Chevrolet Corvette Z06 Tuning Guide — Best Setup for FH6

Class Range: A - S2 | Base HP: 670 | Drivetrain: RWD | Weight: 1,560 kg | Best Class: S1

The C8 Corvette Z06 is the car that made me fall in love with mid-engine RWD in FH6. 670 horsepower from a flat-plane crank V8 that revs to 8,600 RPM and makes a noise closer to a Ferrari than anything wearing a Chevrolet badge. This engine doesn't sound American — it sounds like it escaped from Maranello and started working at a Chevrolet dealership under a fake name.

The Z06's mid-engine layout gives it natural rotation that front-engine cars can only dream of. At 1,560 kg with a 40/60 front/rear weight distribution, it rotates naturally mid-corner without the snap-oversteer drama of the Jesko. The magnetic ride control suspension (adaptive damping in FH6) means you can run stiffer springs than normal without sacrificing ride quality over curbs.

Best Tuning Setups by Class

S1 (900) — Track Weapon

Tires: 29/30 PSI

Gearing: Balanced final, 4.50

Camber: -1.5°/-1.0°

ARB: 30/28

Springs: Front 600 / Rear 550

Ride Height: Lowest

Aero: 35% front, 30% rear

Diff Accel: 65%/25%

The all-around S1 build. Fast enough for straights, grippy enough for corners. What the Z06 was designed to do.

S1 (900) — Time Attack

Tires: 28/29 PSI

Gearing: Accel final, 4.80

Camber: -1.8°/-1.2°

ARB: 32/30

Springs: Front 650 / Rear 600

Ride Height: Low +1 click

Aero: 50% front, 45% rear

Diff Accel: 70%/25%

Maximum grip for hotlapping. Sacrifices 15 km/h top speed for cornering speed. Use on short, technical circuits.

Key Tuning Parameters

Engine & Power

The LT6 flat-plane crank V8 demands a different approach than cross-plane V8s. The power band starts at 4,000 RPM and pulls hard to 8,600 — below 4,000, the engine feels lazy. Gearing must keep RPMs above 4,000 at all times. For upgrades, intake and exhaust mods add 40-50 hp for minimal PI. Skip the camshaft upgrade — the stock cam is already aggressive. Skip the supercharger too — the whine fights with the flat-plane exhaust note.

Suspension & Handling

The mid-engine layout provides natural rotation. Rear ARB should be 2-3 clicks softer than front — the weight distribution already provides rotation. Adding more with ARB tuning makes the car nervous. Magnetic ride control lets you run springs 10-15% stiffer than normal — dampers auto-soften over curbs and stiffen during cornering.

Gearing Strategy

The 8,600 RPM redline lets you run shorter gearing than expected for a 670 hp car. Set final drive so 6th redlines at actual top speed on your test track. Tighten 2nd-4th — these are the corner-exit gears where the flat-plane character really shines.

Common Tuning Mistakes

Treating it like a front-engine Corvette. The C8 is mid-engine. It rotates and balances differently than any C7.
Not revving high enough. Peak power at 8,400 RPM. Shifting at 7,000 leaves 100+ hp unused.
Too much rear downforce. The mid-engine weight distribution already plants the rear.

Problem	Fix
Understeer on corner entry	Add 0.2° front toe-out, reduce front ARB by 2 clicks, shift brake balance to 52% front
Engine bogs below 4,000 RPM	Shorten 2nd and 3rd gear, keep RPMs above 4,000 — flat-plane crank doesn't work at low revs
Snap oversteer on corner exit	Soften rear ARB by 3 clicks, reduce accel diff lock to 60%, add 0.1° rear toe-in