LS-2 engine id help

[John Thompson]

We are new to the LS series of engines. How do I we tell the difference
between 4.8, 5.3 and 6.0 truck engines. Thanks for helping an old
schooler to become a llittle more modern. We have an LS-1 in a '53
F-100. We have hopes of doing another swap, have access to a motor/
tranny but do not know how to identify the cubic inch size of said motor.
Again, thank you.

[Speedy_Gonzales]

welcome.........post your question in the external engine section for help.........good luck !