The RPM Xtreme for small-block Ford is an all new design that is CNC ported where it counts to achieve optimal air-flow for maximum horsepower and torque in high performance street and light duty racing applications. The casting and port design are all new and engineered to be as close to perfect as possible. To ensure consistency from port to port, the RPM Xtreme is treated to a fully CNC ported 59cc combustion chamber, and then CNC ported in the bowl area for a smooth transition into the valve seat. The intake runner entries and exhaust runner exits are partially CNC ported for improved air-flow. These heads feature 2.02" intake and 1.57" exhaust 8mm stem valves and are equipped with conical valve springs and titanium retainers for a lightweight and durable valve train combo. RPM Xtreme small-block Ford heads have an aggressive 18° valve angle for maximum performance and accepts common intake manifolds such as Edelbrock Performer RPM and RPM II.

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