Chevrolet Camaro ZL1 Tuning Guide — Best S1 Setup

Class Range: S1 900 | Base Horsepower: 650 hp | Drivetrain: RWD | Weight: 1770 kg | Best Class: S1 900

The ZL1 is one of those classic 'skill check' cars in FH6 — drive it well and your throttle control is solid, drive it badly and it's a donut machine. The supercharged V8 is nothing like a turbo: throttle response has zero lag, you get exactly what you ask for, with none of that turbo spool-up cushion. For beginners that's lethal, because it's easy to give it too much by accident; for experienced players it's the best feedback there is.

The stock ZL1 chassis is actually already great — the Alpha platform is top-tier among muscle cars. Tuning here isn't about a big overhaul; it's about making the car more obedient — reducing the chance of sudden rear-wheel spin on corner exit while keeping that punch-in-the-chest supercharged shove.

The ZL1's biggest rival isn't other cars — it's the tires. All 650 horses go to the rear wheels, so tire-temperature management matters more than anything. Be gentle for the first two laps on cold tires, otherwise you'll make more smoke than speed.

Best Tuning Setup for S1 900

The Track build drops a bit of horsepower but laps faster overall — a supercharger's torque doesn't need peak horsepower to set lap times, and a stable, controllable corner exit beats an extra 50 hp every time.

Tuning Parameters — Every Setting Explained

Tire Pressure

Front 2.1 bar / Rear 1.9 bar. The rear runs lower because the rear tires heat up extremely fast on launch and corner exit. With cold rear pressure 0.2 lower than the front, both ends settle into a similar temperature range once warm.

Transmission

Final drive ratio 3.91. The key is tightening gears 3–4–5, the three you'll use most on track. The supercharger sounds like tearing metal at high rpm, and the close ratios are there so you get to hear more of it.

Alignment

Front Toe +0.1 / Rear Toe +0.1, Front Camber -1.8 / Rear Camber -1.2, Caster 7.0 degrees. A touch of positive toe front and rear — a high-power RWD car needs straight-line stability.

Anti-Roll Bars

Front 33.0 / Rear 22.0. Clearly stiff front, soft rear — used to counter the oversteer of a high-power RWD car mid-corner.

Springs

Front 600 / Rear 480 (lbs/in). The rear springs are a good deal softer than the front specifically for corner-exit traction. A high-power RWD car's biggest fear is a rear end so stiff that tire load fluctuates.

Damping

Rebound Front 9.0 / Rear 7.5, Bump Front 6.0 / Rear 4.8. Overall on the soft side, but with rebound control kept tight.

Aero

Wing angle at medium, front lip at medium-low. Don't get greedy with downforce — at 1770 kg the car is already heavy enough.

Brakes

Brake balance front-biased at 48%, pressure 120%. Muscle car brakes generally trail European supercars, so crank the pressure up a bit.

Differential

Accel lock 70% / Decel lock 25%. High accel lock makes both rear wheels drive together on corner exit. Low decel lock lets the tail follow flexibly into the corner.

Driving Tips

The core skill for driving the ZL1 is 'right-foot education.' The supercharger's torque is fully on tap from 2000 rpm — unlike a turbo, there's no waiting. Feed the throttle on corner exit like you're slowly turning a volume knob, not flicking it all the way up. Third gear is the best choice for exits; fourth works too but the shove isn't as satisfying. Fast corners are its happy place — hold the throttle steady at 4500 rpm in fourth and the car settles into a slight, controllable slip angle. Rain? I'd skip it — 650 hp through the rear wheels plus wet roads equals you watching the rear tires draw circles from behind the wheel. One more trick — use the weight. When you lift off into a corner, the ZL1's tail naturally steps out a touch, and that mild oversteer can be used to help turn-in.

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