It depends on what pistons you plan on running, I guess. If I was running something that could achieve zero deck height, for some quench, for example, I would deck the block to get there. I would not just arbitrarily deck the block to gain compression. That's better achieved with a piston or head swap, IMO. So for quench, yes, deck the block. For extra compression, there are better ways. Lastly, it's a good idea to deck Chrysler blocks anyway because they were routinely way too tall and crooked, so there's your main reason for decking......if all that made sense. LOL
