Well, the Hudson has a Ford 460 / C6 combo. I've been working on this car a long time, and jsut got the car running 2 weeks ago, and am still trying to shakedown a few items... The trans I had for the car turned out to have a bad pump, so I went and bought a used C6 from a junkyard and installed it last week. I took the car for a drive last Thursday, and heard what i thought to be valve clatter at idle. I thought this strange as the 460 has positive stop rockers and Hydraulic lifters. Friday night I took the car for about a 40 mile round trip. I noticed that under acceleration, there is a very loud and distinct clicking sound coming from the front of the trans area. Almost sounds like a rod knock, or perhaps a loose torque converter nut hitting the bellhousing or something. I also noticed that the car will "clunk" when it shifts into gear, and from first to second, and second to third. It's not a super loud noise, but sounds similar to a bad U joint. I know the Ujoints are good, I just had the driveshaft reconditioned and shortened. I pulled the valve covers off and double checked all the rockers, they're fine. I dropped the pan on the tranny, looking for any sign of metal shavings, dirt that might clog the pump, or anything...there's none. ATF is clean and the screen looks brand new. I'm beginning to think I might have a cracked flexplate. Has anyone ever had a flexplate crack, and if so, does it sound like what I am describing? Would a cracked flexplate cause sloppy shifts too? Any ideas? I've about exhausted every other possibility (I think), and I'm just wondering if there is anything I'm missing before I pull the f@$&ing transmission out of the car again... thanks.