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. 

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

Specifications

Install notes

  • Fuel: Methanol. Gasoline/Ethanol blended fuels wont reach peak powers with this profile.
  • Clearance: Always verify piston-to-valve with your exact heads/pistons/gasket stack. With OEM pistons & deck heights, the full phaser range is typically usable without clearance issues.
  • Use upgraded valve springs (and Ti retainers) set to the tuner’s rev limit; check installed height and coil bind.
  • Active VCT requires a calibrated phasing window; locked setups require a lockout kit and fixed timing calibration.
  • See install sheet for torque sequence and procedures; prime oiling and fuel (HPFP follower inspection) on reassembly.

 

Specifications

  • Fuel Type: Methanol
  • RPM Range (Active VCT): 6,500–10,000 (with peak power at approximately 9,500 RPM)
  • RPM Range (Locked VCT): * 6,700–8,900 (Peak: ~8,400 RPM)
  • 7,800–10,000 (Peak: ~9,500 RPM)
  • Valve Springs Requirement: Upgrade required (GSC springs + Titanium retainers)
  • Primary Use Case: Extreme Racing / High-RPM applications
  • Cylinder Head Type: Ported heads
  • DI Pump Lobe Profile: OEM geometry retained (fully High-Pressure Fuel Pump compatible)

Features

  • Profile intent: Max-effort, high-RPM for ported heads and methanol fuel combos
  • Valve springs: Upgrade required (use GSC-matched springs; Ti retainers recommended)
  • VCT options: Supports Active VCT or Locked phasers (see timing reference below)
  • Manufacturing: MADE IN THE USA; forged from proprietary U.S.-sourced bearing-grade steel, BLACK ISE surface treatment, CNC to tighter-than-OEM tolerances
  • Fitment: 2018–2021 F150 V8 Coyote 5.0L

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 - 2021 Ford F-150 Coyote Gen 3 (w/Ported Head) 300/316 Billet R3 Camshafts (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. 

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

Install notes

  • Fuel: Methanol. Gasoline/Ethanol blended fuels wont reach peak powers with this profile.
  • Clearance: Always verify piston-to-valve with your exact heads/pistons/gasket stack. With OEM pistons & deck heights, the full phaser range is typically usable without clearance issues.
  • Use upgraded valve springs (and Ti retainers) set to the tuner’s rev limit; check installed height and coil bind.
  • Active VCT requires a calibrated phasing window; locked setups require a lockout kit and fixed timing calibration.
  • See install sheet for torque sequence and procedures; prime oiling and fuel (HPFP follower inspection) on reassembly.

 

Specifications

  • Fuel Type: Methanol
  • RPM Range (Active VCT): 6,500–10,000 (with peak power at approximately 9,500 RPM)
  • RPM Range (Locked VCT): * 6,700–8,900 (Peak: ~8,400 RPM)
  • 7,800–10,000 (Peak: ~9,500 RPM)
  • Valve Springs Requirement: Upgrade required (GSC springs + Titanium retainers)
  • Primary Use Case: Extreme Racing / High-RPM applications
  • Cylinder Head Type: Ported heads
  • DI Pump Lobe Profile: OEM geometry retained (fully High-Pressure Fuel Pump compatible)

Features

  • Profile intent: Max-effort, high-RPM for ported heads and methanol fuel combos
  • Valve springs: Upgrade required (use GSC-matched springs; Ti retainers recommended)
  • VCT options: Supports Active VCT or Locked phasers (see timing reference below)
  • Manufacturing: MADE IN THE USA; forged from proprietary U.S.-sourced bearing-grade steel, BLACK ISE surface treatment, CNC to tighter-than-OEM tolerances
  • Fitment: 2018–2021 F150 V8 Coyote 5.0L

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 - 2021 Ford F-150 Coyote Gen 3 (w/Ported Head) 300/316 Billet R3 Camshafts (Req Spring Upgrade)

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