Description
Upgrade your 2018–2023 Ford 5.0L Coyote or 5.2L Voodoo/Predator engine with the PAC Racing PAC-1281X Beehive Valve Springs. Designed for high-performance applications, these springs are ideal for engines equipped with aftermarket camshafts or forced induction systems. The beehive design reduces valvetrain mass and enhances stability at high RPMs, ensuring reliable performance under demanding conditions.
Key Features:
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Drop-In Fitment: Compatible with Gen 3 and Gen 4 Coyote engines without the need for machining.
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Enhanced Performance: Supports up to 0.551″ valve lift, suitable for high-RPM and boosted applications.
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Durable Construction: Manufactured from premium materials for longevity and consistent performance.
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Optimized Design: Beehive shape and ovate wire reduce valvetrain mass and improve spring dynamics.
Specifications:
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Installed Height: 1.811″
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Seat Pressure: 80 lbs @ 1.811″
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Open Pressure: 215 lbs @ 1.260″
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Maximum Valve Lift: 0.551″
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Spring Rate: 245 lbs/in
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Coil Bind Height: 1.208″
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Outer Diameter (Base): 1.031″
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Inner Diameter (Base): 0.709″
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Outer Diameter (Top): 0.849″
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Inner Diameter (Top): 0.527″
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Mass: 44 grams per spring
Whether you’re building a naturally aspirated screamer or a boosted beast, the PAC-1281X valve springs provide the reliability and performance needed to push your engine to the next level.
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