Small Block Chevy V8 Crosswind Intake Manifold Polished
The CrossWind design features the identical plenum and runner design as the Typhoon. The main difference is that there is an open area under the plenum chamber. This feature is sometimes called an air gap design. The air flowing under the plenum provides a cooler charge for the incoming air with less heat transfer from the engine. This cooler air charge provides additional power. The CrossWind design is very popular. However, if looks is your main interest, along with more power, the Typhoon might be a better choice because it is impractical to polish the open area below the plenum on the CrossWind.
Polished finish. The CrossWind Manifold is a special version of the 52020/52021. While it is the exact same height, it features an open area under the plenum chamber. This provides for a flow of cooling air which keeps the temperature of the air/fuel charge lower thus producing more power and torque. The interior plenum and port design are identical to the 52020/52021 and will provide somewhat better overall power than the 52020/52021 due to the special air gap style design.