Mopar B/B Roller Rockers 1.6 Ratio Aluminum

The PROFORM Mopar B/B Roller Rockers 1.6 Ratio Aluminum assembly is a shaft-mount rocker arm component engineered for high-performance Mopar B-series and RB-series engine builds. This set of 16 roller rockers delivers a 1.6 mechanical advantage ratio with roller tip design and black anodized aluminum construction, providing the valve actuation precision demanded in street, strip, and competition applications where reliable, repeatable lift characteristics are non-negotiable.

The 1.6 ratio specification directly impacts valve event timing and duration—a higher ratio increases valve lift relative to camshaft lobe lift, allowing carburetor and induction systems to respond more aggressively across the RPM band. The roller tip design minimizes friction at the valve stem, reducing parasitic losses and improving reliability during sustained high-RPM operation. Black anodized aluminum construction resists corrosion while maintaining the weight savings critical to reducing overall rotating mass and reciprocating assembly stress. Shaft-mount design ensures consistent geometry and eliminates individual stud deflection common in stud-mount configurations, translating to more stable valve timing across load cycles.

This rocker assembly is purpose-built for Mopar builders who require OEM-compatible fitment without compromise on performance or durability. Whether you're building a street-cruiser 340, a mid-range 383, or a high-output 440 or 468 platform, these roller rockers provide the mechanical foundation for consistent valve control. The assembly integrates seamlessly with factory and aftermarket cam profiles, making it equally suitable for mild street applications and aggressive race-prepped engines.

PROFORM's positioning in the engine component aftermarket reflects decades of application expertise. This rocker set represents straightforward engineering—no exotic materials, no speculative design—just proven Mopar compatibility and the performance characteristics that Chrysler B-block and RB-block builders have come to expect from shaft-mount roller hardware.