Blaziken @ Leftovers
Level: 80
EV: Attack +2
Nature: Impish
Move 1 - Sky Uppercut
Move 2 - Swords Dance
Move 3 - Fire Blast/Flamethrower
Move 4 - Earthquake
This is almost a good Blaziken set, except for Fire Punch. Fire Blast or FLamethrower are way better.
Rayquaza @ Quick Claw ( HM SLAVE)
Level: 79
EV: Speed +3
Nature: Hardy
Move 1 - Fly
Move 2 - Surf
Move 3 - Hyper beam
Move 4 - Outrage
If Rayquaza is your HM Slave, then don't use it on your main team.
Machamp @ None
Level - 78
EV - Defence +2
Nature - Bashful
Move 1 - Cross Chop
Move 2 - Rock Slide
Move 3 - Bulk Up
Move 4 - Counter/Light Screen
"Don't teach Pokemon two attacking moves of the same type." Machamp has 3 Fighting moves here, which is totally a waste. Cross Chop is best so keep that. Bulk Up for attack boosts and Rock Slide for Flying types. The last move is a puzzle. Machamp can't learn Shadow Ball and getting Hidden Power Ghost in-game is near impossible. Counter and Light Screen both work, but they require breeding (or you can get Counter from a move tutor).
Blastoise @ Leftovers
Level - 78
EV - HP +4
Nature - Calm
Move 1 - Surf
2 - Ice Beam
3 - Rest
4 - Earthquake
Surf and Ice Beam should be your main attacks. Rest because Blastoise is a very defensive Pokemon. Works even better with Leftovers so you can heal some HP while you sleep. You can keep Bite, but it won't do much. Earthquake is a better option for Electrics.
Groudon @ Shell Salt
Level - 76
EV - ??????
Nature - Sassy
1 - Earthquake
2 - Rock Slide
3 - Fire Blast
4 - Bulk Up
Why did you remove Earthquake? That's Groudon's best attack. Reteach it please. Rock Slide again. Also Shell Salt doesn't do anything. Shell BELL does.
Altaria @ ........nothing
Level - 76
EV - Speed +1
Nature - Quiet
1 - Dragon Claw
2 - Fire Blast/Flamethrower
3 - Rest
4 - Perish Song/Sing/Ice Beam
What? Altaria can't even learn Rock Slide. O_o And both Dragonbreath and Outrage are pretty crappy moves. Dragon Claw is what you want. Give it another Fire move. Rest takes advantage of its Natural Cure trait. Perish Song works, but also consider Sing or Ice Beam for other Dragons.
Rate - beaten elite 4 32 times with this team
Don't need to know that. The Elite 4 is easy to beat anyways, even with Lv. 50 Pokemon.
Sudowoodo 45^ in daycare and Hitmonchan lvl 40^
Don't bother with Hitmonchan. Machamp is way better. Sudowoodo isn't that great either, but at least you can replace Rayquaza with it.