LH9 5.3L engine: specs, donor vehicles & swap notes
| Spec | Value |
|---|---|
| RPO | LH9 |
| Family | Generation IV |
| Years | 2010–2012 |
| Displacement | 5.3 L / 325 ci |
| Horsepower | 300 hp |
| Torque | 320 lb-ft |
| Bore × stroke | 3.78 × 3.622 in |
| Compression | 9.70:1 or 9.90:1 |
| Block | aluminum |
| AFM/DOD | No |
Aluminum, VVT, E85-capable
Specs from secondary sources; GM ratings varied by year and vehicle.
Donor vehicles with the LH9
Where to find one at the junkyard. Confirm with the RPO sticker in the glovebox or the 8th VIN digit.
| Vehicle | Years |
|---|---|
| Chevrolet Colorado/GMC Canyon | 2010–2012 |
| Hummer H3 Alpha | 2010 |
Next steps
- Find a cam for the LH9
- Compare every LS donor engine
- Size injectors and fuel pump
- Swap guides by vehicle
Sources