Rep Power: 605

so my dad wont let me play w/ the engine of my ls1 so i was hopin sumone cud help me think of some sneaky ways to add hp but if my dad took a quick peek under the hood he wouldnt notice. easy istalation prefered.

 
Rep Power: 0

That's hard with easy installation part of the list. There are cams made to sound stock and even work especially with the stock exhaust manifolds.
Based on your cars year you could do a lid, LS6 intake, heads(hard install), sleeper cam, and some rear end gears (hard install).

 
Rep Power: 605

i was thinkin bout a lid since they dont look to different from one another. what kind of programmer would be nice. like one that i can set on max performance but i can also set on nicer milage

 
Rep Power: 1069

nitrous sneaky pete system

 
Rep Power: 0

lol and if it blows up dad will be mad eh?

 
Rep Power: 666

+1

 
Rep Power: 605

ya ill just be like "dad those bottles arent mine" or "I accidentally dropped a shirt in the gas tank that was on fire" haha

 
Rep Power: 866

put gears in the car. he would never notice unless he knows a damn thing about cars and drives it. they will be a lot of fun too

 
Rep Power: 727

Whatever you do, DONT use a chip or programmer. Nobody makes a good chip or programmer for our cars at this point. All they do is lean out the mixture, give you a few horses, and kill your motor when you start adding mods (all chips and basic programmers are based on stock motor airflow and stats, meaning when you add more horses, and air, since it leaned out your fuel mixture.... boom.).

 
Rep Power: 628

how do different gears benefit? What happens with low or high gears?

 
Rep Power: 727

The gear ratio of a car determines how fast you go through the gears. A steeper gear with a lower gear ratio will go through the gears faster and let you achieve your optimal powerband faster.

In other words, you accelerate faster, but on the highway, you'll be running higher RPM's than stock ratio. Keep in mind, depending on how steep the gear you decide on, the more gas you're going to use.

 
Rep Power: 618

will he let you change exhaust and intake and throttle body.
a full exhaust and intake will not hurt your car and will see some gains.