Edelbrock Part # 71054 Performer RPM FE intake manifold is designed for high-performance street 390-406-410-427-428 c.i.d. Ford FE V8's with standard 390-428 c.i.d., 427 low/medium-rise or Edelbrock Performer RPM FE heads. The dual-plane constant cross-sectional area design builds low and mid- range acceleration while optimized runner paths make exceptional top-end horsepower. Has provision for adding the PCV or breather flange at rear. No exhaust crossover passage. This manifold offers our long lasting bright chrome like EnduraShine finish that matches chrome and polished accessories.