[Numfar]

I would fold the Turn. As thac said, you need to calculate your pot odds based on what the villain has. On the Turn you are a long way behind his range and maybe have 5 outs to improve but its equally likely that you are drawing dead.

On the River, not a lot has actually changed but you now beat T8 or something like that. I like the c/c on the River because I think your pot odds are now ok. Don't like a lead because he will often fold his T8.