Intake Manifold Ford Small Block Carbureted Dual Plane SPELAB SPELAB's dual-plane high-performance intake manifold for the small block Ford is ideal for street performance applications. With a design that improves throttle response, as well as power and torque over a wide rpm range - 1,500 to 6,500. It is cast from lightweight aluminum and features a low profile for ideal hood clearance. Additional provisions include nitrous bosses, a rear water crossover with additional ports, and a square bore carburetor flange. Fits Ford small block 221, 260, 289, and 302 engines Features dual-plane design with a black finish Specifications ENGINE BLOCK STYLE OEM Standard Deck CARBURETOR QUANTITY 1 INTAKE STYLE Dual Plane BASIC OPERATING RANGE 1,500 to 6,500 RPM MANIFOLD HEIGHT 4.12" MANIFOLD MATERAL Aluminum MANIFOLD FINISH Satin EGR No INCLUDED Mounting Hardware Water Port Block-offs EGR Adapter Throttle Bracket Adapter Plate Kit Fitment FORD SMALL BLOCK WINDSOR V8 4.3 L / 260 in3 4.7 L / 289 in3 4.9 L / 302 in3 generally referred to as 5.0 L NOTES Will not fit 255, Boss 302, or 351W ALERT This product is legal for off road use and non pollution controlled vehicles (1965 & older); however, it has not been tested or approved by the California Air Resources Board (CARB) for highway vehicles in the state of California. By purchasing this product, buyer agrees it will not be used on pollution controlled vehicles in California, or in a state with similar emissions regulations. FAQ Q1: Which Ford engines are compatible with the SPELAB Dual Plane Intake Manifold?A1:The SPELAB Dual Plane Intake Manifold is compatible with Ford small block Windsor V8 engines, including 260 (4.3L), 289 (4.7L), and 302 (4.9L, commonly referred to as 5.0L) engines. It will not fit the 255, Boss 302, or 351W engines. Q2: What is the basic operating RPM range for the SPELAB Dual Plane Intake Manifold?A2:The SPELAB Dual Plane Intake Manifold is best suited for the 1,500 to 6,500 RPM range, making it ideal for street performance applications. It enhances throttle response, power, and torque over a wide RPM spectrum. Q3: What special provisions does the SPELAB Dual Plane Intake Manifold include?A3:The SPELAB Dual Plane Intake Manifold includes several beneficial provisions: Nitrous bosses for nitrous system integration. Rear water crossover with additional ports for more balanced cylinder head temperatures. Square bore carburetor flange for compatibility with popular carburetors. Q4: Is the SPELAB Dual Plane Intake Manifold street legal?A4:The SPELAB Dual Plane Intake Manifold is legal for off-road use and non-pollution-controlled vehicles (1965 and older). However, it is not approved by the California Air Resources Board (CARB) for use on highway vehicles in California or other states with similar emissions regulations. Q5: What accessories are included with the SPELAB Dual Plane Intake Manifold?A5:The SPELAB Dual Plane Intake Manifold comes with the following accessories: Mounting...