383 vs 400

I'm looking at 2 dusters one has a 400 and the other has a 383 mainly going to be a street machine is one engine better than the other (don't know much about big blocks and nothing about a 400)
Thanks

The 383 is a great engine, very powerful for its size, The 400 has the biggest bore, larger then a 440, The 400 has a low compression, but it has very good torque, what makes the 400 so popular is you can stroke it to the famous 451, those are torque monsters, I would say, just pick which one you like better, The price vs. the overall condition.