GM LS3
General Motors LS3 series engine build by KMS racing engines with up to 600 Horse power for GT and other race classes
| Engine manufacturer | General Motors | |
| Type | LS3 | |
| Configuration / # cylinders | V8 | |
| Peak horsepower | 600 * | |
| Peak torque | 670 * | |
| Maximum RPM | 7000 * | |
| Displacement | 6800cc | |
| Bore | KMS | |
| Stroke | KMS | |
| Compression ratio | KMS | |
| # of camshafts | 1 | |
| Pistons | KMS design | |
| Valves / made | 16 / steel | |
| Lifter type | Roller * | |
| Manifold type | KMS | |
| * Engine development on request for different race classes. | ||

