🏷️ Basic Information

Make:

Ferrari

Model:

308 Quattrovalvole / 328 GTB / 328 GTS

Product Name:

Ferrari 308 Quattrovalvole 328 GTB 328 GTS Workshop Manual

Product Description:

Ferrari 308 Quattrovalvole 328 GTB 328 GTS Workshop Manual

👋 Introduction

Positioning:

The Ferrari 308 Quattrovalvole and 328 models represented the pinnacle of accessible mid-engined V8 performance in their respective eras, targeting affluent enthusiasts seeking exhilarating driving experiences and iconic Italian design.

Competitors:

Competed with other European sports cars like the Porsche 911, Lotus Esprit, Lamborghini Jalpa, and contemporary offerings from Aston Martin.

Design:

Iconic Pininfarina styling, mid-engined V8 layout, gated shifter manual transmission, balanced chassis, exhilarating performance.

Performance Focus:

Designed for spirited driving and track capability, emphasizing driver engagement and a direct connection to the mechanicals.

📋 Manual Details

Covered Models:

Ferrari 308 Quattrovalvole (including 4-valve variants), Ferrari 328 GTB, Ferrari 328 GTS

Model Year Range:

Approximately 1982-1989 (covering the Quattrovalvole and 328 generations)

Estimated Page Count:

Highly variable depending on specific edition and print date, but typically extensive, likely exceeding 500 pages for comprehensive coverage.

Type:

Workshop Manual / Service Manual / Repair Manual

Language:

Likely English, with potential for Italian and other languages depending on the source and edition. Original factory manuals are often multilingual.

Format:

Typically printed book format. Digital versions (PDF) are also common for accessibility and searchability.

📖 Manual Coverage

Engine Mechanical:

Detailed procedures for engine disassembly, inspection, assembly, timing, valve adjustment (Quattrovalvole specific), cylinder head overhaul, piston and connecting rod installation, crankshaft and bearing service.

Engine Management Fuel:

Bosch K-Jetronic fuel injection system diagnosis and repair, fuel pump, pressure regulator, injectors, air flow meter, cold start system, emission controls, ignition system (coil, distributor, spark plugs, timing). Covers specific fuel injection variations for Quattrovalvole and 328 models.

Cooling System:

Radiator, fan operation, coolant types, thermostat, water pump, hoses, expansion tank, bleeding procedures.

Lubrication System:

Oil pump, oil cooler, oil filter, lubrication passages, oil specifications, dry sump system (if applicable to specific variants).

Transmission Drivetrain:

Manual gearbox (5-speed transaxle) disassembly, inspection, assembly, clutch replacement, differential service, driveshaft and CV joint maintenance.

Brakes:

Front and rear disc brake systems, caliper overhaul, pad replacement, rotor inspection, brake fluid specifications, bleeding procedures, parking brake system.

Suspension Steering:

Front and rear independent suspension, wishbones, ball joints, bushings, shock absorbers, springs, anti-roll bars, steering rack, power steering system diagnosis and repair.

Electrical System:

Wiring diagrams, component testing (starter, alternator, battery), lighting system, horn, wipers, dashboard instruments, fuse box and relay identification, power windows, air conditioning electrical components.

Bodywork Chassis:

Body panel removal and installation, door mechanisms, window regulators, convertible top mechanisms (GTS), interior trim, chassis lubrication points.

HVAC:

Air conditioning system diagnosis, refrigerant types, compressor, condenser, evaporator, blower motor, heating system components.

Scheduled Maintenance:

Detailed service schedules for oil changes, filter replacements, fluid checks and changes, belt replacements, spark plug replacement, ignition timing adjustments, valve clearance checks and adjustments.

Troubleshooting:

Diagnostic flowcharts and symptom-based troubleshooting guides for common mechanical, electrical, and fuel system issues.

Repair Rebuild:

Step-by-step instructions for major component repairs and full overhauls, including engine rebuilds and transmission overhauls.

Component Removal Installation:

Specific procedures for removing and installing all major and many minor components.

Diagnostics:

Guidance on using diagnostic tools and techniques specific to the era and systems employed.

Depth Level:

Comprehensive, covering everything from routine maintenance and minor repairs to complete engine and transmission rebuilds. Intended for professional mechanics and skilled enthusiasts.

Specifications Tolerances:

Includes critical torque specifications, bearing clearances, piston ring gaps, valve seat runout, and other essential technical data for accurate assembly.

Wiring Diagrams:

Detailed, high-quality wiring diagrams for all electrical systems, essential for diagnosing and repairing electrical faults.

📊 Manual Specifications

Format Details:

If digital, often provided as a high-resolution PDF. If printed, typically a professionally bound volume.

Quality:

Original factory manuals are printed on high-quality paper with clear diagrams and legible text. Reprints aim to match this quality.

Binding:

Professionally bound hardcover or softcover for printed versions. Digital formats are typically PDF.

Paper Quality:

Durable, semi-gloss paper is common for printed manuals to withstand shop use and clearly display technical illustrations.

⚙️ Engine Specifications

Engine Type:

Naturally aspirated V8, mid-mounted, longitudinal configuration.

Displacement:

308 QV: 2.9 liters (2926 cc). 328: 3.2 liters (3185 cc).

Valvetrain:

DOHC (Double Overhead Camshafts) per bank, 4 valves per cylinder (Quattrovalvole = four valves per cylinder).

Horsepower:

308 QV: Approximately 230-240 hp. 328: Approximately 270 hp.

Torque:

308 QV: Approximately 200-210 lb-ft. 328: Approximately 228-230 lb-ft.

Injection System:

Bosch K-Jetronic (CIS - Continuous Injection System).

Fuel Type:

Premium Unleaded Gasoline.

Engine Code 308Qv:

F106 G/B 040

Engine Code 328:

F105 CD 040

🔧 Transmission

Transmission Type:

5-speed manual transaxle (integrated gearbox and differential).

Optional Transmission:

Not available. Manual transmission was standard and a core part of the driving experience.

Shifter Type:

Iconic gated shifter, providing a tactile and precise shifting feel.

Gearbox Oil Type:

Refer to manual for specific API GL-4 or GL-5 gear oil specification, typically a multi-viscosity synthetic gear oil (e.g., 75W-90 or 80W-90).

📐 Dimensions

Body Styles:

GTB (Gran Turismo Berlinetta - Coupe), GTS (Gran Turismo Spyder - Targa Top)

Wheelbase:

Approximately 91.7 inches (2329 mm)

Length:

Approximately 168.5 inches (4280 mm)

Width:

Approximately 68.1 inches (1730 mm)

Height:

Approximately 43.5 inches (1105 mm)

Curb Weight:

Approximately 3,000-3,200 lbs (1360-1450 kg)

🛡️ Safety Features

Crash Testing:

Vehicles of this era predate modern standardized crash testing protocols. Structural integrity and passive safety features are basic by today's standards.

Braking System:

Four-wheel disc brakes (ventilated front and rear on most models) with hydraulic actuation. ABS was not typically standard on these models.

Seatbelts:

Three-point retractable seatbelts.

Chassis Structure:

Steel monocoque chassis with integrated roll-over protection for GTS models.

💡 Technology Features

Infotainment System:

Basic by modern standards. Typically featured a period-correct analogue radio/cassette player. No advanced displays or navigation.

Driver Assistance Features:

Limited. ABS was optional on some later 328 models, but advanced driver aids were non-existent.

Connectivity Options:

None. Connectivity was limited to the basic audio system.

🔧 Maintenance

Oil Change Interval:

Typically every 3,000-5,000 miles or annually, whichever comes first. Consult the manual for exact recommendations based on usage.

Timing Belt Replacement:

Critical maintenance item. Typically recommended every 2-3 years or 20,000-30,000 miles due to the interference engine design. Failure can cause catastrophic engine damage.

Valve Adjustment:

Essential for optimal performance and longevity, especially for Quattrovalvole models. Intervals vary but typically every 10,000-20,000 miles.

Engine Oil Type:

High-quality synthetic multi-grade oil, typically 10W-40 or 20W-50, meeting Ferrari's specifications (e.g., API SG or higher). Consult the manual for precise recommendations.

Coolant Type:

Ethylene glycol-based antifreeze/coolant mixture (e.g., 50/50 mix with distilled water).

Brake Fluid Type:

DOT 3 or DOT 4 high-temperature brake fluid.

Differential Oil Type:

GL-5 gear oil, typically 75W-90 or 80W-90.

Fuel System Degradation:

Aging fuel lines, O-rings, and diaphragms in K-Jetronic system can lead to leaks or poor fuel mixture. Carburetor models (early 308) can suffer from gumming and float bowl issues.

Cooling System Leaks:

Older rubber hoses and seals are prone to cracking and leakage, especially in the complex cooling system of V8 Ferraris.

Electrical Gremlins:

Aging wiring insulation, corroded connectors, and failing relays are common issues that can lead to intermittent faults or system failures.

Suspension Bushings:

Rubber suspension bushings degrade over time, affecting handling and ride quality. Replacement with modern poly-urethane or high-quality rubber is often recommended.

Clutch Wear:

As with any performance car, clutch wear is dependent on driving style, but replacement is a significant mechanical task.

Exhaust System Corrosion:

Especially in humid climates, exhaust components can suffer from rust and corrosion, requiring replacement.

Timing Belt Kit Example:

Specific part numbers vary by manufacturer (e.g., Gates, Continental) and are crucial to obtain from the manual or a reputable Ferrari parts supplier.

Oil Filter Example:

Commonly used filters include Mann W940/16, Fram PH16 or equivalent; however, always verify with the manual.

📚 Vehicle History

Heritage:

Ferrari's legacy is built on racing success and exotic road cars. The 308/328 lineage continued this tradition of V8-powered sports cars, building on the success of the earlier 208/308 GT4 and Dino 246.

Evolution From 308:

The 328 was a significant evolution of the 308 platform, receiving a larger displacement engine, updated styling cues (smoother bumpers, grille design), revised interior, and improved drivability.

Quattrovalvole Enhancement:

The 'Quattrovalvole' (QV) designation signified the adoption of 4 valves per cylinder, a key performance enhancement over earlier 2-valve 308 models.

Production Period 308Qv:

Approximately 1982-1985.

Production Period 328:

Approximately 1985-1989.

Manufacturing Location:

Maranello, Italy.

🏆 Awards & Recognition

Automotive Critics:

Consistently praised for its stunning looks, thrilling V8 soundtrack, and engaging driving dynamics. While not as dynamically sharp as some rivals, its charm and iconic status were undeniable.

Club Ratings:

Highly regarded by Ferrari Owners Clubs and classic car enthusiasts for their collectibility and classic supercar appeal.