A LS376/525 is a LS3 crate engine offered by GM with an ASA camshaft installed to increase power to 525 horsepower and 489 lb-ft torque. This Monte Carlo just so happens to have one along with a T-56 Super Magnum six-speed transmission. It was built by GM Performance to show off its crate engine tech and made its debut at this years Power Tour. This car is so immaculate I assume it was a complete frame-off restoration. Just look at that engine bay.