Edelbrock Performer Cadillac ManifoldEdelbrock part #2115 Performer Cadillac intake manifold is designed for 1968 76 Cadillac 472 and 500 cubic inch engines. For either square or spread bore carbs, this is the first intake designed specifically for high performance Cadillacs using standard heads. Like all Edelbrock Performers, this manifold increases torque and horsepower from idle to 5500 rpm. The broad power band is ideal for high performance's street and engine swap applications.