Engines and Components› Camshafts and Valvetrain

Psi

LS1515ML Beehive Single Valve Spring Set

$339.50

SKU: PSI LS1515ML

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Overview

The Psi LS1515ML is a beehive single valve spring set designed for high-performance LS7 and Hemi applications. This spring set features a nitriding operation that increases surface strength and endurance.
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The Psi LS1515ML is a severe duty beehive single valve spring set engineered for demanding Late Model LS7 and Hemi engine applications. This specific model incorporates the Max Life (ML) multi-step surface enhancement process, which significantly boosts spring endurance. The nitriding process, performed in-house, enhances the strength at the wire's surface while slightly softening the core material. This trade-off is particularly beneficial for Circle Track and Road Circuit racing teams, as it combats fatigue at the wire surface. However, this softening of the core material makes nitriding less suitable for drag racing applications where endurance is not the primary limiting factor. Key specifications for the PSI LS1515ML include a 1.290″ outside diameter, a 0.640″ inner ID, and a recommended maximum valve lift of 0.650″. The springs provide 140 lbs of seat pressure at 1.950″ installed height and 405 lbs of open pressure at 1.300″ open height. The coil bind height is 1.225″, and the spring rate is 408 lbs/in.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandPsi
Part NumberPSI LS1515ML
CategoryEngines and Components
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