Region Warrior, It is a 4 speed, I took the trans completely out and still had the noise. It is getting louder! The exhaust is tight. This is a LOUD noise, not like a little ticking noise like lifters or rocker arm noise. It sounds like a bucket of bolts but still sits and idles like a new car!! Now that I have gone this far there is not much left to take it out and tear it down. I am still wanting to get a pro to listen to it before I unhook everything. The more I worked on it the more it sounds like a rod noise. But like I said I have never flatten out a cam so I don't know that noise, could be that, don't know. If a cam is flatten will it idle so smooth? If it is rod bearings, would that not be the fault of the machine shop? It is one thing to beat one and then have this problem, it is another to have this problem by just breaking it in and not even driving it. If they don't back up their work I will find someone else and probably go back in with a CHEVY SB! Any help on this is appreciated! Thanks Eldon