Air Flow Research BBF 3817 Bullitt CNC Cylinder Heads with 295cc Intake and 75cc Chamber

The Air Flow Research BBF 3817 Bullitt CNC Cylinder Heads are designed for high-performance big block Ford engines. These assembled heads feature 2.250-inch intake valves and 1.760-inch exhaust valves, providing excellent airflow for increased horsepower and torque. Crafted from lightweight aluminum, they offer durability and reduced engine weight, making them ideal for performance applications. The heads incorporate a 75cc combustion chamber, optimizing compression ratios for enhanced power output. The CNC-machined finish ensures precise port shaping and valve seat contact, contributing to improved efficiency and fuel economy.

These cylinder heads are suitable for street and race engines, offering reliable performance and easy installation. They are compatible with various Ford big block engines, and their design supports high-lift valve springs, such as the 1.625-inch springs included. The combination of advanced CNC machining and quality materials ensures longevity and consistent performance under demanding conditions. Whether upgrading an existing build or assembling a new high-performance engine, these heads provide a significant boost in airflow and overall engine capability.

Designed without air restrictions and suitable for general use, these heads are a versatile choice for enthusiasts seeking to maximize their engine's potential. The pair includes both heads necessary for a complete installation, ensuring a straightforward upgrade process. Their robust construction and precision engineering make them a reliable component for serious performance projects.

Features:

• Assembled aluminum cylinder heads for durability and weight savings

• Designed for big block Ford engines with 2.250-inch intake valves

• Includes 1.760-inch exhaust valves for optimal airflow

• CNC-machined ports and seats for precise aerodynamics

• 295cc intake runner volume for increased airflow

• 75cc combustion chamber for higher compression ratios

• Supports high-lift valve springs with 1.625-inch diameter

• Pair includes two heads suitable for complete engine rebuilds

• No air restrictions, ideal for street and performance use