ARCA Chevrolet SS

TYRES

• Compound: Short track option tire (ARCA spec)
• Left side (LF/LR): 20.0 PSI
• Right side (RF/RR): 50.0 PSI cold
• Tyre blanket temp: N/A (not used in ARCA)

ELECTRONICS

• TC: N/A (not equipped)
• ABS: N/A (not equipped)
• Engine Braking: N/A
• Brake Bias: 58.0% front

SUSPENSION

• // FRONT
• Ride Height: 89 mm (LF) / 92 mm (RF)
• Wheel Rate FL / FR: 16000 N/m / 17500 N/m
• ARB: 28000 N/m
• Brake Torque Multiplier: 100%
• Brake Bias: 58.0%
• // REAR
• Ride Height: 95 mm (RL) / 98 mm (RR)
• Wheel Rate RL / RR: 13500 N/m / 14500 N/m
• ARB: 9500 N/m
• Diff Preload: 55 Nm
• Diff Coast: 0.6
• Diff Power: 0.8

DAMPERS

AERO

• Spoiler angle: 70° (max for qualifying trim)
• Front splitter/air dam: minimum clearance, as low as rules allow (~Front RH limit above)
• Grille tape: 100% closed
• Downforce priority: rear stability sacrificed slightly for lower drag on straights

KEY SETUP NOTE

• EchoPark (Dover) is a high-banked (24°) concrete monster — run max left-side stagger-style cross weight bias via wedge/spring asymmetry (lower LF rate relative to RF, stiffer RR vs RL) to maximize forward bite off turn 2 and turn 4 while keeping the car tight enough on entry to carry speed deep into the corners without pushing into the wall.

TRACK GUIDE

• Turn 1 entry is flat-out commitment — lift only fractionally, trail brake extremely late using the high banking to carry speed; the wall is your reference, not your fear
• Mid-corner on the banking requires constant throttle modulation — full commitment to the bank lets the car rotate itself; lifting too early kills exit speed down the back straight
• Traction off Turn 2 and Turn 4 is where lap time is made — get back to throttle as early as possible, let the stagger and diff do the rotation work rather than steering input
• Run as high as possible on the banking through the center of both turns to use the full radius and carry more minimum speed, dropping low only on exit for drive
• Tire temps build quickly on this concrete surface — in a single hot lap, the first lap out of the pits before tire degradation sets in is your only true banzai attempt, so commit fully from the moment you cross the line