Unveiling the Powerhouse: A Chronicle of the Chevrolet LS Engine Family

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In the realm of automotive engineering, few powerplants have garnered as much acclaim and reverence as the Chevrolet LS engine family. Renowned for its versatility, performance, and reliability, the LS engine lineage stands as a testament to Chevrolet’s commitment to innovation and excellence. Let’s embark on a journey through time, tracing the origins and evolution of this iconic engine series.

Genesis: The LS1 Era (1997-2004)

The LS saga began in 1997 with the introduction of the LS1 engine in the fifth-generation Chevrolet Corvette, marking a paradigm shift in American automotive performance. Boasting an all-aluminum construction, sequential fuel injection, and advanced cylinder head design, the LS1 delivered impressive power output and efficiency.

With its debut, the LS1 quickly became the engine of choice for enthusiasts and racers alike, thanks to its potent combination of horsepower, torque, and scalability. Its success paved the way for widespread adoption across the Chevrolet lineup, including the Camaro, Firebird, and various truck models.

Evolution: Expanding the Family Tree

As demand for the LS platform surged, Chevrolet expanded its engine offerings to cater to diverse needs and preferences. Variants such as the LS2, LS3, LS6, and LS7 emerged, each pushing the boundaries of performance and technology.

The LS2, introduced in 2005, featured increased displacement and power output, making it a popular choice for high-performance applications. Meanwhile, the LS3, unveiled in 2008, boasted enhanced cylinder heads and intake manifold design, further elevating performance levels.

The LS6, derived from the LS1 architecture, gained fame as the powerplant for the legendary Chevrolet Corvette Z06, delivering exhilarating performance on both road and track. Similarly, the LS7 engine, with its hand-built craftsmanship and race-derived components, solidified its status as a powerhouse in the realm of high-performance vehicles.

Innovation: Pushing the Boundaries

With each iteration, Chevrolet continued to innovate and refine the LS platform, introducing advancements in technology, materials, and manufacturing processes. The LS family witnessed the integration of features such as variable valve timing (VVT), active fuel management (AFM), and direct injection (DI), further enhancing performance, efficiency, and drivability.

The LS engine family also served as a canvas for aftermarket tuners and enthusiasts to unleash their creativity and push the limits of performance. From turbocharging and supercharging to custom camshafts and engine swaps, the LS platform offered endless possibilities for customization and modification.

Legacy: A Lasting Impact

As Chevrolet transitions to newer engine architectures, the legacy of the LS family endures as a symbol of automotive excellence and innovation. Its influence extends far beyond the realm of Chevrolet vehicles, shaping the landscape of high-performance engines and inspiring generations of enthusiasts and engineers.

From the iconic roar of the LS1-powered Corvette to the adrenaline-inducing acceleration of the LS7-equipped Camaro, the Chevrolet LS engine family has left an indelible mark on automotive history. Its legacy lives on in the hearts and minds of enthusiasts, ensuring that the spirit of performance and passion continues to thrive for years to come.

In conclusion, the Chevrolet LS engine family stands as a testament to the power of innovation, perseverance, and passion. From its humble beginnings to its status as an automotive icon, the LS platform represents the pinnacle of American engineering and performance. As we look to the future, one thing remains certain: the legend of the LS engine family will continue to inspire and captivate automotive enthusiasts for generations to come.

LS 1 (1997-2004) (VIN Code G) Gen 3

The Chevrolet LS1 engine is an iconic powerplant known for its performance and versatility. It’s a member of the Gen III small-block V8 engine family developed by General Motors (GM). Here are the specifications for the LS1 engine:

  1. Displacement: 5.7 liters, or approximately 346 ci
  2. Block Material: Cast aluminum, (Cast Iron for most trucks, known as ‘Vortec’ engines, see below)
  3. Cylinder Heads: Cast aluminum, Cathedral intake port design
  4. Crankshaft and Rods: Cast iron crankshaft, Forged powder metal connecting rods
  5. Compression Ratio: 10.2:1 Flat top pistons
  6. Oil System: Wet sump
  7. Valve Train: Hydraulic roller camshaft, roller tip rockers
  8. Fuel Injection: Sequential fuel injection
  9. Weight: 177kg, 390lb
  10. Bore and Stroke: 99 mm × 92 mm (3.898 in × 3.622 in)
  11. Bore Centre: 111.76mm (4.40 in)
  12. Power Output: When it debuted in the 1997 Chevrolet Corvette C5, the LS1 engine produced 345 horsepower at 5,600 rpm and 350 lb-ft of torque at 4,400 rpm.
  13. Redline: The LS1 engine typically has a redline around 6,500-6,700 rpm
  14. Applications: Apart from the Corvette, the LS1 engine found its way into various other GM vehicles, including the Chevrolet Camaro SS and Pontiac Firebird Trans Am, among others. Its lightweight design, compact size, and impressive power output made it a popular choice for both performance enthusiasts and automotive manufacturers.
YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
1997-2000ChevroletCorvette6-Speed Manual (T-56) / 4-Speed Auto (4L60)345 / 257 @ 5600350 /470 @ 4400
2001-2004ChevroletCorvette6-Speed Manual (T-56) / 4-Speed Auto (4L60)350 / 260 @ 5600365 /495 @ 4400
1998-2000ChevroletCamaro Z286-Speed Manual (T-56) / 4-Speed Auto (4L60E)305 / 227 @ 5200335 / 454 @ 4400
1998-2000ChevroletCamaro SS6-Speed Manual (T-56) / 4-Speed Auto (4L60E)320 / 242 @ 5200345 / 467 @ 4400
2001-2002ChevroletCamaro Z286-Speed Manual (T-56) / 4-Speed Auto (4L60E)310 / 231 @ 5200340 / 461 @ 4400
2001-2002ChevroletCamaro SS6-Speed Manual (T-56) / 4-Speed Auto (4L60E)325 / 238 @ 5200350 / 475 @ 4400
1998-2000PontiacFirebird Formula6-Speed Manual (T-56) / 4-Speed Auto (4L60E)305 / 227 @ 5200335 / 454 @ 4400
1998-2000PontiacFirebird Trans Am6-Speed Manual (T-56) / 4-Speed Auto (4L60E)320 / 242 @ 5200345 / 467 @ 4400
2001-2002PontiacFirebird Formula6-Speed Manual (T-56) / 4-Speed Auto (4L60E)310 / 227 @ 5200340 / 461 @ 4400
2001-2002PontiacFirebird Trans Am6-Speed Manual (T-56) / 4-Speed Auto (4L60E)325 / 238 @ 5200350 / 475 @ 4400
1999–2000HoldenVT.II Commodore, VT.II Calais6-Speed Manual (T-56) / 4-Speed Auto (4L60E)295 / 220 @ 5000323 / 446 @ 4400
1999–2003HoldenStatesman, Caprice6-Speed Manual (T-56) / 4-Speed Auto (4L60E)295 / 220 @ 5000323 / 446 @ 4400
2000–2002HoldenVX Commodore, VX Berlina, VX Calais, VU Ute6-Speed Manual (T-56) / 4-Speed Auto (4L60E)302 / 225 @ 5200339 / 460 @ 4400
2001–2002HoldenMonaro6-Speed Manual (T-56) / 4-Speed Auto (4L60E)302 / 225 @ 5200339 / 460 @ 4400
2002-2003HoldenCommodore SV8 and SS, Ute S and SS,Monaro6-Speed Manual (T-56) / 4-Speed Auto (4L60E)315 / 235 @ 5200343 / 465 @ 4400
2003-2004HoldenBerlina, Ute S, One Tonner S6-Speed Manual (T-56) / 4-Speed Auto (4L60E)315 / 235 @ 5200343 / 465 @ 4400
2003-2004HoldenCommodore SV8 and SS, Calais, Ute SS, Caprice6-Speed Manual (T-56) / 4-Speed Auto (4L60E)328 / 245 @ 5200343 / 465 @ 4400
2003-2004HoldenMonaro6-Speed Manual (T-56) / 4-Speed Auto (4L60E)328 / 245 @ 5200343 / 465 @ 4400
2003-2004HoldenStatesman6-Speed Manual (T-56) / 4-Speed Auto (4L60E)315 / 235 @ 5200339 / 460 @ 4000
2003-2005HoldenAdventra6-Speed Manual (T-56) / 4-Speed Auto (4L60E)315 / 235 @ 5200339 / 460 @ 4000
2003-2005HoldenVY.II Crewman6-Speed Manual (T-56) / 4-Speed Auto302 / 225 @ 5200339 / 460 @ 4400
2004-2005HoldenBerlina, Calais, One Tonner, Crewman6-Speed Manual (T-56) / 4-Speed Auto (4L60E)315 / 235 @ 5600339 / 460 @ 4000
2004-2005HoldenStatesman6-Speed Manual (T-56) / 4-Speed Auto (4L60E)328 / 245 @ 5200343 / 465 @ 4400
2004-2005HoldenCommodore SV8 and SS, Ute SS6-Speed Manual (T-56) / 4-Speed Auto (4L60E)369 / 250 @ 5600347 / 470 @ 4000
2004-2005HoldenCaprice6-Speed Manual (T-56) / 4-Speed Auto (4L60E)335 / 250 @ 5600347 / 470 @ 4800
2004-2005HoldenMonaro6-Speed Manual (T-56) / 4-Speed Auto (4L60E)349 / 260 @ 5600347 / 500 @ 4000
2005-2006HoldenAdventra6-Speed Manual (T-56) / 4-Speed Auto (4L60E)335 / 250 @ 5600347 / 470 @ 4800
1999–2000Holden Special VehiclesHSV VT.II ClubSport, HSV VT.II Senator, HSV VT SV99, HSV WH Grange6-Speed Manual (T-56) / 4-Speed Auto (4L60E)335 / 250 @ 5600349 / 473 @ 4000
2000-2002Holden Special VehiclesHSV VX ClubSport, HSV VX Senator, HSV WH Grange6-Speed Manual (T-56) / 4-Speed Auto (4L60E)342 / 255 @ 5600350 / 475 @ 4000
2001-03Holden Special VehiclesHSV V2.I GTO Coupe6-Speed Manual (T-56) / 4-Speed Auto (4L60E)342 / 255 @ 5600350 / 475 @ 4000
2002-2003Holden Special VehiclesHSV Y-Series I: ClubSport, Senator, Maloo6-Speed Manual (T-56) / 4-Speed Auto (4L60E)343 / 260 @ 5600350 / 475 @ 4000
2003Holden Special VehiclesHSV V2.II GTO Coupe6-Speed Manual (T-56) / 4-Speed Auto (4L60E)343 / 260 @ 5600350 / 475 @ 4000
2003-2004Holden Special VehiclesHSV V2.III GTO Coupe6-Speed Manual (T-56) / 4-Speed Auto (4L60E)382 / 285 @ 5600376 /510 @ 4800
2003-2004Holden Special VehiclesHSV Y-Series II: ClubSport, Senator, Maloo, HSV WK Grange6-Speed Manual (T-56) / 4-Speed Auto (4L60E)382 / 285 @ 5600376 /510 @ 4800
2003-2005Holden Special VehiclesHSV Y-Series Avalanche6-Speed Manual (T-56) / 4-Speed Auto (4L60E)362 / 270 @ 5700350 / 475 @ 4000
2004Holden Special VehiclesHSV V2 Coupe 46-Speed Manual (T-56) / 4-Speed Auto (4L60E)362 / 270 @ 5700350 / 475 @ 4000
2004-2005Holden Special VehiclesHSV Z-Series Coupe 46-Speed Manual (T-56) / 4-Speed Auto (4L60E)362 / 270 @ 5700350 / 475 @ 4000
2004-2005Holden Special VehiclesHSV Y-Series Avalanche XUV4-Speed Auto AWD (4L60E)362 / 270 @ 5700350 / 475 @

LR4 (1999-2007) (VIN Code V)

The Vortec LR4 is an LS style small block V8 truck engine. They used a cast iron block.

  1. Displacement: 4.8 liters, or approximately 293 ci
  2. Block Material: Cast Iron (Casting numbers 12567392, 12567393, 12551358)
  3. Cylinder Heads: Cast aluminum, Cathedral intake port design (Casting numbers 862, 706)
  4. Crankshaft and Rods: Cast iron crankshaft, Forged powder metal connecting rods
  5. Compression Ratio: 9.4:1 Flat top pistons
  6. Oil System: Wet sump
  7. Valve Train: Hydraulic roller camshaft, roller tip rockers
  8. Fuel Injection: Sequential fuel injection
  9. Weight: 195kg, 430lb
  10. Bore and Stroke: 96 mm × 83 mm (3.78 in × 3.267 in)
  11. Bore Centre: 111.76mm (4.40 in)
  12. Power Output: When it debuted in the 1999 Chevrolet Silverado, the LR4 engine produced 255 horsepower at 5,200 rpm and 285 lb-ft of torque at 4,000 rpm. Later increasing to 285hp and 295 lb-ft.
  13. Applications: Trucks
YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
2000-2006ChevroletTahoe (GMC Yukon)6-Speed Manual (T-56) / 4-Speed Auto (4L60)270/ 201 @ 5200285 /386 @ 4000
1999-2007ChevroletSilverado (GMC Sierra 1500)6-Speed Manual (T-56) / 4-Speed Auto (4L60)255 / 190 @ 5200285 /386 @ 4000
2003-2007ChevroletExpress (GMC Savana 2500/3500)6-Speed Manual (T-56) / 4-Speed Auto (4L60E)275 / 205 @ 5200290 /393 @ 4000

LM7 (1999-2007) (VIN Code T)

The Vortec LM7 is an LS style small block V8 truck engine. They used a cast iron block.

  1. Displacement: 5.3 liters, or approximately 325 ci
  2. Block Material: Cast Iron
  3. Cylinder Heads: Cast aluminum, Cathedral intake port design
  4. Crankshaft and Rods: Cast iron crankshaft, Forged powder metal connecting rods
  5. Compression Ratio: 9.5:1 Dished top pistons
  6. Oil System: Wet sump
  7. Valve Train: Hydraulic roller camshaft, roller tip rockers
  8. Fuel Injection: Sequential fuel injection
  9. Weight: 195kg, 430lb
  10. Bore and Stroke: 96 mm × 92 mm (3.78 in × 3.62 in)
  11. Bore Centre: 111.76mm (4.40 in)
  12. Power Output: When it debuted in the 1999 Chevrolet Silverado, the LM7 engine produced 270 horsepower at 5,200 rpm and 315 lb-ft of torque at 4,000 rpm. Later increasing to 295hp and 335 lb-ft.
  13. Applications: Trucks, SUV
YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
2002-2005CadillacEscalade 2wd6-Speed Manual (T-56) / 4-Speed Auto (4L60)285/213 @ 5200325/441 @ 4000
2002-2006ChevroletAvalanche 15006-Speed Manual (T-56) / 4-Speed Auto (4L60)285/213 @ 5200325/441 @ 4000
2003-2007ChevroletExpress (GMC Savana 1500, 2500)6-Speed Manual (T-56) / 4-Speed Auto (4L60E)285/213 @ 5200325/441 @ 4000
1999-2007ChevroletSilverado (GMC Sierra 1500, 2500)6-Speed Manual (T-56) / 4-Speed Auto (4L60E)270/201 @ 5200315/427 @ 4000
2000-2006ChevroletSuburban (GMC Yukon XL)6-Speed Manual (T-56) / 4-Speed Auto (4L60E)285/213 @ 5200325/441 @ 4000
2000-2006ChevroletTahoe (GMC Yukon)6-Speed Manual (T-56) / 4-Speed Auto (4L60E)285/213 @ 5200325/441 @ 4000

L59 (1999-2007) (VIN Code P)

The Vortec L59 is a flex-fuel version of the LM7 engine

YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
2002-2006ChevroletTahoe (GMC Yukon)6-Speed Manual (T-56) / 4-Speed Auto (4L60)285/213 @ 5200320/434 @ 4000
2005-2006ChevroletAvalanche 15006-Speed Manual (T-56) / 4-Speed Auto (4L60)285/213 @ 5200320/434 @ 4000
2002-2007ChevroletSilverado (GMC Sierra 1500)6-Speed Manual (T-56) / 4-Speed Auto (4L60E)285/213 @ 5200320/434 @ 4000
2002-2006ChevroletSuburban (GMC Yukon XL 1500)6-Speed Manual (T-56) / 4-Speed Auto (4L60E)285/213 @ 5200320/434

LM4 (1999-2007) (VIN Code P)

The Vortec LM4 is an aluminium block version of the LM7 engine

  1. Displacement: 5.3 liters, or approximately 325 ci
  2. Block Material: Cast Aluminium (Casting number 12566910)
  3. Cylinder Heads: Cast aluminum, Cathedral intake port design (Casting numbers 862, 706)
  4. Crankshaft and Rods: Cast iron crankshaft, Forged powder metal connecting rods
  5. Compression Ratio: 9.5:1 Dished top pistons
  6. Oil System: Wet sump
  7. Valve Train: Hydraulic roller camshaft, roller tip rockers
  8. Fuel Injection: Sequential fuel injection
  9. Weight: 177kg, 390lb
  10. Bore and Stroke: 96 mm × 92 mm (3.78 in × 3.62 in)
  11. Bore Centre: 111.76mm (4.40 in)
  12. Power Output: 290 horsepower at 5,200 rpm and 325 lb-ft of torque at 4,000 rpm.
  13. Applications: Trucks
YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
2003-2004IsuzuAscender6-Speed Manual (T-56) / 4-Speed Auto (4L60)290/216 @ 5200325/441 @ 4000
2003-2004GMCEnvoy XL6-Speed Manual (T-56) / 4-Speed Auto (4L60)290/216 @ 5200325/441 @ 4000
2003-2004ChevroletSSR6-Speed Manual (T-56) / 4-Speed Auto (4L60E)290/216 @ 5200325/441 @ 4000
2004GMCEnvoy XUV6-Speed Manual (T-56) / 4-Speed Auto (4L60E)290/216 @ 5200325/441 @ 4000
2004BuickRainier6-Speed Manual (T-56) / 4-Speed Auto (4L60E)290/216 @ 5200325/441 @ 4000
2003-2005ChevroletTrailblazer EXT6-Speed Manual (T-56) / 4-Speed Auto (4L60E)290/216 @ 5200325/441 @ 4000

L33 (1999-2007) (VIN Code B)

The Vortec L33 is an aluminum block version of the LM7, marketed as the Vortec 5300 HO. The L33 uses flat top pistons for a compression ratio of 10.0:1 and a different camshaft to produce 310 hp (230 kW) and 335 lb·ft (441 N·m). It was only available on extended-cab standard-bed 4WD pickup trucks. Only 25% of 2005 Chevrolet/GMC full-size pickup trucks had an L33 engine.

  1. Displacement: 5.3 liters, or approximately 325 ci
  2. Block Material: Cast Aluminium
  3. Cylinder Heads: Cast aluminum, Cathedral intake port design
  4. Crankshaft and Rods: Cast iron crankshaft, Forged powder metal connecting rods
  5. Compression Ratio: 10:1 Flat top pistons
  6. Oil System: Wet sump
  7. Valve Train: Hydraulic roller camshaft, roller tip rockers
  8. Fuel Injection: Sequential fuel injection
  9. Weight: 177kg, 390lb
  10. Bore and Stroke: 96 mm × 92 mm (3.78 in × 3.62 in)
  11. Bore Centre: 111.76mm (4.40 in)
  12. Power Output: 310 horsepower at 5,200 rpm and 335 lb-ft of torque at 4,000 rpm.
  13. Applications: Trucks
YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
2005-2007ChevroletSilverado 1500 4wd (GMC Sierra 1500 4wd)6-Speed Manual (T-56) / 4-Speed Auto (4L60)310/ 230 @ 5200335/454 @ 4000

LQ4 (1999-2007) (VIN Code U)

The Vortec 6000 is an iron block truck engine displacing 5967cc.

  1. Displacement: 6.0 liters, or approximately 364 ci
  2. Block Material: Cast Iron (Casting numbers 12551364, 12573581, 12577184)
  3. Cylinder Heads: Cast aluminum, Cathedral intake port design (Early versions had cast iron heads)(Casting numbers 373, 873, 317, 035)
  4. Crankshaft and Rods: Cast iron crankshaft, Forged powder metal connecting rods
  5. Compression Ratio: 9.4:1 Dished top pistons
  6. Oil System: Wet sump
  7. Valve Train: Hydraulic roller camshaft, roller tip rockers
  8. Fuel Injection: Sequential fuel injection
  9. Weight: 219kg, 483lb
  10. Bore and Stroke: 101.6 mm × 92 mm (4.0 in × 3.62 in)
  11. Bore Centre: 111.76mm (4.40 in)
  12. Power Output: When it debuted in the 1999 Chevrolet Silverado, the LQ4 engine produced 300 horsepower at 4400 rpm and 360 lb-ft of torque at 4,000 rpm. Later increasing to 335hp and 515 lb-ft.
  13. Applications: Trucks
YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
1999-2007ChevroletSilverado (GMC Sierra 1500HD, 2500, 2500HD, 35006-Speed Manual (T-56) / 4-Speed Auto (4L60)300/ 224 @ 4400360 /488 @ 4000
2001GMCSierra C36-Speed Manual (T-56) / 4-Speed Auto (4L60)325/ 242 @ 5200370/502 @ 4000
2002-2007GMCSierra Denali6-Speed Manual (T-56) / 4-Speed Auto (4L60E)325/ 242 @ 5200370/ 502 @ 4000
2002-2006ChevroletSuburban 2500 (GMC Yukon XL 2500)6-Speed Manual (T-56) / 4-Speed Auto (4L60E)320/242 @ 5200355/481   @ 4000
2002-2007HummerH26-Speed Manual (T-56) / 4-Speed Auto (4L60E)316/236 @ 5200360/488 @ 4000
2002-2006ChevroletSuburban 1500 LTZ (GMC Yukon, Yukon XL Denali)6-Speed Manual (T-56) / 4-Speed Auto (4L60E)325/242 @ 5200370/502  @ 4000
2003-2007ChevroletExpress (GMC Savana 2500, 3500)6-Speed Manual (T-56) / 4-Speed Auto (4L60E)300/224 @ 4400360 / 488 @ 4000
2003-2008ChevroletW series (GMC W series) (Isuzu NPR)6-Speed Manual (T-56) / 4-Speed Auto (4L60E)300/224 @ 4400360 / 488 @ 4000

LQ9 (2002-2007) (VIN Code N)

The Vortec LQ9, HO 6000 or VortecMAX is a special high-output version of the Vortec 6000 V8 truck engine originally designed for Cadillac in 2002. This engine was renamed as the VortecMAX for 2006.

  1. Displacement: 6.0 liters, or approximately 364 ci
  2. Block Material: Cast Iron (Casting numbers 12551364, 12573581, 12577184)
  3. Cylinder Heads: Cast aluminum, Cathedral intake port design (Early versions had cast iron heads)(Casting numbers 317, 035)
  4. Crankshaft and Rods: Cast iron crankshaft, Forged powder metal connecting rods
  5. Compression Ratio: 10.1:1 Dished top pistons
  6. Oil System: Wet sump
  7. Valve Train: Hydraulic roller camshaft, roller tip rockers
  8. Fuel Injection: Sequential fuel injection
  9. Weight: 219kg, 483lb
  10. Bore and Stroke: 101.6 mm × 92 mm (4.0 in × 3.62 in)
  11. Bore Centre: 111.76mm (4.40 in)
  12. Power Output: When it debuted in the 2002 Cadillac Escalade, the LQ4 engine produced 345 horsepower at 4400 rpm and 380 lb-ft of torque at 4,000 rpm.
  13. Applications: Trucks
YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
2002-2006CadillacEscalade AWD, EXT6-Speed Manual (T-56) / 4-Speed Auto (4L60)345/258 @ 4400380/515 @ 4000
2005-2006CadillacEscalade 2WD6-Speed Manual (T-56) / 4-Speed Auto (4L60)345/258 @ 4400380/515 @ 4000
2003-2006CadillacEscalade ESV6-Speed Manual (T-56) / 4-Speed Auto (4L60E)345/258 @ 4400380/515 @ 4000
2003-2007ChevroletSilverado SS6-Speed Manual (T-56) / 4-Speed Auto (4L60E)345/258 @ 4400380/515  @ 4000
2004-2007ChevroletSilverado (GMC Sierra Vortec HO Edition6-Speed Manual (T-56) / 4-Speed Auto (4L60E)345/258 @ 4400380/515 @ 4000
2005-2006GMCSierra Denali6-Speed Manual (T-56) / 4-Speed Auto (4L60E)345/258 @ 4400380/515 @ 4000

LS 2 (2005-2009) (VIN Code U) Gen 4

The LS2 (6.0 L; 364.1 cu in) was released in 2005 in Corvette’s, GTO’s, Trailblazers, Holdens in Australia and more. It produces 390-400 bhp (291-298 kW) at 6000 rpm and 400 lb⋅ft (542 N⋅m) at 4400 rpm. The compression of the LS2 was also raised to 10.9:1 compared to the LS1 at 10.2:1

  1. Displacement: 6.0 liters, or approximately 364 ci
  2. Block Material: Cast Aluminium (Casting numbers 12568952, 12560799)
  3. Cylinder Heads: Cast aluminum, Cathedral intake port design (Casting numbers 799,243)
  4. Crankshaft and Rods: Cast iron crankshaft, Forged powder metal connecting rods
  5. Compression Ratio: 10.9:1
  6. Oil System: Wet sump
  7. Valve Train: Hydraulic roller camshaft, roller tip rockers
  8. Fuel Injection: Sequential fuel injection
  9. Weight: 172kg, 380lb
  10. Bore and Stroke: 101.6 mm × 92 mm (4.0 in × 3.62 in)
  11. Bore Centre: 111.76mm (4.40 in)
  12. Power Output: When it debuted in the 2005 Corvette, the LS2 engine produced 400 horsepower at 6000 rpm and 400 lb-ft of torque at 4,400 rpm.
  13. Applications: Cars and Trucks
YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
2005-2007ChevroletCorvette6-Speed Manual (T-56) / 4-Speed Auto (4L60E)400/298 @ 6000400/542 @ 4400
2005-2006ChevroletSSR6-Speed Manual (T-56) / 4-Speed Auto (4L60E)400/298 @ 6000400/542 @ 4400
2006-2009ChevroletTrailblazer SS6-Speed Manual (T-56) / 4-Speed Auto (4L60E)395/295@ 6000400/542 @ 4400
2006-2007CadillacCTS-V6-Speed Manual (T-56) / 4-Speed Auto (4L60E)400/ 298 @ 6000400/542 @ 4400
2005-2006HoldenHSV Coupe GTO6-Speed Manual (T-56) / 4-Speed Auto (4L60E)400/298 @ 6000400/542 @ 4400
2005-2006HoldenHSV SV60006-Speed Manual (T-56) / 4-Speed Auto (4L60E)400/298 @ 6000400/542 @ 4400
2005-2008HoldenHSV Clubsport R8, Maloo R8, Senator Signature, and GTS6-Speed Manual (T-56) / 4-Speed Auto (4L60E)400/298 @ 6000400/542 @ 4400
2005-2008HoldenHSV Grange6-Speed Manual (T-56) / 4-Speed Auto (4L60E)400/298 @ 6000400/542 @ 4400
2005-2006PontiacGTO6-Speed Manual (T-56) / 4-Speed Auto (4L60E)400/298 @ 6000400/542 @ 4400
2005-2006VauxhallMonaro VXR6-Speed Manual (T-56) / 4-Speed Auto (4L60E)400/298 @ 6000400/542 @ 4400
2007–2009VauxhallVXR86-Speed Manual (T-56) / 4-Speed Auto (4L60E)400/298 @ 6000400/542 @ 4400
2008-2009SAAB9-7X Aero6-Speed Manual (T-56) / 4-Speed Auto (4L60E)400/298 @ 6000400/542 @ 4400

L 76 (2006-2010) (VIN Code Y) Gen 4

The L 76 is essentially an LS 2 bottom end with the L92 rectangle port heads. AFM (active fuel management) also known as DOD (displacement on demand) was available on many of the vehicles fitted with the L 76. A truck version (Vortec 6000 or Vortec MAX) was also produced. L 76 engines produced 348-367 bhp (260-274 kW) at 5600 rpm and 376-385 lb⋅ft (510-522 N⋅m) at 4400 rpm.

  1. Displacement: 6.0 liters, or approximately 364 ci
  2. Block Material: Cast Aluminium (Casting numbers 12568952)
  3. Cylinder Heads: Cast aluminum, Rectangle intake port design (Casting numbers 5364,823)
  4. Crankshaft and Rods: Cast iron crankshaft, Forged powder metal connecting rods
  5. Compression Ratio: Cars 10.4:1 Trucks 9.7:1
  6. Oil System: Wet sump
  7. Valve Train: Hydraulic roller camshaft, roller tip rockers
  8. Fuel Injection: Sequential fuel injection
  9. Weight: 172kg, 380lb
  10. Bore and Stroke: 101.6 mm × 92 mm (4.0 in × 3.62 in)
  11. Bore Centre: 111.76mm (4.40 in)
  12. Power Output: 348-367 horsepower at 5600 rpm and 376-385 lb-ft of torque at 4,400 rpm.
  13. Applications: Cars and Trucks
YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
2006HoldenVZ Commodore6-Speed Manual (T-56) / 4-Speed Auto (4L60E)348/260 @ 5600376/510 @ 4400
2006HoldenWL Statesman
Caprise		6-Speed Manual (T-56) / 4-Speed Auto (4L60E)348/260 @ 5600376/510 @ 4400
2008-2009PontiacG8 GT6-Speed Manual (T-56) / 4-Speed Auto (4L60E)361/269@ 5600385/522 @ 4400
2008-2010HoldenVE Commodore4-Speed Auto (4L60E)348/ 260 @ 5600376/510 @ 4400
2008-2010HoldenVE Ute4-Speed Auto (4L60E)348/260 @ 5600376/510 @ 4400
2008-2010HoldenWM Statesman
Caprice		6-Speed Manual (T-56) / 4-Speed Auto (4L60E)348/260 @ 5600376/510 @ 4400
2007-2009ChevroletSuburban 15006-Speed Manual (T-56) / 4-Speed Auto (4L60E)367/274 @ 5400375/508 @ 4400
2007-2009ChevroletAvalanche6-Speed Manual (T-56) / 4-Speed Auto (4L60E)367/274 @ 5400375/508 @ 4400
2007-2009ChevroletSilverado 15006-Speed Manual (T-56) / 4-Speed Auto (4L60E)367/274 @ 5400375/508 @ 4400
2007-2009GMCSierra 15006-Speed Manual (T-56) / 4-Speed Auto (4L60E)367/274 @ 5400375/508 @ 4400
2007-2009GMCYukon XL6-Speed Manual (T-56) / 4-Speed Auto (4L60E)367/274 @ 5400375/508 @ 4400

L 98 (2006-2010) (Australia Only) Gen 4

The L 98 is essentially an L 76 without DOD, only fitted to certain Holden (Australia) models

  1. Displacement: 6.0 liters, or approximately 364 ci
  2. Block Material: Cast Aluminium (Casting numbers 12568952)
  3. Cylinder Heads: Cast aluminum, Rectangle intake port design (Casting numbers 5364,823)
  4. Crankshaft and Rods: Cast iron crankshaft, Forged powder metal connecting rods
  5. Compression Ratio: 10.4:1
  6. Oil System: Wet sump
  7. Valve Train: Hydraulic roller camshaft, roller tip rockers
  8. Fuel Injection: Sequential fuel injection
  9. Weight: 172kg, 380lb
  10. Bore and Stroke: 101.6 mm × 92 mm (4.0 in × 3.62 in)
  11. Bore Centre: 111.76mm (4.40 in)
  12. Power Output: 362 horsepower at 5700 rpm and 391 lb-ft of torque at 4,400 rpm.
  13. Applications: Cars (Australia only)
YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
2006-2007HoldenVZ Ute6-Speed Manual (T-56) / 4-Speed Auto (4L60E)362/270 @ 5700391/530 @ 4400
2006-2010HoldenVE Commodore6-Speed Manual (T-56)362/270 @ 5700391/530 @ 4400
2006-2009HoldenVE Calais6-Speed Manual (T-56) / 4-Speed Auto (4L60E)362/270@ 5700391/530 @ 4400
2006-2010HoldenVE Ute6-Speed Manual
(T-56)		362/270 @ 5700391/530 @ 4400
2008-2010HoldenWM Statesman
Caprice		6-Speed Manual (T-56) / 4-Speed Auto (4L60E)362/270 @ 5700391/530 @ 4400

L 77 (2010-2017) (VIN Code 2) Gen 4

L77 engines are essentially L67 engines updated to incorporate ‘flex fuel’ aloowing them to run on E85. Fitted to Australian Holden Commodore Series II VE range in both manual and automatic transmissions, along with the Chevrolet Caprice PPV (police car).

  1. Displacement: 6.0 liters, or approximately 364 ci
  2. Block Material: Cast Aluminium (Casting numbers 12568952)
  3. Cylinder Heads: Cast aluminum, Rectangle intake port design (Casting numbers 5364,823)
  4. Crankshaft and Rods: Cast iron crankshaft, Forged powder metal connecting rods
  5. Compression Ratio: 10.4:1
  6. Oil System: Wet sump
  7. Valve Train: Hydraulic roller camshaft, roller tip rockers
  8. Fuel Injection: Sequential fuel injection
  9. Weight: 172kg, 380lb
  10. Bore and Stroke: 101.6 mm × 92 mm (4.0 in × 3.62 in)
  11. Bore Centre: 111.76mm (4.40 in)
  12. Power Output: 362 horsepower at 5700 rpm and 391 lb-ft of torque at 4,400 rpm.
  13. Applications: Cars (Australia only) Police pursuit (USA)
YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
2010-2013HoldenVE Series 2
Commodore
Ute		6-Speed Manual (T-56) / 4-Speed Auto (4L60E)362/270 @ 5600391/530 @ 4400
2013-2015HoldenVF
Commodore
Ute		6-Speed Manual (T-56) / 4-Speed Auto (4L60E)362/270 @ 5600391/530 @ 4400
2010-2013HoldenWM Caprice6-Speed Manual (T-56) / 4-Speed Auto (4L60E)362/270@ 5600391/530 @ 4400
2013-2015HoldenWN Caprice4-Speed Auto (4L60E)362/ 270 @ 5600391/530 @ 4400
2011-2017ChevroletCaprice PPV4-Speed Auto (4L60E)362/270 @ 5600391/530 @ 4400

LY 6 (2007-2013) (VIN Code K) Gen 4

The LY6 is essentially an LQ4 updated to incorporate variable valve timing.

  1. Displacement: 6.0 liters, or approximately 364 ci
  2. Block Material: Cast Iron (Casting numbers 12576181)
  3. Cylinder Heads: Cast aluminum, Rectangle intake port design (Casting numbers 5364,823)
  4. Crankshaft and Rods: Cast iron crankshaft, Forged powder metal connecting rods
  5. Compression Ratio: 9.6:1
  6. Oil System: Wet sump
  7. Valve Train: Hydraulic roller camshaft, roller tip rockers, Variable Valve Timing
  8. Fuel Injection: Sequential fuel injection
  9. Weight: 219kg, 483lb
  10. Bore and Stroke: 101.6 mm × 92 mm (4.0 in × 3.62 in)
  11. Bore Centre: 111.76mm (4.40 in)
  12. Power Output: 364 horsepower at 5600 rpm and 383 lb-ft of torque at 4,400 rpm.
  13. Applications: Trucks
YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
2007-2009Chevrolet
GMC		Silverado (GMC Sierra) 2500HD, 3500HD6-Speed Manual (T-56) / 4-Speed Auto (4L60)364/ 272 @ 5600385 /522 @ 4400
2007-2013Chevrolet
GMC		Suburban 2500
Yukon XL		6-Speed Manual (T-56) / 4-Speed Auto (4L60)364/ 272 @ 5600385/522 @ 4400
2008-2009Chevrolet
GMC		Express 2500, 3500, 4500
Savana 2500, 3500, 4500		6-Speed Manual (T-56) / 4-Speed Auto (4L60E)325/ 242 @ 5200370/ 502 @ 4000
2002-2006ChevroletSuburban 2500 (GMC Yukon XL 2500)6-Speed Manual (T-56) / 4-Speed Auto (4L60E)320/242 @ 5200355/481   @ 4000

L 96 (2010-2020) (VIN Code G) Gen 4

The L96 was a further update to the LY6 to incorporate flex fuel capability

  1. Displacement: 6.0 liters, or approximately 364 ci
  2. Block Material: Cast Iron (Casting numbers 12576181)
  3. Cylinder Heads: Cast aluminum, Rectangle intake port design (Casting numbers 5364,823)
  4. Crankshaft and Rods: Cast iron crankshaft, Forged powder metal connecting rods
  5. Compression Ratio: 9.6:1
  6. Oil System: Wet sump
  7. Valve Train: Hydraulic roller camshaft, roller tip rockers, Variable Valve Timing
  8. Fuel Injection: Sequential fuel injection
  9. Weight: 219kg, 483lb
  10. Bore and Stroke: 101.6 mm × 92 mm (4.0 in × 3.62 in)
  11. Bore Centre: 111.76mm (4.40 in)
  12. Power Output: 364 horsepower at 5600 rpm and 383 lb-ft of torque at 4,400 rpm.
  13. Applications: Trucks
YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
2010-2019Chevrolet
GMC		Silverado (GMC Sierra) 2500HD, 3500HD6-Speed Manual (T-56) / 4-Speed Auto (4L60)364/ 272 @ 5600385 /522 @ 4400
2010-2013Chevrolet
GMC		Suburban 2500
Yukon XL		6-Speed Manual (T-56) / 4-Speed Auto (4L60)364/ 272 @ 5600385/522 @ 4400
2010-2020Chevrolet
GMC		Express 2500, 3500, 4500
Savana 2500, 3500, 4500		6-Speed Manual (T-56) / 4-Speed Auto (4L60E)325/ 242 @ 5200370/ 502 @ 4000
2016-2020ChevroletSuburban 3500HD6-Speed Manual (T-56) / 4-Speed Auto (4L60E)320/242 @ 5200355/481   @ 4000

LFA (2008-2009) (VIN Code 5) Gen 4

The LFA was an all aluminium truck engine is used in the GM’s “two-mode” hybrid GMT900 trucks and SUVs. It has a 10.8:1 compression ratio and produces 332 hp (248 kW) at 5100 rpm and 367 lb⋅ft (498 N⋅m) at 4100 rpm.

  1. Displacement: 6.0 liters, or approximately 364 ci
  2. Block Material: Cast Aluminium (Casting numbers 12568952)
  3. Cylinder Heads: Cast aluminum, Cathedral intake port design (Casting numbers 799,243)
  4. Crankshaft and Rods: Cast iron crankshaft, Forged powder metal connecting rods
  5. Compression Ratio: 10.8:1
  6. Oil System: Wet sump
  7. Valve Train: Hydraulic roller camshaft, roller tip rockers, Variable Valve Timing
  8. Fuel Injection: Sequential fuel injection
  9. Weight: 172kg, 380lb
  10. Bore and Stroke: 101.6 mm × 92 mm (4.0 in × 3.62 in)
  11. Bore Centre: 111.76mm (4.40 in)
  12. Power Output: 332 horsepower at 5100 rpm and 367 lb-ft of torque at 4,100 rpm.
  13. Applications: Trucks
YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
2008-2009Chevrolet
GMC		Tahoe Hybrid
(Yukon Hybrid)		6-Speed Manual (T-56) / 4-Speed Auto (4L60)332/ 248 @ 5100367 /497 @ 4100
2008-2009CadillacEscalade Hybrid6-Speed Manual (T-56) / 4-Speed Auto (4L60)332/ 248 @ 5100367/497 @ 4100
2008-2009Chevrolet
GMC		Silverado Hybrid
(Sierra Hybrid)		6-Speed Manual (T-56) / 4-Speed Auto (4L60E)332/ 248 @ 5100367/497 @ 4100

LZ1 (2010-2013) (VIN Code J) Gen 4

he LZ1 is an update to the LFA. Updates included electronic throttle control, long-life spark plugs, GM’s Oil Life System, Active Fuel Management, and variable valve timing. It has the same compression ratio and power/torque ratings as its predecessor.

  1. Displacement: 6.0 liters, or approximately 364 ci
  2. Block Material: Cast Aluminium (Casting numbers 12568952)
  3. Cylinder Heads: Cast aluminum, Cathedral intake port design (Casting numbers 799,243)
  4. Crankshaft and Rods: Cast iron crankshaft, Forged powder metal connecting rods
  5. Compression Ratio: 10.8:1
  6. Oil System: Wet sump
  7. Valve Train: Hydraulic roller camshaft, roller tip rockers, Variable Valve Timing
  8. Fuel Injection: Sequential fuel injection
  9. Weight: 172kg, 380lb
  10. Bore and Stroke: 101.6 mm × 92 mm (4.0 in × 3.62 in)
  11. Bore Centre: 111.76mm (4.40 in)
  12. Power Output: 332 horsepower at 5100 rpm and 367 lb-ft of torque at 4,100 rpm.
  13. Applications: Trucks
YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
2010-2013Chevrolet
GMC		Tahoe Hybrid
(Yukon Hybrid)		6-Speed Manual (T-56) / 4-Speed Auto (4L60)332/ 248 @ 5100367 /497 @ 4100
2010-2013CadillacEscalade Hybrid6-Speed Manual (T-56) / 4-Speed Auto (4L60)332/ 248 @ 5100367/497 @ 4100
2010-2013Chevrolet
GMC		Silverado Hybrid
(Sierra Hybrid)		6-Speed Manual (T-56) / 4-Speed Auto (4L60E)332/ 248 @ 5100367/497 @ 4100

LY 2 (2007-2009) (VIN Code C) Gen 4

The LY2 or Vortec 4800 is a Gen 4 update of the LR4 truck engine. Incorporating updates such as Electronic throttle control and long-life spark plugs.

  1. Displacement: 4.8 liters, or approximately 293 ci
  2. Block Material: Cast Iron (Casting numbers 12576177, 12576178, 1589779)
  3. Cylinder Heads: Cast aluminum, Cathedral intake port design (Casting numbers 799)
  4. Crankshaft and Rods: Cast iron crankshaft, Forged powder metal connecting rods
  5. Compression Ratio: 9.1:1 Flat top pistons
  6. Oil System: Wet sump
  7. Valve Train: Hydraulic roller camshaft, roller tip rockers
  8. Fuel Injection: Sequential fuel injection
  9. Weight: 195kg, 430lb
  10. Bore and Stroke: 96 mm × 83 mm (3.78 in × 3.267 in)
  11. Bore Centre: 111.76mm (4.40 in)
  12. Power Output: 260–295 hp (194–220 kW) and torque is 295–305 lb⋅ft (400–414 N⋅m).
  13. Applications: Trucks
YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
2007-2009Chevrolet
GMC		Silverado 1500, Tahoe (GMC Sierra 1500, Yukon)6-Speed Manual (T-56) / 4-Speed Auto (4L60)295/ 220 @ 5600305 /414 @ 4800
2008-2009Chevrolet
GMC		Express (GMC Savana 2500/3500)6-Speed Manual (T-56) / 4-Speed Auto (4L60)295/ 220 @ 5600305 /414 @ 4800

L 20 (2010-2017) (VIN Code A) Gen 4

The L20 or Vortec 4800 is an update to the LY 2 to incorporate variable valve timing.

  1. Displacement: 4.8 liters, or approximately 293 ci
  2. Block Material: Cast Iron (Casting numbers 12576177, 12576178, 1589779)
  3. Cylinder Heads: Cast aluminum, Cathedral intake port design (Casting numbers 799, 243)
  4. Crankshaft and Rods: Cast iron crankshaft, Forged powder metal connecting rods
  5. Compression Ratio: 8.8:1 Flat top pistons
  6. Oil System: Wet sump
  7. Valve Train: Hydraulic roller camshaft, roller tip rockers, Variable Valve Timing
  8. Fuel Injection: Sequential fuel injection
  9. Weight: 195kg, 430lb
  10. Bore and Stroke: 96 mm × 83 mm (3.78 in × 3.267 in)
  11. Bore Centre: 111.76mm (4.40 in)
  12. Power Output: 260–302 hp (194–225 kW) and torque is 295–305 lb⋅ft (400–414 N⋅m).
  13. Applications: Trucks
YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
2010-2013Chevrolet
GMC		Silverado 1500,(GMC Sierra 1500)6-Speed Manual (T-56) / 4-Speed Auto (4L60)302/ 225 @ 5600305 /414 @ 4800
2010-2017Chevrolet
GMC		Express (GMC Savana 2500/3500)6-Speed Manual (T-56) / 4-Speed Auto (4L60)302/ 225 @ 5600305 /414 @ 4800

LH 6 (2005-2009) (VIN Code M) Gen 4

The LH 6 or Vortec 5300 is a Gen 4 update of the LM4 truck engine. Incorporating updates such as Active Fuel Management, Electronic throttle control and long-life spark plugs.

  1. Displacement: 5.3 liters, or approximately 325 ci
  2. Block Material: Cast Aluminium (Casting numbers 125771048, 12601900, 12569513, 12568573)
  3. Cylinder Heads: Cast aluminum, Cathedral intake port design (Casting numbers 799, 243)
  4. Crankshaft and Rods: Cast iron crankshaft, Forged powder metal connecting rods
  5. Compression Ratio: 9.9:1 Flat top pistons
  6. Oil System: Wet sump
  7. Valve Train: Hydraulic roller camshaft, roller tip rockers
  8. Fuel Injection: Sequential fuel injection
  9. Weight: 177kg, 390lb
  10. Bore and Stroke: 96 mm × 92 mm (3.78 in × 3.62 in)
  11. Bore Centre: 111.76mm (4.40 in)
  12. Power Output: 315 horsepower at 5,200 rpm and 338 lb-ft of torque at 4,000 rpm.
  13. Applications: Trucks
YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
2005-2007IsuzuAscender6-Speed Manual (T-56) / 4-Speed Auto (4L60)315/235 @ 5200338/458 @ 4000
2005-2006GMCEnvoy XL6-Speed Manual (T-56) / 4-Speed Auto (4L60)315/235 @ 5200338/458 @ 4000
2005-2009GMCEnvoy Denali6-Speed Manual (T-56) / 4-Speed Auto (4L60E)315/235 @ 5200338/458 @ 4000
2005GMCEnvoy XUV6-Speed Manual (T-56) / 4-Speed Auto (4L60E)315/235 @ 5200338/458 @ 4000
2005-2007BuickRainier6-Speed Manual (T-56) / 4-Speed Auto (4L60E)315/235 @ 5200338/458 @ 4000
2005-2009ChevroletTrailblazer EXT6-Speed Manual (T-56) / 4-Speed Auto (4L60E)315/235 @ 5200338/458 @ 4000
2007-2009Chevrolet
GMC		Silverado
(GMC Sierra)		6-Speed Manual (T-56) / 4-Speed Auto (4L60)315/235 @ 5200338/458 @ 4000
2005-2009SAAB9-7x6-Speed Manual (T-56) / 4-Speed Auto (4L60)315/235 @ 5200338/458 @ 4000

LS 4 (2005-2009) (VIN Code C) Gen 4

The LS4 is 5.3L, alloy block engine designed specifically for front wheel drive applications and mounted transversely. It has a different bellhousing bolt pattern, shorter crankshaft, remote water pump and other differences to conventional rear wheel drive LS engines.

  1. Displacement: 5.3 liters, or approximately 325 ci
  2. Block Material: Cast Aluminium (Casting number 12569004)
  3. Cylinder Heads: Cast aluminum, Cathedral intake port design (Casting numbers 799, 243)
  4. Crankshaft and Rods: Cast iron crankshaft, Forged powder metal connecting rods
  5. Compression Ratio: 10:1 Flat top pistons
  6. Oil System: Wet sump
  7. Valve Train: Hydraulic roller camshaft, roller tip rockers
  8. Fuel Injection: Sequential fuel injection
  9. Weight: 177kg, 390lb
  10. Bore and Stroke: 96 mm × 92 mm (3.78 in × 3.62 in)
  11. Bore Centre: 111.76mm (4.40 in)
  12. Power Output: 303 horsepower at 5,200 rpm and 323 lb-ft of torque at 4,000 rpm.
  13. Applications: Front Wheel Drive Vehicles
YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
2005-2008PontiacGrand Prix GXP6-Speed Manual (T-56) / 4-Speed Auto (4T65E)303/ 226 @ 5600323 /438 @ 4400
2006-2009ChevroletImpala SS6-Speed Manual (T-56) / 4-Speed Auto (4T65E)303/ 226 @ 5600323/438 @ 4400
2006-2007ChevroletMonte Carlo SS6-Speed Manual (T-56) / 4-Speed Auto (4T65E)303/ 226 @ 5600323/438 @ 4000
2008-2009BuickLaCrosse Super6-Speed Manual (T-56) / 4-Speed Auto (4T65E)303/226 @ 5600323/438   @ 4000

LY 5 (2007-2009) (VIN Code J) Gen 4

The LY 5 or Vortec 5300 is a Gen 4 update of the LM7 truck engine. Incorporating updates such as Active Fuel Management, Electronic throttle control and long-life spark plugs.

  1. Displacement: 5.3 liters, or approximately 325 ci
  2. Block Material: Cast Iron (Casting numbers 12576177, 12576178, 1589779)
  3. Cylinder Heads: Cast aluminum, Cathedral intake port design (Casting numbers 799, 243)
  4. Crankshaft and Rods: Cast iron crankshaft, Forged powder metal connecting rods
  5. Compression Ratio: 9.9:1 Flat top pistons
  6. Oil System: Wet sump
  7. Valve Train: Hydraulic roller camshaft, roller tip rockers
  8. Fuel Injection: Sequential fuel injection
  9. Weight: 195kg, 430lb
  10. Bore and Stroke: 96 mm × 92 mm (3.78 in × 3.62 in)
  11. Bore Centre: 111.76mm (4.40 in)
  12. Power Output: LY 5 engines produced 315-320 horsepower at 5,200 rpm and 335-340 lb-ft of torque at 4,000 rpm in pickup trucks and SUV’s
  13. Applications: Trucks/SUV
YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
2007-2009ChevroletAvalanche, Silverado 1500, Suburban 1500
Tahoe		6-Speed Manual (T-56) / 4-Speed Auto (4L60)320/239 @ 5200340/461 @ 4000
2007-2009GMCSierra 1500, Yukon, Yukon XL 15006-Speed Manual (T-56) / 4-Speed Auto (4L60)320/239 @ 5200340/461 @ 4000

LC 9 (2007-2014) (VIN Code 3 or 7) Gen 4

The LC9 (Vortec 5300) is a further update to the LH 6 to incorporate flex-fuel. In 2010 variable valve timing was also added.

  1. Displacement: 5.3 liters, or approximately 325 ci
  2. Block Material: Cast Aluminium (Casting numbers 125771048, 12601900, 12569513, 12568573)
  3. Cylinder Heads: Cast aluminum, Cathedral intake port design (Casting numbers 799, 243)
  4. Crankshaft and Rods: Cast iron crankshaft, Forged powder metal connecting rods
  5. Compression Ratio: 9.9:1 (9.6:1 from 2010) Flat top pistons
  6. Oil System: Wet sump
  7. Valve Train: Hydraulic roller camshaft, roller tip rockers (Variable Valve Timing from 2010)
  8. Fuel Injection: Sequential fuel injection
  9. Weight: 177kg, 390lb
  10. Bore and Stroke: 96 mm × 92 mm (3.78 in × 3.62 in)
  11. Bore Centre: 111.76mm (4.40 in)
  12. Power Output: 315 horsepower at 5,200 rpm and 338 lb-ft of torque at 4,000 rpm.
  13. Applications: Trucks
YearMakeModelTransmissionPower (hp / kW @ RPM)Torque (lb-ft / Nm @ RPM)
2007-2013ChevroletAvalanche, Silverado 15006-Speed Manual (T-56) / 4-Speed Auto (4T65E)315/ 235 @ 5200338 /458 @ 4400
2007-2014ChevroletSuburban 1/2 Ton6-Speed Manual (T-56) / 4-Speed Auto (4T65E)315/ 235 @ 5200338/458 @ 4400
2007-2013GMCSierra 15006-Speed Manual (T-56) / 4-Speed Auto (4T65E)315/ 235 @ 5200338/458 @ 4000
2007-2014GMCYukon XL 1/2 Ton6-Speed Manual (T-56) / 4-Speed Auto (4T65E)315/235 @ 5200338/458   @ 4000

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