El Viejo,
The main benefit of an RV cam is that it gives you more torque (and a little more horsepower, too) than a stock cam, and generally in the same RPM range as the stocker. They're designed to work best in an rpm range of 1000 - 5000 rpm. Most of them have between .480" and .500" lift, and advertised duration between 250-260 degrees. They give you a normal idle, and pull very stongly from just above idle to the upper rpm limit. They also will give you good fuel mileage if you aren't TOO much of a leadfoot, and they have a strong vacuum signal. All in all, they're a great street cam. Used with headers and an aftermarket intake manifold, they put out an impressive amount of torque when you put the hammer down. They're also great if you're towing a boat or trailer. LOTS of low and midrange grunt. Most of the aftermarket cam grinders will specify that a particular cam is an RV cam in their catalog or web site, but if they don't, you can tell from the duration and lift specs.
