DODGE VAN 318 - 360 -400 - 440 can i use it

The 360 has a longer stroke than the 340, and maybe a larger bore. I don't have the info here at work.

I'm building a 408 Stroker out of a 360 that was once in a van. The older the block, the more like a car motor from that era, I believe. But as stated, you will have to change the oil pan, etc.

I'd pick up a 360 if you get the chance. Probably a couple hundred bucks for a runner. You could also look for one from a land yacht. Maybe a Fury or Polara or similar.