live 120 - call, push, fold?

[iblucky4u2]

Last night I had the following situation and was not sure if I made the right move

blinds 100/200/0

My stack +/- 8,400 villian +/- 9,400

Villan has been at table for 1 orbit, no raises or rr. He limped a couple of times and the onlyu hand he showed was tpgk to take down nice pot. Seemed pretty solid, passive.

UTG I pick up AKs and decide to make a min raise to 400, planning to push any reraise. Folded to villian in MP who makes it 4,000 - folded to me.

I pondered his overbet and figured he either had AA or 88-QQ.

One other factor - yesterday I read a thread on AKs that recommended shoving 100% when reraised in this situation. Still, it just felt like he had AA but....

Please offer advice/analysis.

Thanks