Depending on the model version, horsepower can be from 490 to 550.
520
552hp
The Gallardo Superleggera has 523bhp. (390kW)
The 2009 Lamborghini Gallardo's engine produces 553 hp @ 8000 rpm.
The 2008 Lamborghini Gallardo's engine produces 512 hp @ 8000 rpm.
The 2006 Lamborghini Gallardo's engine produces 512 hp @ 8000 rpm.
The 2010 Lamborghini Gallardo's engine produces 550 hp @ 8000 rpm.
The 2011 Lamborghini Gallardo's engine produces 562 hp @ 8000 rpm.
The 2013 Lamborghini Gallardo's engine produces 550 hp @ 8000 rpm.
The 2007 Lamborghini Gallardo's engine produces 512 hp @ 8000 rpm.
The 2004 Lamborghini Gallardo's engine produces 494 hp @ 7800 rpm.
The 2005 Lamborghini Gallardo's engine produces 500 hp @ 7800 rpm.