There is no REplacement for DISplacement. Simply put. Every engine has it's +'s and -'s, but the 440 is an all around great engine. The 400 might be better is some stroker applications, but if I wasn't going that route, I'd just get a 440. Carl ----- Original Message ----- From: "clay-deb" <clay-deb@xxxxxxxxxxxx> Well darn, I have been following this thread with interest and waiting for the 440 owners to rise up and put this 413 nonsense to rest, . I guess its not going to happen. Should I be checking in to a 413 swap for my 67 ? ;) Clay Smith 67 Crown Coupe