hay im new to this forum i have a 03 silverado with a 4.8 v8 i have a few bolt on whitch in clude s&b intake flowmaster exhaust and superchips tuner i want to make some hp around 400 or more to the tire should i get a bigger motor and swap it out or what are my other options and how much would it run me thanx for the help

 

A nice turbo kit will get you there, easy

 

Ask him how he knows^^^^

 

KB didnt make 400 horse with his 4.8











A turbo will do it.









He made 505 horses.

 

That's why I said 400 would be easy,

 

forged internals

 

4.8s love boost.....wonder how i know

 

Did i miss dyno numbers of the 5.7?

 

one more ? i wanted to trade in my 03 silverado and get a 07 08 silverado ext cab what motor is better 4.8 5.3 or 6.0 thanx again oh and how can i change my screan name

 

better meaning power?

4.8 < 5.3 < 6.0