The short answer: not every 2010 Camaro SS uses the LS3 engine. Some SS cars built with a manual transmission use the LS3 6.2L V8, while most SS models equipped with an automatic transmission use the L99 variant of the same 6.2L V8 with cylinder deactivation (AFM).
Context: When Chevrolet rolled out the fifth-generation Camaro in 2010, the SS badge denoted the high-performance V8 option. Chevrolet offered two 6.2-liter V8 variants that year, paired with different transmissions. This piece explains the differences, how to tell them apart, and why the distinction matters for power, fuel economy, and collector value.
Two V8 options under the SS badge
Below is a quick comparison of the two 6.2-liter V8 options offered in the 2010 Camaro SS.
- LS3: 6.2L V8 delivering roughly 426 horsepower and about 420 lb-ft of torque. This version was paired with the manual Tremec 6060 six-speed transmission, delivering a traditional, high-revving V8 experience.
- L99: 6.2L V8 with Active Fuel Management ( AFM ) and variable valve timing, producing about 400 horsepower and around 410 lb-ft of torque. This version was paired with the 6-speed automatic transmission (6L80) in most market cars, offering smoother, more efficient operation.
In practice, the LS3-powered Camaros from 2010 tended to deliver higher peak power and a more visceral soundtrack, while the L99-equipped automatics offered easier daily usability and better fuel economy thanks to AFM, albeit with a lower peak horsepower.
How to tell which engine your SS has
There are several ways to confirm the engine in your 2010 Camaro SS. The easiest are:
- Check the window sticker or dealer documentation for the engine code: "LS3" or "L99."
- Inspect under the hood for distinctive engine covers and intake/tuning cues that correspond to LS3 vs L99 (AFM-equipped L99 often shows features linked to active cylinder deactivation).
- Verify the transmission pairing: manual transmission generally indicates LS3, while the automatic pairing is typically L99.
Knowing which engine you have helps with maintenance, parts compatibility, and resale value, since the two variants have different performance profiles and optional features like AFM.
Summary
The 2010 Camaro SS did not use a single engine across all cars. It offered two 6.2-liter V8 options: the LS3, paired with a manual transmission and delivering about 426 hp; and the L99, paired with the automatic and delivering about 400 hp with AFM. If your SS has a manual gearbox, you likely have the LS3; if it’s automatic, it’s the L99.