Camaro SS models with an automatic transmission also received a 6.2L V8, but not the LS3. That engine, the L99, is nearly identical to the LS3, but with some key differences. Specifically ...

While the LS3 V8 runs all eight cylinders continuously, the L99 uses Active Fuel Management (AFM) technology to shut off four cylinders under light load conditions in order to improve fuel economy.

Fast forward to 2009 when the new Camaro rolled off assembly lines with the passenger-car version of the L92 for automatic models, the L99, as well as the LS3 for stick models, Mast acquired ...

See All 14 Photos Taking a page from Corvette, both the Camaro-spec LS3 and L99 get rectangular-port cylinder heads featuring offset-rocker technology and big 'ol valves: two per cylinder ...

The LS3 is offered in the Pontiac G8 GXP and is also the standard V-8 engine in the new, 2010 Camaro SS. The L99 version is equipped with GM's fuel-saving Active Fuel Management cylinder ...

My only problem with the auto v8 is it comes with the L99 v8 engine and not the legendary LS3, the difference between the two is the ls3 has a more aggressive valve clearance, a more aggressive ...

Indeed, these are great perks to rub in the face of your TR-6060-equipped counterparts, but it doesn't change the fact that the L99 packs 26 fewer horsepower (400 vs. 426) than the LS3.

If rowing a shifter and working a clutch aren’t your bag, your six-speed automatic SS will come equipped with a similar 6.2-liter V-8 L99 engine. Unlike the LS3, the L99 has fuel-saving cylinder ...

The L99 is like the LS3 but with flex-fuel capability and cylinder deactivation. The 6.2-liter aluminum block and head make a claimed 400 hp and 428 lb ft of torque in this application ...