Dart Iron Eagle S/S Small Block Chevy Cylinder Heads 10021171

Description:

Stock replacement, street and strip performance, or towing upgrade with mildly modified engines from idle to 5,500 RPM. Best for 305-383 cubic inch engines. Works with most standard components. Dart Iron Eagle S/S 23 Deg 165cc heads produce great throttle response and low to mid-range torque for street performance engines. Our precision cast ports and chambers produce outstanding air flow without time consuming porting. Dart S/S heads are legal in many racing sanctions with Iron head rules. Assemblies include Stainless Steel valves, premium springs, locks, retainers, and seals. Guide plates not included for self-aligning rocker styles.