towing capacity slant six

This is what I had in mind. In other words "define towing." Do you mean "able to move under it's own power" or do you mean, actually drive down the road without being an almost moving roadblock?

Well said.

I had a 1/2 ton ford with the fuelly 5.0. I would pull a 25ft big block donzi boat with it. IT would do it but hills of any sort were an issue. I would use low range at the boat launch. Bot probably weighed 4500 pounds with the trailer.