[Perez]

wanting to upgrade from my stock cams and heads.. got a 2006 5.3 silverado. all input wanted.. thanks

 

[hrcslam]

Here's a Link or two

Link #1
Link #2

There's a few discussions about the 5.3L at LS1Trucks.com, you should check it out.

Here's a really good link for information of the GEN III LS series engines. The 5.3L wasn't called an LS, but it basically is.