Bill wrote in
:

What is our heavy lift capability now? Excluding the Shuttle? I think
the Saturn V could heave 100 tons into low Earth orbit, 52 tons to the
moon. Is it also true that the Apollo CM could have been modified for
six people just for transfer to orbit and back?


Titan is no longer available; it was replaced by the
Delta IV Heavy which has a payload of 25 tons to low
orbit. This could almost be doubled with upgrades;
with major upgrades payload might increase to 90 tons
or so. Atlas V Heavy could be used in the same way.

http://www.boeing.com/defense-space/...bls/flash.html

Shuttle components could be used without the orbiter for
heavy lift as well; this is called Shuttle-C or Shuttle-
Derived. Payloads would be similar to the uprated Delta IV
or Atlas V.

I don't know exactly what was proposed for Apollo; after
Shuttle other manned vehicle will take over the role
of transporting humans into space. They might resemble
an enlarged Apollo capsule. Or not.

--Damon