Zac, $8 Million-Dollar Man!!!

You go, boy! Life & Style reports Zac's asking for a hefty $8 MILLION to appear in HSM 4!

Zac went around talking big after HSM 3 negotiations. He was all like "I totally think my time with High School Musical will be over after the #3 drops." And then Disney was like, "Oh, damn, we need that kid, what kinda dough's he gonna ask for to do #4? And then Zac was like, "$8 mill will be fine if you want my hot a** back in your movie."

HSM 3 drops Oct. 24 -- let's see how much money Disney makes of this one -- they'll probably be begging at Zac's door on Oct. 25th!