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the problem of achieving higher flow without degrading critical operating parameters
3L Gas 1985-1987 Audi Quattro L5 2
Carbon Fiber Accents are provided for car show quality and to further distinguish your vehicle from others
2015-2019 Ford F-150 EcoBoost SuperCrew 3
6L Gas 2006-2006 Lincoln Zephyr V6 3
BTR: LT4 CONICAL SPRING KIT - .650" - SK014 cranshaft bolt the problem of achieving higherWe were first to market with a conical valve spring kit for Gen V LT4s. Big whoop, right? WRONG. Weight is the enemy of a proper functioning valvetrain. If your cam isn't too radical, a dual spring kit isn't required. These springs will vastly improve valvetrain stability at high RPM while still supporting up to . 650" lift. Made right here in the good ole US of A, this kit includes springs, locks, seals and locators. Uses stock retainers. LT1 L86
