The new single plane intake manifolds are designed to provide a broad RPM power band for high-performance street/strip engine applications to a maximum engine speed of 7500 RPM. The carburated manifold has a 4150 flange to work with all mechanical secondary square bore carburetors. These intake manifolds are designed to accept most stock hardware and accessory brackets, but offer performance features like better plenum and runner geometry for improved charge airflow. The isolated design of the air/fuel passages helps to increase charge air density and performance. The intake manifolds are designed for use with 289-347 cubic inch Small Block Ford engines with a 8.2 inch deck height.
Features:
Single plane design with isolated plenum for cooler charge air temperatures.
4150 square bore mounting flange.
Power band: 2500-7500 RPM.
Height: front 5.58, rear 6.40.
Port size: 1.82 height, 1.04 width.
Extra material allows for porting to 2.00 height, 1.20 width.
Accessory ports under the carburetor in 1/8 NPT, 1/4 NPT and 3/8 NPT sizes.
* Ships from manufacturer. Allow a minimum of 1-8 weeks for delivery. Currently, however, some manufacturers are requiring much longer lead times. *
Not 50 state legal for all year, make, model and engine combinations.
This part is legal for sale or use only on non-emissions controlled vehicles or on vehicles where the part is considered a direct replacement for a factory installed part.
The following vehicles are considered non-emissions controlled vehicles:
1965 and older U.S. manufactured California certified vehicles.
1967 and older U.S. manufactured Federally certified vehicles.
1967 and older Foreign manufactured vehicles.
It is against the law to install this part on an emissions controlled vehicle.
The following vehicles are considered emissions controlled vehicles:
1966 and newer U.S. manufactured California certified vehicles.
1968 and newer U.S. manufactured Federally certified vehicles.
1968 and newer Foreign manufactured vehicles.
Product Instructions and Additional Info:
9424H-289SN Instructions0-0 FORD 260, 289, 302 EXCL BOSS, W/8.2 INCH DECK HEIGHT
WARNING: This product can expose you to chemicals including lead and DEHP, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
This item is made to order and is shipped directly from the manufacturer. Please allow 1-8 weeks for delivery. Currently, however, some manufacturers are requiring much longer lead times