Coated Headers - BBC Shorty

The Doug's Headers Coated Headers BBC Shorty (part D306) is a purpose-built exhaust manifold system engineered for big-block Chevy applications requiring compact packaging without sacrificing flow characteristics. These shorty-style headers use 1.75-inch primary tubes converging into a 3-inch collector, optimized for engine bays where traditional long-tube headers prove incompatible. The metallic ceramic coating provides thermal barrier protection, reducing underhood temperatures while managing radiant heat away from sensitive components like fuel lines, wiring, and intake manifolds.

Doug's Headers constructs these units from steel, delivering durability under sustained high-heat cycling. The 1.75-inch primary diameter balances scavenging efficiency with low-end torque retention—smaller than full-race 1.875-inch tubes but larger than restrictive 1.625-inch designs. The 3-inch collector diameter provides adequate cross-sectional area to transition exhaust pulses smoothly into your exhaust system without creating backpressure. Installation is straightforward: gaskets and mounting hardware ship included, eliminating secondary purchases. At 29.8 pounds, these headers remain manageable for single-technician installation while maintaining structural rigidity during engine operation.

Shorty headers suit street performance builds, vintage restoration projects, and engine swaps where long-tube routing becomes problematic. Applications include vehicles with tight engine compartments, aftermarket suspension components, or tight-fitting firewalls. The metallic ceramic coating extends component lifespan in street-driven vehicles where thermal management and corrosion resistance matter. This system works well for big-block Chevy platforms including 396, 427, and 454-cubic-inch engines in various model years and chassis configurations.