That was covering the majority of the Mopar sizes.Donk said:bigger physical size to fit the bigger inches, factory at least. You can build a small block bigger inch than a big block. Dodge also has two different common big blocks, "B" and RB". The RB's have a higher deck height to accomodate a longer stroke.
Common small blocks ("A" or "LA" engines) include the 318, 340, and 360
B series includes the old 361 and 383 and 400
RB includes 413, 426, and 440