Thought I would drop a line and let you know that I have been using the K cam in a 1987 b230f w/ an automatic for a couple of years and agree with your observations except that in my case the idle is a bit uneven in neutral- otherwise it is great. Very good throttle response and it loves to rev. My fuel mileage is quite good, although the overdrive really helps.We have emissions testing up here in Vancouver,B.C.which is quite stringent and the wagon passes easily. I replaced the original rear end (3.31) with a (3.91) and it makes a noticeable difference. The K cam was designed to work more efficiently at higher rpm. I drove it for a summer with the 3.31's and since it is hilly out here (to put it mildly) it was a dog. Sometimes second gear felt like drive.If you live where it is flat it would make a great freeway cruiser. By the way my Volvo is a 1981 265 gle.