GM’s L20 4.8L Gen IV Vortec V8 engine is the entry level OEM engineered solution from Powertrain IntegrationTM, but it lacks none of the rugged durability for which its bigger siblings are known.
The L20 runs on gasoline and is E85 compatible. A strong performer, it sacrifices nothing to provide smooth and quiet operation. Unlike most consumer product engines, the GM 4.8L V8 L20 is dynamometer emissions certified, greatly reducing overall vehicle emissions certification cost.
The GM 4.8L L20 pairs well with any of several GM Hydra-Matic automatic transmissions.
Powertrain Integration engineering and sales staff are dedicated finding customer the right combination using this popular and proven duo.
|Engine RPO||GM 4.8L V8 L20|
|GVWR/ GCW||Up to 13,000 lbs|
|Displacement||4807cc (293 ci)|
|Fuel Type||Gasoline (E85 compatible)|
|Valve Configuration||Overhead valves|
|Valves Per Cylinder||2|
|Valve Lifters||Hydraulic roller|
|Firing Order||1 – 8 – 7 – 2 – 6 – 5 – 4 – 3|
|Horsepower||> 10,000 lbs: 260 HP (194 kW) @ 4600 RPM
<= 10,000 lbs: 280 HP (209 kW) @ 5200 RPM
|Torque||> 10,000 lbs: 295 lb-ft (400 Nm) @ 4600 RPM
<= 10,000 lbs: 295 lb-ft (400 Nm) @ 4600 RPM
|Bore / Stroke||96.01 mm x 83 mm|
|Fuel System||Sequential Fuel Injection|
|Exhaust Manifold||Cast iron|
|Crankshaft||Cast nodular iron with undercut & rolled fillets|
|Connecting Rods||Powder metal|
|Main Bearing Caps||Powder metal|
|Ignition||Coil near plug|
|Max Engine Speed||6000 RPM|
|Emission Controls||Dual three-way catalyst
Positive crankcase ventilation
|Additional features||Variable valve timing (VVT)|