Engine Intake ManifoldEdelbrock part #28002 Big Victor 2 Spread Port Tall Deck intake manifold is designed for large cubic inch or high rpm drag racing big blocks with Edelbrock Big Victor, Dart Big Chief or Brodix Big Duke cylinder heads, this manifold has an average runner area of approximately 4. 75 sq. in. The port exits have been reduced to accommodate the wide variety of intake port sizes and require port matching. The runners have a minimum corner radius of . 500"