I decided to rate your team. I like to divide my ratings into three sections. These sections are Typing, Synergy and Movesets. I don't really have anything else to say so I'll begin.
Typing: You have some pretty big weaknesses on this team. A x2 to flying, x6 to rock, x2 to water and x4 to psychic. This is bad, if you meet a lando with stone edge he can do some big damage, or a MMetagross with zen headbutt or many others. Usually you try and create the team around typing to make sure you don't have big weaknesses like you do.
Synergy: I'm gonna be honest, sun teams don't work. Really most weather teams are pretty easily countered. But I'll look at the synergy anyway.
I see 4 sweepers and a tank. You want some other pokemon. walls, scouts and pivots. You have one other spot on your team, but you need some more roles.
Movesets
Infernape: Power-up-punch doesn't work, especially on this moveset. You are using it to set up, so have it have really strong moves imo. Give it flare blitz and Close combat as it's attack moves. It's EV's are a little odd to set up. I might give it more defense and HP ev's.
Zapdos: One big mistake on this. You don't have roost. Switch Steel wing to roost to help keep zapdos alive.
Venusaur: Your using him more as a sweeper, which is ok, but you need at least one wall and venusaur is a good wall. I might consider switching him to a wall set. If you are keeping him as a sweeper he is good.
Charizard-Y: Focus blast or roost instead of air slash. Everything else is good though.
Snorlax: I might give it an assault vest instead of leftovers. He is using all attack anyway. Fine moveset, the only suggestion on it's moves is to consider switching return to body slam.
I'm gonna be honest with you. I would scrap this team. Sun doesn't work in OU and you have some big weaknesses that one pokemon can't cover. Your movesets are pretty good.
Hope this helps and if you have any questions please ask in comments!
