Non-EGR. 4500-8500 RPM. Ford 351 W. 9.5 inch deck height. 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. Makes it simple to convert to EFI. Features precision machined injector bosses.