Michelotto's GR4 Tributo revives the Ferrari 308 with a 375 HP two-valve V8, 950 kg weight, and fewer than 50 units.
Michelotto GR4 Revives Ferrari 308 With Pure Two-Valve V8 official exterior hero view
Key Takeaways:
• A limited-run Michelotto GR4 revives the Ferrari 308 GTB rally spirit without a single Prancing Horse badge.
• A naturally aspirated 3.4-liter V8 makes 375 horsepower through just two valves per cylinder.
• Fewer than 50 units will be built, starting above 450,000 euros, roughly $503,000.

Michelotto has taken the Ferrari 308 GTB’s rally heritage and built something far more ferocious. The Michelotto GR4 Tributo celebrates the 50th anniversary of the 308’s FIA Group 4 homologation, and it skips the Prancing Horse entirely. What it offers instead is a naturally aspirated V8, a 950-kilogram curb weight, and a manual gearbox built for gravel.

Why the Michelotto GR4 Matters

Modern engineers chase four valves per cylinder, but this V8 sticks with two. Reportedly, that choice delivers stronger low-end torque on gravel, sand, and snow than a 32-valve layout could manage. Mounted just behind the driver’s head, the 3.4-liter unit peaks at 8,250 rpm and makes 375 horsepower alongside 268 lb-ft of torque. It rewards a patient right foot, much like the Ferrari F40 demands respect through every throttle lift.

Chassis composure matters more than peak output, and the Michelotto GR4 delivers it in spades. An elliptical-section tubular steel frame, with an integrated roll cage, anchors billet-machined independent suspension. Fully adjustable dampers and thick sway bars keep the carbon bodywork settled over mid-corner kerbs.

⚡ Michelotto GR4
Fast Specs
⚙️Engine / Powertrain 3.4L Naturally Aspirated V8 (2 valves per cylinder)
🐎Power Output 375 HP
⚡Peak Torque 363 Nm (268 lb-ft)
⏱️0-60 mph (0-100 km/h) 0-60 mph in 3.8s (est.)
🚀Top Speed 150 mph (241 km/h) (est.)
🔄Drivetrain / Gearbox 5-Speed Manual / RWD
💰Starting Price / Est. €450,000 (~$503,000)

Dogleg First Gear Explained

First gear sits down and to the left, which lines up second and third in a straight shot. That layout shortens shift times on tight rally stages where every tenth counts. Gear ratio sets are interchangeable, so teams can tune the car for each course.

Stopping duty falls to four-piston calipers clamping 345-millimeter front rotors. Clamshell panels open for quick roadside repairs, a practical touch that suits a car built for competition.

Scarcity, Options, and a Bold Forecast

Michelotto limits production to fewer than 50 examples, with pricing starting above 450,000 euros, roughly $503,000. The optional Rally package adds auxiliary headlights, Lexan windows, magnesium wheels, and a dedicated engine map. On paper, that is expensive. In reality, my bet is that the first GR4 to change hands will eclipse its original price within a decade.

Ultimately, the Michelotto GR4 proves analog engineering still has a place. Its two-valve, rally-bred V8 demands commitment, and that is exactly why it matters. Explore more performance coverage at Auto News Magazine.

Source: CarBuzz
Marcus Vance
Written By

Marcus Vance

Senior Track & Performance Editor at Auto News Magazine. Veteran automotive journalist specializing in chassis dynamics, apex telemetry, track-day specials, and high-revving mechanical purity.

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