Hi all,
maybe its a silly question so i appologize in advance.
i read that LS1 engine can pull 350HP at the engine and about +-+-320 (stock) at the rear wheel.

what i do nto understand is how people can pull over 350 at the wheel with mods to their cars ?

told you it might be silly

 

Once you start modding the engine (changing intake, exhaust, cam, etc.,) you eventually increase the actual flywheel horsepower of the engine (well over 350 HP). The driveline of the car (transmission and gears) take a certain amount of power to turn (anywhere from 10% - 20% depending) so when you take 350 HP and subtract 15% (for example) you're left with 297 RWHP (rear wheel). BUT, if you have a motor that makes 400 HP, then you'll make 340 RWHP (with a 15% loss). The more mods you do to increase power, the more RWHP you'll see, and eventually you can get more than 350 HP to the wheels.

 

i understand that you lose RWHP with stock stuff..
but if you have the perfect mods how come you exceed the engine HP ?

 

As you mod and RWHP increases, so does HP at the flywheel. As one increases so does the other.

 

Don't focus so much on engine/crank horsepower numbers, because unless you feel like pulling your powerplant and strapping it to an engine dyno, you'll never know exactly what it's making. Wheel horsepower is what's measurable on a dyno, and it's what matters.

The guys above are right, though. Your wheel horsepower will never surpass your engine horsepower (even if you don't know what the exact engine HP is,) since the wheel HP is the engine HP minus whatever power is lost through the drivetrain.

Want to throw out that there's a difference in modifications, too. A lot of mods don't "make" extra power, they "free it up" (usually by removing or lessening restrictions.)

 

Basically, your engine is a big air and fuel pump.

You'll find that most mods. like headers, intake, exhaust, smooth bellows, turbo, supercharger, cold air induction, etc. increase an engine's air flow

More air = more power.