True Roller Timing Set - Chevy 348/409

The True Roller Timing Set for Chevy 348/409 is the gold standard upgrade for builders and enthusiasts restoring or modifying these legendary big-block engines. Originally equipped with roller timing chains, the 348 and 409 engines benefit dramatically from this precision timing set when rebuilding, upgrading to higher RPM capability, or correcting wear in original components. Whether you're freshening a stock rebuild or pushing into performance territory, accurate cam timing is foundational to reliable power delivery and engine longevity.

This Cloyes timing set is engineered with true roller construction, which minimizes friction losses compared to traditional leaf-spring designs and ensures repeatable, accurate cam indexing across the RPM range. The roller design reduces parasitic drag on the crankshaft, translating to measurable efficiency gains—critical when maximizing output from a 348 or 409 platform. Precision manufacturing tolerances guarantee proper chain tension maintenance and eliminate the slack and wear patterns that plague older or worn stock setups, supporting both stock and modified fuel and ignition curves without compromise.

This timing set is the correct choice for any 348 or 409 engine rebuild—whether you're restoring a vintage Chevy II, Chevelle, or full-size truck to original specification or building a performance variant. Installation is straightforward for any mechanic familiar with big-block Chevy timing cover procedures, and compatibility is assured across all 348/409 year ranges. Pair this with quality gaskets, fresh oil, and proper break-in protocol to ensure your timing chain investment delivers years of reliable engine operation.