6', 199lbs here. I do 5 protein shakes a day + 3 meals and limit my cardio. Putting on clean, lean muscle can be a real struggle.
Lean muscle is tough - that is why bodybuilders fatten up in the off season. A training buddy of mine used to eat KFC all winter and fatten up a bunch then for showtime he would rip off all that fat to reveal an unbelievably dense striated physique.
I have three shakes a day (75 grams of protein per shake) in addition to my other protein intake through regular food (i.e. fish, chicken and lean beef).
To answer the question of how to get huge that provokes a series of questions:
What do you define as huge? Guys say I am huge at 240 pounds - I disagree - when I trained beside Greg Kovacs one day he was 396 pounds - that's huge
I am assuming you want to get huge drug free (I have been on the dark side and it IS NOT worth it)
What committment level do you have? Takes a lot of hard work and devotion with little interference
Timeframe to do so? You are looking at years - I was once told that a drug free lifter can put at most five pounds of lean muscle on a year.
I can help guys with this but getting big is tough - you have to eat, train, eat, eat, eat - I used to eat well over 300 grams of protein a day. Guys getting ready for the Olympia were eating over 500 a day - I don't think people realize how hard even gettin 200 a day can be plus you stink like crap all the time.