Glossary “high speed steel (HSS)” Definition:
An extremely hard alloy.

Glossary “high speed system” Definition:
A carburetor main-metering system that supplies fuel to the engine at speeds above 25 mph (40 km/h).

Glossary “high speed inlet air system” Definition:
System designed to change airflow characteristics in the intake manifold at higher engine speeds to provide improves torque characteristics.

Glossary “high speed shake” Definition:
Vibration that produces a visible shake and pumping feel in the steering wheel, accelerator pedal, seat, and floor. Common vehicle speed range above 45 mph.