SBC DLM Header 1-5/8 - 1/3/2004

The BEYEA Custom Headers SBC DLM Header 1-5/8 is a purpose-built exhaust manifold engineered specifically for small block Chevy dirt late model racing applications. This pair of headers features 1.625-inch primary tubes that step up to a 3-inch collector, optimizing exhaust scavenging for the high-rpm demands of dirt track competition. Constructed from steel and finished in durable black paint, these headers arrive complete with gaskets included, ready for immediate installation on race-prepped small block engines.

The 1.625-inch primary diameter is calibrated for DLM power bands, where proper tube sizing directly impacts cylinder evacuation and volumetric efficiency. A larger primary would sacrifice low-end scavenging; a smaller one would choke high-rpm flow. The transition to the 3-inch collector consolidates exhaust pulses while maintaining velocity, a critical factor in maintaining backpressure and torque delivery across the operating range. The included gaskets ensure a clean seal without requiring separate sourcing. At 31 lbs, this pair represents a significant weight savings compared to factory cast manifolds while delivering measurably better thermal and flow characteristics.

Dirt late model racers rely on precision exhaust tuning to extract every fraction of horsepower and maintain consistent power delivery lap after lap. BEYEA Custom Headers have established themselves in the dirt racing community for headers that balance durability against thermal stress and vibration. This DLM-specific design is built for sustained high-rpm operation in competitive environments where component reliability is non-negotiable.

For small block Chevy dirt late model racers sourcing performance exhaust components, the BEYEA DLM Header offers race-proven fitment with verified flow characteristics. Pair these headers with a compatible exhaust system and dyno tune to optimize engine performance for your specific track and fuel combination.