An RV cam is just another term for a mild cam. It's basically a cam with a mild grind thats a little more aggressive than stock in lift, duration and lobe centers that doesn't require a lot of modifications that many high performance cams do such as upgraded valve springs, push rods, rocker arms and higher compression ratios. I'm assuming the term (RV) cam came about because many engines installed in RV's had different cam grind profiles for more torque and HP than the cam that would be installed in a regular passenger car engine. Been building engines for years and that's always one of the terms that's been used for a mild cam.
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