The HAMB can be hard to deal with because it is so big and diverse, but the A-B folks have done a pretty good job of centralizing much of the information: There is a Monthly thread started every month that cumulates much of each month's discussion and provides links for other good 4 cylinder material. Once you lock into that series of threads life becomes easier...here's the January 2014 one, which contains at the top quite a few archive worthy links:
http://www.jalopyjournal.com/forum/s...monthly+banger
Model B stuff always needs a bit of looking, as the engines are considered orphans by both the Model A and the V8 people...no momma, no poppa, no uncle Henry.