Alright guys, I've been really wanting to increase the power out of my 5.3. I'm waiting close to 400 hp as possible. I will be spraying nitrous as well but I want as much as power possible. Thinking of a Vinci performance The Trucker cam, going to 1 7/8 exhaust with speed engineering true dual 3 in with 243 heads and all rebuilt. Or should I just get a 6.0 and use that to start??

 

6.0 = more hp/tq increase across the board over a 5.3 no matter what the mod list is.

So i vote 6.0 then build

 

6.0....mild cam youll be at 350 to wheels easy..na!!