Part Number: 2703. 55-95 SBC Intake Manifold Spread Bore For Small Block Chevy 305 327 350 383 400. PC2013 52013 Dual Plane SBC Intake Manifold 262-400 1955-1995 V8 RPM Idle-5,500. Aluminum Dual Plane Air Gap Intake Manifold 22026 For SBC Chevy 350 Small Block.