Fun fact: Hecarim can have over 429 AD without building AD.
Just for fun, I went into a custom game to see how much AD I could get on Hecarim without actually building any AD items. I built no duplicate items, had a blank rune page, and no masteries.
I built:
(+20% move speed)
(+115 move speed out of combat)
(+75% move speed)
(+10% move speed)
(+60 move speed)
(+7% move speed)
took
(+45% move speed)
Used
E (+75% move speed)
This resulted in 1399 movespeed, which with his passive, gave me 429 AD without building a single AD item. With homeguard (+150% movespeed) it would have been 471 AD. With duplicate items, scuttle buff, any of the various champion buffs that give move speed (zilean, karma, galio, etc), cloud drake, or whatever other ways you can buff move speed, it would have been even higher.
No, this isn't a viable build by any stretch, and obviously no one should do it. It's just a bit silly that a champion can get that much AD without building any.
Okay.
in place of lich bane.