GSC R3 Camshafts – 5.0L Coyote Gen 3 2018–2023 Mustang 5.0

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. 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) Highlights 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: 2018–2023 Mustang GT 5.0L Tuning & 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. Camshaft Specifications – GSC R3 (Gen 3 Coyote) Cam Advertised Duration Duration @ .050" Centerline (CL) Max Lift Cam Timing @ Peak Power (Active & Locked) Intake 300° 246° 120° .560" Active VCT: 118.5° ATDC Locked (≈8,400 peak): 112° ATDC Locked (≈9,500 peak): 118.5° ATDC Exhaust 316° 252° 138° .560" Active VCT: 118° BTDC Locked (≈8,400 peak): 115° BTDC Locked (≈9,500 peak): 118° BTDC