All About Camshafts - Value Lash

Your Engine's Brain And Personality For A Winning Combination

By William Denish, Photography by William Denish

LOBE SEPARATION ANGLE CHARACTERISTICS
CONDITION	NARROWER SEPARATION ANGLE	WIDER SEPARATION ANGLE
Intake Event	Starts & Ends Earlier	Starts & Ends Later
Exhaust Event	Starts & Ends Later	Starts & Ends Earlier
Valves Closed Simultaneously	Increased Time	Decreased Time
Overlap	Increased	Decreased
Power Band	Narrower & Peaky	Wider & Flatter
Low Speed Cyl. Pressure	Higher	Lower
Low Speed Torque	Increased Potential	Decreased Potentiall
High Speed Cyl. Pressure	Lower	Higher
High Speed Horsepower	Decreased Potential	Increased Potential
Cranking Compression	Increased	Decreased
Detonation	Higher Potential	Lower Potential
Manifold Vacuum	Lower	Higher
Valve-to-Piston Clearance	Decreased	Increased
Table 3