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LH9 5.3L engine: specs, donor vehicles & swap notes

SpecValue
RPOLH9
FamilyGeneration IV
Years2010–2012
Displacement5.3 L / 325 ci
Horsepower300 hp
Torque320 lb-ft
Bore × stroke3.78 × 3.622 in
Compression9.70:1 or 9.90:1
Blockaluminum
AFM/DODNo

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.

VehicleYears
Chevrolet Colorado/GMC Canyon2010–2012
Hummer H3 Alpha2010

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