. Both of those are THE most common. Sometimes you can get away with one or the other but highly unlikely.
I changed the converter, flexplate, and bolts on my car and drove it about 100 miles. Then we went on a 70 or so mile trip and when I stood on it hard through most of 3rd gear comming up a LONG steep hill, something rubbed and it sounded like I threw a couple rod bearings. I guess it was over 100 mph worth of air under the car made the cover flex enough to make the bolts hit it. I had to pull the cover and tweak it a bit, PROBLEM SOLVED.
Check it out. It's probably just something dumb like that, or a loose bolt.
Don.
It seemed to me the "groove" was to far to the outside and that the torque convertor bolts couldn't actually be removed without removing the entire shield, instead of the small access panel. I am using the thin head convertor bolts.
......Depends on your luck!! They used to be easy to find but no so much now. Small block covers are different on 727's depending on engine, 904's I believe are completely different, and big blocks have 2 bolt circle choices like you have. I think the smaller pattern is more common. Not 100% sure on that though.
so that wasn't a problem. But I don't know that I have any spare dust shields. 