i have a 2003 silverado 4.8 i need some ideas on how to make it faster im going to swap the motor as soon as i save some cash (ls7 zo6 vet motor) but for now i need some suggestions. Im doing dual electric cooling fans headers hi flo cats, im lowering it 1" in the front 2" in the back any suggestions

steve

 

nice exhaust and cia helps along with the fans and good tune and long tube headers

my old 4x4 would run high 15s stock with a 4.8 with fans dual exhaust and cia it would dig in the low 15s

 

Go big or go home, right?

Look into a custom tune and a higher stall TC to get you into your powerband sooner.