join the AERA. it costs a lot of money but if you are a serious builder you need to. info on all engines ever made. nothing like it on the web. will cost you 1000.00 a year however to belong but well worth it. no book you buy is anywhere near the AERA as far as info. No One. Most NASCAR teams belong
http://aera.org/
We are members. Every company building motors should belong.