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wild cams: what does this actualy mean?


KNITERIDER
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reading around iv often heard the term wild cams. now i have a small understanding about cams and how they shift the power band, can alter valves etc but what does the term mean (i know there not wild caught before someone says it!) and why do people do it? and what would its effect be?
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It typically means long duration and/or high lift. It's a complex subject that I wouldn't profess to fully understand and more often than not you only really get the right cam selection by testing on a dyno.
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It's nothing to do with torque, it's about opening the valves. Duration is the number of degrees of rotation between two points of lift (eg 0.1mm). Lift is how far the valve can be lifted. There is more to it than this though, and that is the actual shape of the curve between no lift and full lift, and these figures are rarely specified but very important. You can get cam profiles fully scanned by people like Kent Cams which give you the full profile.
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fair enough, i was just wondering why people put them into cars mainly.

 

Proper engineering isn't about running "hot" or "wild" cams, it's about running the "right" cam for the application. Choosing the right cam really requires development time on a dyno.

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for my mk1 i have a fast road spec cam that has gone into it

 

it is supposed to give the car around 6 or 7 more horsepower and make the engine rev a little bit higher than the standard cam

 

some old escorts have "wild cams" in them where all the power is above certain revs and the car runs really lumpy when idleing but the engine is designed to stay within this rev range when being used for example a race car where the most is being made of the power available

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