1st of all, here's my current trainning.

1- 5 exercices of pecs and 3 of triceps
2- 5 exercices of shoudler and 2 of traps.
3- 5 exercices of back and 3 of biceps.

I do 3 sets for every exercices.

I try to train 2 days out of 3. Doing approximatly 8-10 reps every exercices. I know I overtrain a little but I take proteins shake and eat a lots of proteins (Around 120-130 per day).

Anyways, I have no problem with my current workout and I've seen considerable gain but my friend came up to me with this new workout routine.

He said that he will completly change up his routine for a month and then come back to his old routine, which is almost exactly mine.

He said its a power routine:

He goes to the gym 4 times a week.
He will be doing 2 differents exercices for every muscles, 6 sets per exercices. 4-6 reps every set.

He says he wont gain any mass while doing this workout but when he'll get back to his normal training, he'll be much stronger, doing heavier weights... And gain more mass than if he didnt do it.

So, what do you think of this? Think it really work?

A couple things from a Professional.

A) You need to work your legs... Chicken leg guy isn't attractive to females. Also when you work your legs your body will release more natural testosterone and you will have better gains all over.

B) Power = speed + strength. If you want to be building power then you should focus on compound movements and explosiveness.

C) If you want to be able to lift heavier weights then you are going to need to focus on stability and stabilizer muscles. It isn't very often that the primary mover is the limiting factor.

D) It sounds like your friend shook the dust off of some old bodybuilding manual from the 80s. Go find some newer material. As a side note, ask 10 girls if they prefer a body builder or an athlete's body. Take the focus off of mass. Stability, Agility, Speed, Endurance, Quickness, Reaction, Time, proper kinetic chaining, and range of motion training will all give you a better body and make you stronger than the body building stuff.

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You can't forget about me, stupid. Everywhere I go ima have my own theme music.

Well thanks for the reply, will be helpful. And as for the leg trainning, I train them but didnt write it. Same for my abs trainning.

More compound movement.
Get more rest.
Look for properly adapted/-able machines, instead of free weights (leaves you free to focus on intensity and technique/proper execution, and less on stabilizing the weights etc.)
You're looking at a short range program with what you have now, (by that I mean that you'll hit a ceiling quickly, and then progressively weaken. Depending on how hard you train.)

...and Check out bodybyscience.net (and if you want to get at training quickly, buy the book, read it thoroughly, and try the method.)