GSC R3 Camshafts – 5.0L Coyote Gen 4 (2024–2025 Mustang 5.0)

GSC R3 Camshafts – 5.0L Coyote Gen 4 (2024–2025 Mustang 5.0)

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Max-effort race cams for ported-head Gen-4 Coyote Mustangs. Built for high rpm and methanol-capable combos. Spring upgrade required. DI/HPFP lobe retained. Fuel: Methanol 

    • Part Number
      GSC7079R3
    • $2089.41
    Out of stock
    warning Warning: This product can expose you to chemicals including Nickel (Metallic), which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. More information on California Proposion 65 can be found on Proposion 65 Warnings and OEHHA websites.

    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 4 Mustang Coyote 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)
    • NA Builds require Aftermarket Intake manifolds such as the Cobra jet. 
    • 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: 2024–2026 Mustang GT 5.0L & Dark Horse

    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 4 Coyote Mustang)

    CamAdvertised DurationDuration @ .050"Centerline (CL)Max LiftCam Timing @ Peak Power (Active & Locked)
    Intake300°246°146°.560"
    Active VCT: 118.5° ATDC
    Locked (≈8,400 peak): 112° ATDC
    Locked (≈9,500 peak): 118.5° ATDC
    Exhaust316°252°138°.560"
    Active VCT: 118° BTDC
    Locked (≈8,400 peak): 115° BTDC
    Locked (≈9,500 peak): 118° BTDC
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