PRO1 ALUMINUM SMALL BLOCK CHEVY CYL

The Dart Pro 1 Aluminum Cylinder Head (part number 11510020PF) is a bare cylinder head designed for serious street performance, bracket racing, and restricted oval track applications up to 7000 RPM, specifically for 350/400 cubic inch Small Block Chevrolet engines. It features a 64cc combustion chamber, 215cc intake runners, and is configured for angle spark plugs. This head accommodates 2.05" intake and 1.60" exhaust valves (valves not included).

Constructed from high-strength 355-T6 aluminum, these heads are an upgrade to original small-block designs, incorporating extra-thick decks and high-capacity water jackets to enhance reliability in high-performance settings. They also feature hardened exhaust seats and long-lasting mag-bronze valve guides for extended product life. The Pro 1 heads are engineered for straightforward installation, utilizing standard small-block pistons, headers, and valvetrain components, serving as direct bolt-on replacements for most conventional 23-degree heads. Dart offers various options, including different intake runner sizes (180cc, 200cc, 215cc, 230cc), chamber volumes (64cc, 72cc), valve diameters, and spark plug orientations (straight or angled).