SBC 221cc Track 1 Heads 67cc 2.08/1.60 Assm.

The SBC 221cc Track 1 Heads 67cc Assembled cylinder head is a precision-engineered component designed for Small Block Chevy engine builds demanding high-flow intake characteristics and optimized chamber geometry. This pair features a 221 cubic centimeter intake port volume paired with a compact 67 cubic centimeter combustion chamber, delivering the port-to-chamber ratio critical for consistent cylinder-to-cylinder performance across the entire RPM band.

These assembled Track 1 heads come complete with 2.080-inch intake and 1.600-inch exhaust valves, double-spring assemblies rated at 1.550 inches, and angle-plug design for superior spark positioning in the combustion chamber. The aluminum construction provides the strength-to-weight ratio necessary for both naturally aspirated and forced-induction applications, while the pre-assembled configuration eliminates guesswork during installation and reduces setup time in the shop. The port configuration supports airflow velocities suitable for mid-range to high-RPM operation, making these heads compatible with performance cam profiles and intake manifold combinations common in street and track builds.

Buyers specifying Small Block Chevy cylinder heads for engine rebuilds, restorations, or performance upgrades will find these Track 1 heads suitable for applications where intake flow and chamber efficiency take priority. The 67cc chamber volume pairs effectively with modern piston designs and compression ratios between 9.5:1 and 11:1. This head is sold as a pair, meeting the requirement for complete dual-head installation on any Small Block Chevy variant.

The combination of verified flow numbers, established port geometry, and angle-plug architecture positions this product within the Track 1 category—a specification tier widely recognized across the Small Block Chevy community for street-performance and entry-level racing applications. Weight per pair is 66.2 pounds, a baseline for aluminum heads of this displacement and construction.