Edelbrock Part # 7105 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.