The engine for my Barracuda (440) is at the machine shop getting rebuilt. The machine shop suggested a roller cam. It will cost $1500 extra to go with a roller cam. I don't mind the money and like the idea of a roller cam but every brand of cam/lifters I research I find horror stories where the lifter explodes and sends metal throughout the engine. It seems that these problems happen later on (meaning not right after installation) so the failure is the fault of the manufacturer not the user. Not only does the manufacturer not pay for all the repairs, which I can understand but they don't even replace their own faulty part. Since I don't have access to production numbers it is impossible to figure out the failure rate. It could be 1% or 30%. I don't know. So I guess what I am asking is it worth the risk? I will spend an extra $1500 to get maybe 30 extra HP and run the risk of the lifter blowing up. I just don't drive around town. I have driven my car to Ohio (500 miles one way). I have always used Mopar lifters with Flat Tappet cams and I never once in 35 years had a failure. Just curious what others think.