Mopar engine differences

Long/Short has nothing to do with size
Short Block = Block with crank cam and pistons, no heads
Long Block = Above with Heads

Modern era
Small Block (Mopar) 273, 318, 340, 360
Big Block (Mopar) 383, 400 440 (426)

Alan
For big blocks you forgot the 350, 361, 413 and the 2G Hemi.