Shortblock Vs Longblock -- Difference??

[onlyinajeep726]

Can someone explain to me what the difference is between a longblock  and a shortblock, or are the terms used interchangeably to describe the same thing?  I've seen both terms used and I don't understand.  I thought a 4.0 was a 4.0.

[gogmorgo]

Long block vs short block has nothing to do with what engine it is.

 

Both are terms describing how assembled they are. Basically, a short block is missing the head(s) and a long block isn't. A long block still isn't typically a complete engine, though.

 

http://en.wikipedia.org/wiki/Long_block

[onlyinajeep726]

Ok, that makes sense.  Thanks for clearing that up.