This model has the square bore flange bolt pattern and can replace Holley, Edlebrock, Carter AFB, and Auotlite-style carbs with a 5 3/16 in. x 5 5/8 in. bolt pattern. Spreadbore-style intake manifolds will require an adapter.
Special Attention
This carburetor is designed for extreme off-road, off-angle use. Due to its design, it is not recommended for street driving or towing applications because rich conditions and poor fuel economy will be experienced.
The carburetor gurus at Holley built these carbs with you truck guys in mind. Features include maximum low-end torque and horsepower output, steep angle idle, spring-loaded needles and seats, four vacuum ports, and off-road vacuum secondaries. You'll have exceptional fuel control over rough terrain. Their one-piece fuel bowl vent tube eliminates fuel spillover during extreme maneuvers, and their unique metering block is designed for flood-free operation.
