Manley 43140 High-Performance Steel Rocker Arms 1.5 Ratio

Manley

<h3>Manley Performance: Six Decades of Engine Building Excellence</h3> <p>Since 1966, Manley Performance Products has been at the forefront of the high-performance automotive industry, building a reputation that spans from grassroots drag racing to professional motorsports. The company has proudly served legends of the racing world like Don Garlits, Bill Jenkins, and "Jungle Jim" Liberman, establishing a legacy built on precision engineering and unwavering quality standards.</p> <p>What began as a small New Jersey operation with a simple mimeographed catalog has evolved into one of the industry's most trusted names in internal engine components. Today, Manley operates state-of-the-art manufacturing facilities equipped with advanced CNC machinery, producing components that meet the demanding specifications of both weekend warriors and championship-winning race teams.</p> <h3>Premium Connecting Rods for Every Application</h3> <p>At the heart of Manley's product line are their <a href="/430-manley-engine-connecting-rod-5276">engine connecting rods</a>, engineered to handle everything from street performance to extreme racing applications. Manley offers H-Beam rods, stock appearing Sportsmaster rods, and Pro Series rods, with designs ranging from Feather Lites to Turbo Tuff in 4340 aircraft quality alloy, plus Dirt Series rods made from exotic 300M material. These forged components undergo rigorous quality control processes to ensure they can withstand the tremendous forces generated by high-horsepower builds.</p> <h3>Forged Pistons Built for Extreme Performance</h3> <p>Manley's <a href="/430-manley-engine-piston-5620">engine pistons</a> represent the culmination of decades of racing experience and metallurgical expertise. The Platinum Series Pistons are forged from 2618 alloy and designed to endure extreme forces and high-temperature environments, with Contour Forgings ensuring optimal balance between strength and weight. Whether you're building a naturally aspirated street machine or a boosted race engine, Manley pistons deliver the durability needed for reliable performance under stress.</p> <h3>Camshafts and Valvetrain Components</h3> <p>Precision valvetrain components are essential for maximizing engine efficiency and power output. Manley's <a href="/430-manley-engine-camshaft-5260">engine camshafts</a> work in concert with their comprehensive valvetrain offerings to optimize valve timing and duration. The company's expertise extends to <a href="/430-manley-engine-exhaust-intake-valve-kit-17799">engine exhaust and intake valve kits</a>, where valves are crafted from severe-duty stainless steel and titanium alloys, designed to withstand extreme combustion pressures, high temperatures, and aggressive cam profiles.</p> <h3>Forged Steel Crankshafts for Ultimate Durability</h3> <p>Completing the rotating assembly, Manley's <a href="/430-manley-engine-crankshaft-5292">engine crankshafts</a> are manufactured to exacting tolerances using forged steel construction. The Pro Series 4340 alloy forged steel crankshafts are available for traditional Small Block and Big Block Chevy, Chevy LS, and Chrysler Hemi applications, along with fully machined Turbo Tuff Series billet cranks for sport compact engines. These critical components form the foundation of reliable, high-performance engine builds.</p> <h3>Why Engine Builders Choose Manley</h3> <p>What sets Manley Performance apart is their commitment to manufacturing excellence and application-specific engineering. Originally started in 1966 with heavy drag racing influences, Manley has evolved to become one of the industry's leading internal engine component manufacturers, maintaining their desire for product perfection. From material selection and forging processes to final machining and inspection, every component meets strict quality standards that have made Manley a trusted name among professional engine builders and performance enthusiasts alike.</p> <p>Whether you're rebuilding a classic muscle car, building a modern turbocharged sport compact, or assembling a competition engine, Manley Performance offers the precision-engineered components needed to achieve your performance goals with confidence and reliability.</p>