Do you degree your cams? I have had very good luck with the old 484's & 509's
Not all of them. I've tossed them in straight up on a Cloyes chain many a time. I have seen guys try running them both advanced/retarded before, but they were starting from a timing set stamping, not actually degreeing the cam at all. Some have worked, others have been pulled and degreed, the stock "straight up" position isn't always "straight up".
