SBC Cast Iron Head - 170cc S/P 64cc

The SBC Cast Iron Head - 170cc S/P 64cc from ENGINEQUEST is a foundational cylinder head upgrade for small-block Chevy engines seeking improved airflow and combustion efficiency. Built for budget-conscious builders and weekend mechanics who demand reliability without premium pricing, this head delivers the flow characteristics needed for street performance, stock-replacement applications, and mild to moderate boost scenarios. Cast iron construction ensures proven durability and heat dissipation properties that have sustained countless engine builds over decades of automotive history.

The 170cc intake runner combined with straight-port (S/P) design optimizes velocity and cylinder filling across the RPM band, while the 64cc combustion chamber volume maintains factory-friendly compression ratios when used with stock or mildly domed pistons. Cast iron composition absorbs and distributes thermal load evenly, preventing hot spots and enabling consistent detonation control—critical when tuning carbureted or early fuel-injected platforms. Weighing 45.1 lbs per head, this component fits within standard mounting dimensions (8.75 x 6.8 x 22 inches), ensuring bolt-on compatibility with existing SBC engine blocks and intake manifolds without requiring frame or accessory relocations.

Ideal for small-block Chevy owners restoring 262, 283, 302, 305, 327, or 350 cubic-inch engines, the SBC Cast Iron Head - 170cc S/P 64cc serves dual roles: as an economical OEM-pattern upgrade or as the foundation for naturally aspirated power increases up to 400+ hp. Installation requires standard head bolts, gasket sealing surfaces, and intake/exhaust manifold adapters already in most shops' inventory. Verify Year/VIN-specific deck height and valve train geometry before ordering to ensure trouble-free fitment and optimal performance across your intended application.