Feel the Torque Maximize your HP Dyno Testing LEARN MORE Plenum Spacer Shootout Average Gains (2K RPM to Redline) TORQUE [lb-ft] + 0 MD Basic 5/16" Spacer + 0 MD Basic 1/2" Spacer + 0 Crawford Cast Plenum + 0 Kinetix V4 Plenum + 0 AAM Angled Spacer POWER [hp] + 0 MD Basic 5/16" Spacer + 0 MD Basic 1/2" Spacer + 0 Crawford Cast Plenum + 0 Kinetix V4 Plenum + 0 AAM Angled Spacer Full Comparison 3rd Gear to Redline