I would think so. I'm going from a /6 to a 383 and cant wait to get it in there. I was pricing a 408 build vs a 383 and the difference was negligible. I guess it all depends on what kind of deal you get on the 383 and wether or not its been rebuilt with the parts you want and so on... The one I got was rebuilt with a few miles on it so there were a lot of things I didnt have to buy in the shortblock. The 360 magnum i had was a bare shortblock that needed everything from machining to pistons, crank, cam, etc. So I will actually come out a little cheaper going to a big block.