270 H.P. & 215 Lb/Ft of torque. There is no easy way to increase power. Dual exhaust system will help somewhat. Free flow air filter will help at high rpms, but not much. You are pretty much stuck with the stock power without making internal engine modifications. Of course you could install Nitros if you want instant power but at a cost in reliability and possible engine damage. Get a programmer. They can be kind of expensive but its easy and you can tune the computer to how you want it.
295 horsepower
305 horsepower
270
how much horsepower does a 2004 Chevy silver z71 have with a 5.3 liter v8?
I believe that's 300 horsepower in the Silverado and 320 horsepower in the Tahoe / Suburban
10,000,000 horse power
330
195 HP
Advertised Horsepower is---245HP @ 4000 RPMs.
285 horsepower
from the factory the 5.3 liter Chevy has 330 horsepower at the crankshaft it has about 290 at the tires depending on gear ratio
367 HP