Sandy, I had a distributor corroded to the front cover one time. It was so bad I ended up braking it trying to get it apart. If that is your problem then be careful.
oaklyss, I lost track of what one we put in our automatic car but it is one of the Crower cams. I got it from D&D as a kit with the lifters and timing set. His kit number is 50228CK. I am not overly impressed with it but not sure if that is because of the automatic transmission or not. I told him I wanted the closest to stock he could possible get and I fell it is less then stock. I do believe that is partly because it has thicker head gaskets also with the Egge pistons so I know it is much less than stock compression also. Now, the 63 4 speed car I got and sold a couple years back. It had the next level cam (again, not sure what that is) and it was MUCH better. I am sure the 4 speed had some to do with that and also D&D built that engine so I have no idea what the compression was. Not sure any of this helps but thought I would post it.
My 4 speed car I am using an NOS cam and NOS head gaskets with the original pistons so it will be exactly stock