New revised and updated edition, complete with extra illustrations, of this best-selling SpeedPro title features expert advice on building and modifying classic/retro 2-valve per combustion chamber cylinder heads for maximum power, economy and reliability. Topics include: Horsepower and torqueEquipment and toolsAirflowBuilding a flowbenchValvesUnleaded fuel conversionCamshaftsExhaust systemIgnitionCylinder heads, except 2-stroke.Written by...