Description

The GSC R3 is a max-effort, high-RPM profile for ported heads and methanol builds. It’s engineered to carry power where the Coyote lives on the limit, with lobe design modeled against ported Gen 3 cylinder head behavior and rocker geometry. Each set is cut from our U.S.-made forged billet blanks and finished with BLACK ISE for reduced friction and long life.

Max-effort race cams for ported-head Gen-3 Coyote. Built for high rpm and methanol-capable combos. 

Spring upgrade required. DI/HPFP lobe retained. Fuel: Methanol 

Direct Injection note: the high-pressure fuel pump (DI/HPFP) lobe is kept to OEM spec for proper pump operation.

Always verify piston-to-valve clearance on your exact build. VCT strategy is tuner dependent.

Specifications

  • Intake – Advertised Duration: 300° · Duration @ .050": 246° · Centerline: 120° · Max Lift: .560"
    Active VCT: 118.5° ATDC · Locked (≈8,400 peak): 112° ATDC · Locked (≈9,500 peak): 118.5° ATDC
  • Exhaust – Advertised Duration: 316° · Duration @ .050": 252° · Centerline: 138° · Max Lift: .560"
    Active VCT: 118° BTDC · Locked (≈8,400 peak): 115° BTDC · Locked (≈9,500 peak): 118° BTDC

Features

  • Fuel: Methanol only. Gasoline/ethanol blends will not achieve peak output with this profile.
  • Clearance: Always verify piston-to-valve clearance with your exact heads, pistons, and gasket stack. With OEM pistons and deck heights, the full phaser range is typically usable.
  • Valve Springs: Use upgraded valve springs and titanium retainers set to the tuner’s rev limit. Check installed height and coil bind.
  • VCT / Timing: Active VCT requires a calibrated phasing window. Locked setups require a lockout kit and fixed timing calibration.
  • Installation: See the install sheet for torque sequence and procedures. Prime oiling and fuel systems on reassembly, including HPFP follower inspection.

Additional Specifications

  • Fuel Methanol
  • RPM (Active VCT) 6,500–10,000 (≈9,500 peak)
  • RPM (Locked VCT) 6,700–8,900 (≈8,400) or 7,800–10,000 (≈9,500)
  • Valve Springs Upgrade required (GSC springs + Ti retainers)
  • Use Case Extreme Race · high-RPM
  • Head Type Ported heads
  • DI Pump Lobe OEM geometry retained (HPFP compatible)

Compatibility

  • 2018 - 2023 Ford Mustang Coyote Gen 3 (w/Ported Head) 300/316 R3 Billet Cams (Req Spring Upgrade)

The GSC R3 is a max-effort, high-RPM profile for ported heads and methanol builds. It’s engineered to carry power where the Coyote lives on the limit, with lobe design modeled against ported Gen 3 cylinder head behavior and rocker geometry. Each set is cut from our U.S.-made forged billet blanks and finished with BLACK ISE for reduced friction and long life.

Max-effort race cams for ported-head Gen-3 Coyote. Built for high rpm and methanol-capable combos. 

Spring upgrade required. DI/HPFP lobe retained. Fuel: Methanol 

Direct Injection note: the high-pressure fuel pump (DI/HPFP) lobe is kept to OEM spec for proper pump operation.

Always verify piston-to-valve clearance on your exact build. VCT strategy is tuner dependent.

  • Intake – Advertised Duration: 300° · Duration @ .050": 246° · Centerline: 120° · Max Lift: .560"
    Active VCT: 118.5° ATDC · Locked (≈8,400 peak): 112° ATDC · Locked (≈9,500 peak): 118.5° ATDC
  • Exhaust – Advertised Duration: 316° · Duration @ .050": 252° · Centerline: 138° · Max Lift: .560"
    Active VCT: 118° BTDC · Locked (≈8,400 peak): 115° BTDC · Locked (≈9,500 peak): 118° BTDC

Features

  • Fuel: Methanol only. Gasoline/ethanol blends will not achieve peak output with this profile.
  • Clearance: Always verify piston-to-valve clearance with your exact heads, pistons, and gasket stack. With OEM pistons and deck heights, the full phaser range is typically usable.
  • Valve Springs: Use upgraded valve springs and titanium retainers set to the tuner’s rev limit. Check installed height and coil bind.
  • VCT / Timing: Active VCT requires a calibrated phasing window. Locked setups require a lockout kit and fixed timing calibration.
  • Installation: See the install sheet for torque sequence and procedures. Prime oiling and fuel systems on reassembly, including HPFP follower inspection.

Additional Specifications

  • Fuel Methanol
  • RPM (Active VCT) 6,500–10,000 (≈9,500 peak)
  • RPM (Locked VCT) 6,700–8,900 (≈8,400) or 7,800–10,000 (≈9,500)
  • Valve Springs Upgrade required (GSC springs + Ti retainers)
  • Use Case Extreme Race · high-RPM
  • Head Type Ported heads
  • DI Pump Lobe OEM geometry retained (HPFP compatible)
  • 2018 - 2023 Ford Mustang Coyote Gen 3 (w/Ported Head) 300/316 R3 Billet Cams (Req Spring Upgrade)

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