The more I think about it, there may be another reason the 427 was a "race" engine, while the 454 was a "truck" engine. I believe it was due to the cubic inch restrictions placed on engines by the sanctioning bodies (NASCAR,NHRA,etc)in the early days. Thus a "real" race car always had a 427 Chevy, or a 426 Mopar, or a 427/429 Ford, at ALL the major racing events that most people were familiar with (Daytona 500, Winternationals, etc).No one ever saw 454, or 440, or 460 on ANYBODYS fenders or hoods, at any time! No wonder the 427 got the "bad to the bone" reputation, while the 454 languished in the shadows. Just my opinion, but I really think that's what happened.