Whats the advantage. (Cams)

Look at a common 360 4bbl cam and a not so common 340 auto cam...same..or? Generally the higher the duration number ,the peakier the power band. The crate 380/360 had a cam that had a huge flat powerband, thats nice in a street car with a low numerical rear. 4sp can do a hotter cam as it doesnt have an AT drag at idle. You can read for days on cam theory, best to just call a grinder and let them know what you have and what you want.