For 3500-8500 RPM high performance engines. Not for sale or use on pollution controlled motor vehicles. For racing use only. Extended Constant cross-section of runners. Great mid-range torque for short track power. Improved throttle response for 60 feet times. Direct line of sight flow path maximizes flow. For 4500 series carburetors and 23 degree heads. Highly efficient cloverleaf plenum design. Runners have large 3.20 square inch cross section. Not for sale or use on pollution controlled motor vehicles. For racing use only.

Product Features:

• For 3500 to 8000 RPM High-Performance Engines
• Extended Constant Cross-Section of Runners
• Great Mid-Range Torque For Short Track Power
• Improved Throttle Response For 60 ft. Times
• Direct Line of Sight Flow Path Maximizes Flow
• For 4500 Series Carburetors and 23 degree Heads
• Highly Efficient Cloverleaf Plenum Design
• Runners have Large 3.20 square in. Cross Section