Feel like my 440 should be faster

Step one is to determine if what you have is performing about the way it should. None of us can know this based on the info you have given us.

Second, you really need to get clear on what exactly you want from your car. Few people actually go to the track to achieve meaningful performance results. Instead most folk seem to be happy with simply melting the tires from a 30 mph roll. The path you take for best track performance verses smokin the tires will be different.

For best track performance based on your list, the first thing I would probably do is heads/compression. Do a cranking cylinder pressure test. This information will be very useful.

If it’s a spinning the tires goal, get a smaller cam first, then maybe a gear change.