Complete Engine Building Tips and Specs for Ford Vehicle
Part of content: Engineers call it “thermal efficiency.” MODIFICATION TECHNIQUES Common techniques to increase CR include: (1) Installation of a thinner head gasket. (2) Installation of “domed” or “pop-up” pistons. Check for adequate “piston-to-valve” clearance at TDC. Camshafts with more overlap require more clearance.
he descriptions within each group of cams show performance characteristics and basic modification recommendations required to achieve desired performance. DURATION PERFORMANCE ENGINE/VEHICLE USAGE (SAE) CHARACTERISTICS AND MODIFICATIONS 270-290. Good idle quality Use with stock or slightly modified engine, and low RPM torque.
