Hi Colton,
As Martin says, this has been discussed in hundreds of posts. I too had the same question and one of the best answers I found was in a post by Denny Graham titled Passenger Side door Logic . If you choose to watch the video, you may want to skip close to the end. The video is mainly about the principals of vacuum and vacuum shifting and is 11:08 minutes long and it has adds.

Cruisin' in the Passing Lane
Former owner of a 1954 3100 w/Hydra-Matic
"To know what you know and what you do not know, that is true knowledge." - Confucius