With runner lengths tuned for peak torque plus the beauty of carbon fiber, Performance Design’s XR manifold delivers max power and head-turning appeal.
Caleb Newman has degrees in engineering, years of hands-on design and development experience at Katech and is now at the helm of Performance Design in Troy, MI. Their latest product is a carbon fiber intake manifold for GM LS7 motors that can increase the output of a stock crate motor by 48 horsepower at 5, 600 rpm. Torque gains of 30 to 50 pound-feet have been documented at between 4,000 and 6,000 rpm.Power increases are considerably higher on race-prepped hot rod and road race LS7s.
The XR throttle body flange can be pre-selected for different throttle bodies and throttle bore sizes. Dual 75-mm throttles support up to 900 horsepower (naturally aspirated airflow), while optional dual 90-mm throttles support over 1,300 horsepower. The intake utilizes production sensors, PCV routing and has charcoal canister and vacuum ports available. Custom configurations are possible if necessary for fitment and function to specific applications.
For more information about Performance Design products, please visit http://performancedesignllc.com/