Article: Camshafts 101

[Init2winit]

So, what exactly is a "3/4" cam, and a "full race" cam? Someone in their 80's must have wrote that part of the article.

[X-Runner]

So, what exactly is a "3/4" cam, and a "full race" cam? Someone in their 80's must have wrote that part of the article.

Look at the difference in the lobes. Holds the valve open longer.

[Init2winit]

Look at the difference in the lobes. Holds the valve open longer.

So, how do you know if one is a 3/4, or a full race cam? Will these cams work with double hump heads, and "pop-ups"?