BBC 366cc BB3 Xtra Head 2.300/1.880 Assm.

The BBC 366cc BB3 Xtra Head 2.300/1.880 Assm. by Brodix represents a serious upgrade path for big-block Chevy engine builders and performance enthusiasts pursuing maximum flow efficiency and combustion chamber optimization. This cylinder head assembly is engineered for those committed to extracting peak horsepower and torque from BBC platforms, whether you're building a street machine, bracket racer, or high-performance crate engine. Brodix's BB3 Xtra line combines decades of flow-bench development with precision casting and port design to deliver measurable gains in volumetric efficiency that translate directly to dyno results.

The 366cc combustion chamber volume paired with 2.300-inch intake and 1.880-inch exhaust valve sizes creates an optimal flow path for high-RPM applications while maintaining structural integrity under boost or nitrous oxide. The "Xtra Head" designation indicates factory porting that reduces restriction through the intake and exhaust passages—critical for eliminating bottlenecks that limit breathing at elevated engine speeds. Brodix's precision manufacturing ensures valve seat durability and flow consistency across the cylinder head, with hardened seats ready for aggressive fuel and ignition curves. The assembly weighs 48.53 lbs, typical for a fully-ported big-block casting with integral passages and reinforced combustion chamber walls designed to withstand high detonation loads.

Serious BBC builders and race teams choose the BB3 Xtra Head for applications requiring maximum flow without custom head work—carburetor or fuel-injected engines, naturally aspirated or forced induction platforms benefit from this architecture. Installation on 396, 427, or 454 big-block Chevrolet engines demands proper valve train matching, gasket selection, and tuning validation; consult your engine builder or technical resource for manifold compatibility and intake port mismatch requirements. At 10.5 x 9 x 24 inches, the casting fits standard BBC engine bays and accepts conventional rocker arm systems, though camshaft duration and valve lift must align with the head's flow characteristics to realize full performance potential.