I am rebuilding my 97 fxdwg. I got the heads ported and polished, jugs bored out, new pistons and using an Andrews 23 cam. I am pretty good with carbs and I started thinking, maybe a smaller slow jet will be the way to start seeing as I have higher compression, most likely better vacuum than before and therefore will pull fuel in way better. AM I just over thinking this? I have a 48 in there now and it ran cherry with the stock cam, equal length V&H straight shots and a high flow air filter. Any thoughts? Also it had a 175 main jet and did pretty well to. Trying to nail this first time through so I don't have to disassemble and reassemble to many times.

 

Your certainly in the ballpark there.

I would leave the 48 alone and just up the main jet to a 180-185 and see what the plugs look like after testing.