Villian is pretty TAG around 19/16 in SB. He has 466 and I cover.

UTG and MP donks limp, I make it 24 in CO with [Kd], SB makes it 86...I only call. People's 3betting range here is pretty small: AK/AA/KK/QQ and maybe TT/JJ, so I see no reason to push here against that range since it lets the ones I'm beating get away and I prolly only get called by the ones that are beating me.

Flop [7d][3s] He leads 136...I call. No reason to raise here, again, since I think I only get called by what beats me...I'm planning on folding to a turn push.

Turn He pushes his last 244, I fold...Thoughts?

The reason that you push the flop even though alot of people think you will only get called by hands that you beat (and I disagree with that)...is so you dont make a big mistake and fold the turn. I think folding here is a mistake but whats worse is whan an ace hits and you fold to his shove and his JJ beats you...or a Q hits and he shoves and you fold to his AK.

Just shove it in and put the tough decision on him.

Ice, the better solution is to just never fold the turn with these stacks and pot size.
Then calling is fine because when the guy is behind he's drawing to 5 outs if not 2 and he can bluff the turn.