[lusktommy92]

well after doing alot of research on my NNBS its got AFM/VVT system on it and you are limited to what cams will go in it...unless you wanna spend 3 times the money and get rid of those features...which you also get more results out a cam swap if you do...but i dont have that kinda money so her is what im doing. well my 2007 Silverado 1500 Z71 is getting a lifter replacement done by the local GM dealer only because they are covering 1/3 of the price..lol anyway while they are in there im having them stick a Comp Cams XFI AFM/VVT cam in and change all the springs to LS6 springs even though it says on the description doesnt require updated springs im still gonna upgrade them anyway...the cam isnt very big just 220/232 @.05 and .500/.500 valve lift with factory rocker arms and a 115 LSA...wont do a whole lot but maybe after a CAI and Custom Tune might get 45-50hp over stock which is plenty on a Stock Drivetrain i think.

 

[2005_Silverado]

is there a question or concern i missed?

 

[00silvyON]

well after doing alot of research on my NNBS its got AFM/VVT system on it and you are limited to what cams will go in it...unless you wanna spend 3 times the money and get rid of those features...which you also get more results out a cam swap if you do...but i dont have that kinda money so her is what im doing. well my 2007 Silverado 1500 Z71 is getting a lifter replacement done by the local GM dealer only because they are covering 1/3 of the price..lol anyway while they are in there im having them stick a Comp Cams XFI AFM/VVT cam in and change all the springs to LS6 springs even though it says on the description doesnt require updated springs im still gonna upgrade them anyway...the cam isnt very big just 220/232 @.05 and .500/.500 valve lift with factory rocker arms and a 115 LSA...wont do a whole lot but maybe after a CAI and Custom Tune might get 45-50hp over stock which is plenty on a Stock Drivetrain i think.