I pulled a single car trailer with a late 70s Dodge 3/4 ton van, but it wasn't a small block, and it had 3:55 gears. I think the 318/2:94 gears towing something will be a bit of a challenge, but as long as your not in a hurry, and have a good trans cooler, it will get the job done.

My buddy pulled a car trailer with a dirt track car all over with a 70s Dodge truck with a slant 6 auto! He wasn't very fast, but always got where ever he was going. Gene