This is a great Manifold designed for competition engines built for circle track and drag racing using 23 degree standard port heads. Ideal for classes that require cast iron heads that require an unported intake manifold.

Product Features:

• Single Plane With Isolated Plenum
• Square Bore Carburetor Mounting Flange
• Isolated Water Cross Over
• Power Band 4500-8500 rpm
• w/Maximum Velocity At Ports
• Crisp Throttle Response