short block vs. long block
long block refers to an entire motor....or at least up to the heads...
if you're looking to build a "healthy" motor, i'd find a good short block somewhere and buy a set of good heads (AFR, TFS, or call someone like lloyd elliot and have him port and polish a stock set)
A short block is the block only with crank, pistons bearing and caps assembled only.
A long block is all of the above plus cam, heads and valvetrain plus timing set.





