Ford 427-428 Rocker Arms - 1.76 Ratio

The Ford 427-428 Rocker Arms with a 1.76 ratio are designed for serious enthusiasts who are building or rebuilding high-performance big-block Ford engines. These rocker arms are essential components that control valve actuation in 427 and 428 cubic-inch displacement engines, translating camshaft motion into precise valve lift and timing. Whether you're restoring a classic muscle car or constructing a dedicated race powerplant, these rocker arms are engineered to enhance performance.

The 1.76 rocker arm ratio provides a mechanical advantage that multiplies camshaft lift at the valve, optimizing valve response and engine efficiency. These rocker arms are manufactured with precision tolerances and durable materials to withstand the demanding cycles of both street and track use. Their geometry and construction ensure consistent valve motion and reliability under high-RPM conditions.

Ideal for anyone restoring or upgrading Ford big-block engines from the 1960s and 1970s, these rocker arms are compatible with various applications, including the Torino, Ranchero, Thunderbird, and full-size truck platforms. With their focus on performance and durability, they are a perfect choice for both street performance and racing enthusiasts.