8-400 badge...what exactly does it mean?

[05crewcab]

Just want to make sure of something. the 8-400 badge came out in 71 for the big block trucks even though they were infact 402ci, and, eventhough the '70 trucks were 402's, they still got the 8-396 badge correct?

And, the small block 400 was never offered in the pre-'73 trucks, true?

I ask because I might buy this truck below (for the motor and tranny, and onl y if I can get it cheaper) and can't quite make out the size of the motor in the pic, and I think it is a '72, not a '70:

http://minneapolis.craigslist.org/hn...955810491.html