L20 4.8L engine: specs, donor vehicles & swap notes
| Spec | Value |
|---|---|
| RPO | L20 |
| Family | Generation IV |
| Years | 2010–2017 |
| Displacement | 4.8 L / 293 ci |
| Horsepower | 260–302 hp |
| Torque | 295–305 lb-ft |
| Bore × stroke | 3.78 × 3.268 in |
| Compression | 8.80:1 |
| Block | iron |
| AFM/DOD | No |
Iron/Alum. heads, VVT, E85-capable
Specs from secondary sources; GM ratings varied by year and vehicle.
Donor vehicles with the L20
Where to find one at the junkyard. Confirm with the RPO sticker in the glovebox or the 8th VIN digit.
| Vehicle | Years |
|---|---|
| Chevrolet Express/GMC Savana 2500/3500 | 2010–2017 |
| Chevrolet Silverado 1500 | 2010–2013 |
| GMC Sierra 1500 | 2010–2013 |
Next steps
- Find a cam for the L20
- Compare every LS donor engine
- Size injectors and fuel pump
- Swap guides by vehicle
Sources