LQ9 6.0L engine: specs, donor vehicles & swap notes
| Spec | Value |
|---|---|
| RPO | LQ9 |
| Family | Generation III |
| Years | 2002–2007 |
| Displacement | 6.0 L / 364 ci |
| Horsepower | 345 hp |
| Torque | 380 lb-ft |
| Bore × stroke | 4.0 × 3.622 in |
| Compression | 10.00:1 |
| Block | iron |
| AFM/DOD | No |
| VIN 8th digit | N |
Iron/Alum. heads
Specs from secondary sources; GM ratings varied by year and vehicle.
Donor vehicles with the LQ9
Where to find one at the junkyard. Confirm with the RPO sticker in the glovebox or the 8th VIN digit.
| Vehicle | Years |
|---|---|
| Cadillac Escalade 2WD | 2005–2006 |
| Cadillac Escalade AWD | 2002–2006 |
| Cadillac Escalade ESV | 2003–2006 |
| Cadillac Escalade EXT | 2002–2006 |
| Chevrolet Silverado Classic VortecMAX/GMC Sierra Classic VortecMAX | 2006–2007 |
| Chevrolet Silverado SS & H/O Edition | 2003–2007 |
| GMC Sierra Denali | 2005–2006 |
Next steps
- Find a cam for the LQ9
- Compare every LS donor engine
- Size injectors and fuel pump
- Swap guides by vehicle
Questions about the LQ9
- LQ4 vs LQ9: what's the difference?
- LY6 vs L96 vs LQ9
- How do I tell an LQ4 from an LQ9?
- What year did the LQ4/LQ9 become Gen IV?
Sources