I ran the Holley intake on the mildly built 401 in my Cherokee Chief with an HEI, Hedman headers, Napa MPG cam (identical grind to Performer AMC) and Holley 570-cfm Street Avenger carb. The engine ran GREAT! I could advance the timing to about 20* with no ping and it had gobbs of power all through the RPM range for a Jeep. The engine is still running around like that 5+ years later, down in Ohio. Current owner is on the IFSJA.org forums.


EDIT - I also was running the Torque-Plus intake Gaskets with this intake, as the stock baffle on the bottom would hit the valley pan gasket. www.torque-plus.com

Sincerely,
Greg Taylor :) <><
Oxford, MI