whats the diff.? is one better than the other? please explain.....

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1991 RS LO3
mods: 14" chrome air cleaner, straight-piped after cat exhaust with one chrome dual tip on the left side.
future mods: headers, removing smog equipment, and as many cheap mods as i can find
aol s/n: budman8503

GONE MUSTANG HUNTING.......
BACK IN 10 SECONDS

 

Shortblock is the term used to describe a bare block with the bearings, crank, rods, and pistons installed. A long block is everything else installed up to the intake manifold and maybe beyond.