Product Description
The LS3 engine represents GM’s fourth-generation small-block evolution, displacing 6,162cc with a lightweight aluminum block and 10.7:1 compression ratio. Producing 430 HP at 5,900 RPM and 424 lb-ft of torque at 4,600 RPM, this LS-series powerplant features sequential fuel injection and coil-near-plug ignition. Compatible with 2008-2013 Chevrolet Corvette C6, 2010-2015 Camaro SS, 2014-2017 Chevy SS sedan, and various performance trucks, the LS3 utilizes L92-style rectangular-port heads for excellent airflow. Builders seeking complete drivetrain packages should explore our used transmissions including TR6060 6-speed manual and 6L80E automatic options designed for LS-series torque. Discover the LS engine family history. Every LS3 engine undergoes valve train inspection, cylinder leak-down testing, and includes comprehensive warranty protection ensuring reliable performance for street or track applications.
Frequently asked question
What vehicles is the LS3 engine compatible with for engine swaps?
The LS3 engine fits 2008-2013 Corvette C6, 2010-2015 Camaro SS, and 2014-2017 Chevy SS sedan. It’s extremely popular for swaps into classic Chevrolet C10 trucks, 1967-1969 Camaros, Fox-body Mustangs, and older muscle cars using aftermarket LS swap kits and used engines packages.
How much horsepower can a stock LS3 engine produce with modifications?
Stock LS3 easily reach 500-550 HP with bolt-on modifications including cold air intake, headers, exhaust, and ECU tuning. With camshaft upgrades and ported heads, naturally aspirated LS3 builds achieve 550-600 HP. Supercharged or turbocharged setups safely produce 700-1,000 HP on stock bottom end components.
Is the LS3 engine reliable for daily driving and high-performance use?
Yes, the LS3 demonstrates exceptional reliability with proper maintenance including 5,000-mile oil changes using 5W-30 synthetic oil. Many units exceed 200,000 miles without major issues. The aluminum block reduces weight while maintaining durability, and the simple pushrod design minimizes complexity compared to overhead cam engines.
What’s the difference between LS3 and LS2 engines?
The LS3 engine features larger 4.065-inch bore (vs. LS2’s 4.00-inch), increased displacement (6.2L vs. 6.0L), revised L92 rectangular-port heads with better flow, and 430 HP (vs. LS2’s 400 HP). Both share similar external dimensions, making LS3 a direct performance upgrade with improved airflow and power delivery.
Can I pair an LS3 engine with an automatic transmission?
Absolutely. The LS3 engine commonly pairs with GM’s 6L80E 6-speed automatic transmission, which handles 440 lb-ft stock and up to 650 lb-ft with upgrades. Manual transmission options include TR6060 and T56 6-speed units. Browse our performance transmission selection for LS3-compatible gearboxes with warranty coverage.
LS3 Engine – GM 6.2L V8 High-Performance Powerplant
