Hey guys, I'm new to the Ford world and have been trying to find any info on an issue that just came up for me. I just bought a 66 Galaxie 500 convertible. It has a 302 and the factory C4 transmission. Driving it home it was doing fine. I drove for about an hour, stopped to eat, and drove for another 15 min and traffic stopped. When I started back to moving, it went through first and second fine, but then when it shifted to 3rd it went like it was in neutral. I tried popping into neutral and back to drive, slowing down and trying to go back through 1st and 2nd to get it to pop into gear, but nothing worked. The fluid is topped off and nothing smelled burnt. I drove it the remaining 20 min home in 2nd with no issues. Reverse works fine as well. The previous owner had no knowledge of any tranny issues. Is this an issue that points towards a full rebuild or maybe something simple?