Speedmaster 1-147-002 Polished Aluminum Low-Rise Intake Manifold Chevy SBC 350

The Speedmaster 1-147-002 is a polished aluminum low-rise intake manifold designed as a direct replacement for 1957-1995 Small Block Chevy 350 non-EGR engines. This permanent mold-cast manifold offers the lowest profile available while maintaining 50-state street legal emissions compliance on pollution-controlled vehicles.

Key Features:

• Permanent mold casting (not sand cast) provides tighter grain structure and superior polished finish with reduced porosity
• 100% pressure tested to eliminate leaks and installation issues
• Designed for spread bore carburetors with included adapter plate for square bore compatibility
• Includes special adapter bushings for 1987-1995 engine applications
• Compatible with stock Quadra-Jet or 500-650 CFM vacuum secondary carburetors
• Direct bolt-on replacement for stock manifolds on 302, 327, and 350 cubic inch V8 engines
• EPA approved for street use in all 50 states

This manifold has become extremely popular among performance street machine and street rod builders who want improved airflow characteristics without sacrificing emissions compliance. The polished aluminum finish provides an attractive underhood appearance while the low-rise design maintains hood clearance in stock applications.

Note: To maintain street legal status when using a square bore carburetor with the included adapter, the carburetor must also be EPA-approved for your specific vehicle application.