Edelbrock part #28001 Big Victor 2 Spread-Port 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 app Product Features:3500-8500 RPM RangeSingle Plane Type-4500 Style Flange9.21 in. Front Height, 9.21 in. Center Height, 9.21 in. Rear HeightSatin FinishSpread Port