Ford 351c&m/400m Mag-Dbl Roller Timing Set

The COMP CAMS Ford 351C&M/400M Magnum Double Roller Timing Set (Part No. 2121CPG) is a precision-engineered timing chain assembly designed for high-performance Ford Cleveland and Modified engine builds. This double roller configuration delivers improved chain stability and reduced stretch compared to single roller designs, critical for maintaining accurate ignition timing under sustained high-RPM operation and engine stress.

Built from cast iron and billet steel components, this timing set combines proven durability with precision manufacturing. The double roller design minimizes deflection and lateral chain movement, reducing timing variance across the RPM range. For Ford 351C, 351M, and 400M engines—particularly those pushed beyond stock power levels—consistent valve timing is essential to prevent detonation, optimize fuel charge burn rate, and protect internal components from timing-related stress failures.

This kit is engineered for enthusiasts and rebuilders performing complete engine overhauls, performance upgrades, or restoration work on classic and modified Ford engines. Whether you're rebuilding a street machine, off-road vehicle, or performance platform, a quality timing set from a trusted manufacturer like COMP CAMS ensures your valve train operates as intended without the risk of stretch-related timing drift that can develop in older or lower-cost single roller chains.

The double roller configuration is industry-standard in performance and racing applications where chain longevity and precision matter. This is the timing set specification chosen by engine builders who value consistency and reliability in demanding conditions.