I built my 400 small block see link below....
There is plenty of info on what was done to it....I could had built any motor I wanted but I chosed a small block 400 just because I have heard nothing but great things about it. I have not dynoed my truck yet have not had the free time to do so but I will tell you that it runs hard, sounds awesome and looks terrific...See my build thread......
http://67-72chevytrucks.com/vboard/s...=302855&page=2