Honestly, I'm not really sure. The axles should be in this week...being shipped from AZ. For some reason, I thought the 66 axles were going to be birfields like my dad's 69 and never thought to look into it. Now I'm kinda bummed since I wanted the birfields. The ball and claw is a pretty weak...
I've been lurking on this site for quite some time. I bought a 1966 from a guy who was torturing the poor rig so (unfortunately) I have a lot of work to do. He had put Jeep axles on it which has been a nightmare and I was finally fortunate enough to find some original 1966 FJ40 axles in good...
I know this thread is from 2010, but it's a great help. I'm rebuilding my 1966 fj40 and have been wondering about this for a while now. Thanks for the great tutorial with pics.