Regarding the other HO, the 400HO engine option; bigchief, I was recently studying what made the a '68 400 engine a 400HO and found that only the manual trans 400HO got a different cam. The automatic still used the 400's cam. Bottom line, the only change I can find for my 400HO w/auto from the 400 is the Long Branches and a different engine code stamp. Do you know of anything else?
