The Ginetta G55 GT4 3.7 V6, introduced in 2011, represents a focused, high-performance iteration of the G55 model line. Ginetta, a British manufacturer with a long history in motorsport and kit cars, positioned the G55 GT4 as a dedicated track-day and racing machine, bridging the gap between pure road cars and full-fledged GT race cars. This variant, powered by a naturally aspirated 3.7-liter V6 engine producing 380 horsepower, was a key component of Ginetta’s strategy to offer accessible, yet potent, competition vehicles. The G55 platform itself was a significant departure for Ginetta, moving towards a more sophisticated and fully-integrated vehicle construction compared to their earlier kit-based offerings.
Technical Specifications
| Brand | Ginetta |
| Model | G55 |
| Generation | G55 GT4 |
| Type (Engine) | 3.7 V6 (380 Hp) |
| Start of production | 2011 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 2 |
| Doors | 2 |
| Fuel Type | Petrol (Gasoline) |
| Maximum speed | 241 km/h (149.75 mph) |
| Weight-to-power ratio | 2.9 kg/Hp, 350.2 Hp/tonne |
| Power | 380 Hp |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Engine oil capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Kerb Weight | 1085 kg (2392.02 lbs.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 6 gears, manual transmission |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Wheel rims size | 9J x 18; 10J x 18 |
Powertrain & Engine Architecture
The heart of the G55 GT4 3.7 V6 is a naturally aspirated 3.7-liter V6 engine. While Ginetta did not manufacture the engine in-house, it sourced a robust and well-regarded unit, often based on a Ford Duratec architecture, extensively modified for performance. The engine utilizes multi-port fuel injection, a relatively conventional system for this class of vehicle, prioritizing responsiveness and a linear power delivery over the more complex direct injection systems. The V6 configuration provides a good balance of power, smoothness, and packaging. The engine’s 380 horsepower output is achieved through a combination of increased displacement, optimized cylinder head design, and a high-performance exhaust system. The engine is mated to a six-speed manual transmission, chosen for its driver engagement and suitability for track use. The transmission features close ratios designed to keep the engine within its optimal power band during cornering and acceleration.
Driving Characteristics
The G55 GT4 3.7 V6 delivers a raw and engaging driving experience. The naturally aspirated engine requires the driver to actively manage the power delivery, rewarding skillful gear changes and throttle control. The relatively light weight of 1085 kg (2392 lbs) contributes to a high power-to-weight ratio, resulting in brisk acceleration and responsive handling. The manual transmission further enhances the connection between driver and machine. Compared to potential future turbocharged variants, the 3.7 V6 offers a more predictable and linear power curve, making it accessible to a wider range of driver skill levels. The rear-wheel-drive configuration provides a classic sports car feel, with a tendency towards oversteer that can be exploited by experienced drivers. However, the car is also equipped with ABS, providing a safety net for less experienced drivers.
Equipment & Trim Levels
The Ginetta G55 GT4 3.7 V6 was not offered with extensive trim levels in the traditional sense. It was primarily sold as a focused performance package, with the emphasis on track readiness. Standard equipment included a racing-style interior with lightweight bucket seats, a roll cage for enhanced safety, and a comprehensive data logging system to aid in performance analysis. Creature comforts were minimal, reflecting the car’s intended purpose. Optional extras typically included upgraded suspension components, racing slicks, and more sophisticated data acquisition systems. Interior trim was generally spartan, with a focus on functionality over luxury. The dashboard layout was designed to provide clear and concise information to the driver, with essential gauges and warning lights prominently displayed.
Chassis & Braking
The G55 GT4 features a lightweight, tubular steel spaceframe chassis, providing a rigid and strong foundation for the vehicle. The suspension utilizes fully adjustable coilover dampers, allowing for precise tuning to suit different track conditions and driver preferences. Ventilated disc brakes are fitted to all four wheels, providing ample stopping power. The braking system is assisted by ABS, enhancing stability under hard braking. The car’s relatively low weight and balanced chassis contribute to its nimble handling characteristics. Wheel rims are typically 9J x 18 at the front and 10J x 18 at the rear, accommodating high-performance tires for maximum grip.
Market Reception & Comparison
The Ginetta G55 GT4 3.7 V6 was generally well-received by automotive enthusiasts and motorsport competitors. Critics praised its engaging driving experience, potent performance, and relatively accessible price point compared to other GT4-class race cars. The naturally aspirated engine was lauded for its responsiveness and linear power delivery. However, some reviewers noted the lack of creature comforts and the spartan interior. Compared to potential rivals like the Porsche Cayman GT4 or Lotus Evora, the Ginetta offered a more raw and focused experience, prioritizing performance over refinement. Its price point also made it an attractive option for amateur racers and track-day enthusiasts.
Legacy
The Ginetta G55 GT4 3.7 V6 has established itself as a capable and competitive track-day and racing machine. The powertrain, while not the most technologically advanced, has proven to be reliable and durable in motorsport applications. On the used car market, well-maintained examples of the G55 GT4 3.7 V6 are sought after by enthusiasts looking for an affordable and engaging track car. The car’s relatively simple construction and readily available parts make it easier to maintain and repair compared to more complex rivals. The G55 GT4 represents a significant step forward for Ginetta, demonstrating their ability to produce a sophisticated and competitive sports car that can hold its own on the track.
