Type:

Factory Service Repair Manual / Workshop Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Systems Covered:

General information, Periodic maintenance, Engine, Fuel system and throttle body, Cooling and lubrication system, Chassis, Electrical system, Servicing information, Emission control information, Wiring diagram

Cooling System:

Detailed diagnostics and repair for the engine cooling system, including radiators, fans, thermostats, hoses, and coolant flow.

Lubrication System:

In-depth information on the engine oiling system, including oil pump, filter, oil cooler, and lubrication passages, critical for the high-performance V8.

Fuel System:

Comprehensive coverage of both carbureted (Weber) and fuel-injected (Bosch K-Jetronic) fuel systems, including fuel pumps, filters, lines, and injectors/carburetors.

Electrical System:

Extensive details on the vehicle's electrical architecture, including battery, charging system, ignition, lighting, instrumentation, and auxiliary components, supported by detailed wiring diagrams.

Chassis:

Covers all aspects of the chassis, including frame structure, suspension components (front and rear), steering system, and wheel alignment procedures.

Procedures Included:

Step-by-step instructions for complete disassembly, repair, maintenance, and troubleshooting

Engine Rebuild:

Detailed procedures for complete engine disassembly, component inspection, measurement, and reassembly, including valve timing and compression checks.

Transmission Overhaul:

Step-by-step guides for the removal, disassembly, inspection, repair, and reassembly of the 5-speed manual transaxle.

Brake System Repair:

Instructions for brake pad replacement, caliper service, rotor inspection and replacement, brake line maintenance, and bleeding the brake system.

Electrical Troubleshooting:

Methodical troubleshooting steps for common electrical faults, guided by the included wiring diagrams.

Suspension Alignment:

Specifics on wheel alignment parameters, caster, camber, and toe settings, essential for proper handling.

Technical Depth:

Comprehensive, suitable for do-it-yourselfers and experienced mechanics, covering all details of the machine

Diagnostic Procedures:

Includes diagnostic flowcharts and symptom-based troubleshooting to identify and resolve issues effectively.

Component Specifications:

Provides critical torque values, clearances, tolerances, and specifications for most components.

Special Tools:

While not always explicitly listed, the detailed procedures imply the use of specific Ferrari or equivalent specialized tools for certain tasks.

📊 Manual Specifications

File Format:

PDF

Searchability:

PDF format typically allows for keyword searching, significantly speeding up information retrieval.

Print Quality:

Printable without restriction

Diagram Quality:

Described as 'top quality diagrams and instructions,' crucial for understanding complex mechanical and electrical systems.

Binding Type:

Digital Download

Paper Type:

N/A (Digital)

⚙️ Engine Specifications

Primary Engine:

3.0L (2927 cc) DOHC V8

Horsepower:

Approx. 240-255 hp (depending on market and emission controls)

Torque:

Approx. 200-215 lb-ft

Fuel System:

Carbureted (Weber 40 DCNF for European models), Fuel Injection (Bosch K-Jetronic for US/Japan models)

Engine Layout:

Mid-mounted, 90-degree V8

Bore X Stroke:

81.0 mm x 71.0 mm

Compression Ratio:

8.8:1 (approx)

Valvetrain:

DOHC, 4 valves per cylinder

🔧 Transmission

Transmission:

5-speed manual transaxle

Transmission:

None offered

Features:

Integrated clutch and differential, transaxle layout optimizing weight distribution.

📐 Dimensions

Wheelbase:

95.3 inches (2420 mm)

Overall Length:

167.7 inches (4260 mm)

Overall Width:

70.1 inches (1780 mm)

Overall Height:

43.7 inches (1110 mm)

Curb Weight:

Approx. 3100-3300 lbs (1400-1500 kg)

🛡️ Safety Features

Safety Ratings:

Not subject to modern crash testing standards. Safety features focused on driver control and robust construction for the era.

Active Features:

Four-wheel disc brakes (ventilated front), independent suspension, rack-and-pinion steering.

Passive Features:

Steel monocoque chassis, three-point seat belts, energy-absorbing steering column.

💡 Technology Features

Infotainment:

Basic for its era, typically including a period-correct AM/FM radio. No advanced digital systems or touchscreens.

Driver Assistance:

Limited to standard automotive safety features of the 1970s, such as power steering and power-assisted brakes.

🔧 Maintenance

Service Intervals:

Detailed in the manual, typically involving annual or mileage-based checks for fluid changes, filter replacements, tune-ups, and brake inspections. Engine oil and filter changes often recommended every 5,000-7,500 miles or annually. Timing belt replacement is a critical interval, typically every 30,000 miles or 5 years.

Engine Oil:

Refer to manual for specific viscosity (e.g., SAE 20W-50, SAE 10W-40 depending on climate and oil type). Ferrari historically recommended high-quality mineral or semi-synthetic oils.

Coolant:

Ethylene glycol-based antifreeze with corrosion inhibitors, mixed with distilled water (typically 50/50). Refer to manual for specific type and capacity.

Transmission Fluid:

Gear oil for the manual transaxle. Refer to manual for specific API classification and viscosity (e.g., SAE 75W-90 or 80W-90).

Brake Fluid:

DOT 3 or DOT 4 brake fluid. Refer to manual for specific recommendation and capacity.

Clutch Fluid:

Typically the same as brake fluid (DOT 3 or DOT 4). Refer to manual.

Known Issues:

Rust in sills and floor pans, carburetor tuning difficulties (Weber), fuel system leaks, timing belt tensioner issues, wear on suspension bushings, electrical gremlins, and potential clutch wear. The manual addresses troubleshooting and repair for these common concerns.

Spark Plugs:

Refer to manual for specific plug type and gap (e.g., Champion N14Y, NGK BPR6ES/BPR7ES).

Oil Filter Part Numbers:

Examples include Fram PH8A, Wix 51515, Mann W930/1. Always verify with manual or parts catalog.

📚 Vehicle History

Brand Heritage:

Ferrari, founded by Enzo Ferrari, is renowned for its racing heritage and iconic sports cars, symbolizing performance, luxury, and Italian automotive passion.

Model Evolution:

The 308 GT4 (initially marketed as the Dino 308 GT4) was a significant evolution, introducing the V8 engine to a production Ferrari and featuring a practical 2+2 configuration designed by Bertone, diverging from Pininfarina's usual Ferrari commissions.

Production Years:

1973-1980

Production Numbers:

Approximately 2,800 units

Manufacturing Locations:

Maranello, Italy

🏆 Awards & Recognition

Recognitions:

While not awarded specific "Car of the Year" titles, the 308 GT4 is recognized as a landmark model for Ferrari for its pioneering V8 and 2+2 practicality, and its Bertone design is considered a classic.