The stock valve springs in the Gen 3 and Gen 4 Coyote 5.0L engines are designed for reliable daily driving but can experience valve float, loss of control, and reduced performance at higher RPMs or with aggressive camshaft profiles. The GSC Power-Division Ovate Conical Valve Spring Kit delivers a high-performance upgrade engineered for elevated RPM capability, superior valve control, and compatibility with extreme cam lifts, making it the ideal choice for boosted, high-horsepower, or track-focused Mustang builds.
Advanced ovate conical spring design. Utilizing premium ovate wire and conical shape, these springs provide progressive spring rates that reduce harmonic resonance and valve float while allowing higher safe RPM operation compared to traditional beehive or cylindrical springs, ensuring precise valve timing even under extreme conditions.
Super finished surface treatment. Each spring features a super finished surface process combined with patented multi-step heat treating, enhancing fatigue resistance and longevity for proven reliability in high-boost and high-RPM applications.
Complete kit with premium components. Includes lightweight titanium retainers, spring seats, and precisely matched springs designed specifically for the Coyote platform, providing a direct drop-in upgrade that supports aggressive camshafts and elevated boost levels without requiring machining.
Product Benefits
- Fits Gen3/4 Mustang 5.0L, Gen3 F-150 5.0L
- Ovate conical wire design
- Higher RPM capability
- Reduced valve float
- Super finished surface
- Enhanced fatigue resistance
- Titanium retainers included
- Supports aggressive cams
- High-boost compatible, max boost 30+ psi
- Precise valve control
- Direct fit for Gen 3 & Gen 4 Coyote
- Track-proven reliability
About GSC Power-Division: GSC Power-Division is a leading manufacturer of high-performance valvetrain components trusted by professional racers and engine builders worldwide. With a focus on innovative materials and cutting-edge engineering, GSC delivers camshafts and valvetrain solutions that maximize power, reliability, and performance in modern high-output engines like the Ford Coyote.
Valve Spring Specs:
- Setup: Ovate Conical
- Coil Bind (in): 0.960
- Install Height (in): 1.621
- Seat Pressure (lbs): 97
- Open Pressure: 295 lbs @ 1.020
- Maximum Valve Lift (in): 0.600
WARNING: California Residents: Cancer and Reproductive Harm;
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- Vehicle Fitment:
- 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
- Vehicle Trim:
- GT
- Vehicle Trim:
- Dark Horse
- Vehicle Trim:
- XL
- Vehicle Trim:
- XLT
- Vehicle Trim:
- Lariat
- Vehicle Trim:
- King Ranch
- Vehicle Trim:
- Platinum
- Vehicle Trim:
- Limited
