I did some research on my own but am at a loss. I know the gurus on this site will have a solution. Ok so I posted another thread explaining that I’m taking out my cam to get it notched then putting it back in my 383. I’m also upgrading the heads, geometry kit for roller rockers etc. I thought that replacing my timing chain with a similar model and make would be less likely to cause a problem when reassembling the engine. I took some close up photos of the markings on the double roller chain and cam gear. The manufacturer appears to be KCM a company out of Japan that specializes in quality roller chains. The problem is that the motor was assembled back around 1999. As you can see by the date on the cam gear. If I can’t find the same chain can I use another high grade manufacturer and are the cam and crank gears all standard size for the 383? So if it fits a 383 it doesn’t matter what manufacturer and should slip right back on to the gears?