STICKY? Where to get an LSx engine? Look!
11-10-2009, 12:36 PM
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STICKY? Where to get an LSx engine? Look! MAIN GOAL of this thread: To inform people on WHERE they can find an GM LSx engine for their swap! Not technically the names of all, but where to source a block.
How many times have we heard this: I WANT TO DO A SWAP, BUT CAN'T FIND AN ENGINE!
Well, besides craigslist, Fleabay, and local junk yards, it helps to know what kind of vehicles to look in! Here's a list. Please add if you have more that i missed.
~ Reference Link ~ Lots more reading material on names of engines.
www.car-part.com is an online directory of salvage yards and lists availability of parts by distance and price.
Simply put, the true LSx engine is an aluminum block
The iron blocks are truck engines, but just as capable. Weight difference is only 65lbs
Truck engines short blocks are esentially the same with small differences like:
~Serpentine system (vette's accy's closest, then F-body's, then Trucks stick out far)
~Intake manifolds (trucks' tallest)
~Exhaust manifolds (each application is different, TONS of them out there)
~Sensors. (several differences. With the right harness, and PCM, makes the swap job simple
Here's the list i've compiled.
The engines come in sizes:
4.8L
5.3L
5.7L
6.0L
6.2L (cadillac only)
Vortec 4800, 5300, 5700, 6000, 6200
Names: LS1, LS2, LS3, LS6, LS7, LQ4, LQ9, etc
TRUE LS1:
1997-current Chevy5.7L, 6.0L, 7.0L
Corvette
1998-2004 Chevy/Pontiac5.7L
Camaro
Trans Am
2004-2009 Cadillac 6.0L
CTS-v
Iron LSx engines (still just as good)
1999-current Chevy: 4.8, 5.3, 5.7, 6.0L
Silverado 1500, 2500, 3500
Avalanche
Suburban
Tahoe
Express Van
SSR
1999- Current CadilLac5.3, 5.7, 6.0, 6.2L
Escalade (99-current)
CTS-V (04-09)
1999-current GMC4.8, 5.3, 5.7, 6.0L
Envoy
Suburban
Yukon
Savana Van
2003-current Hummer5.3L, 6.0L
H2
2006-current Hummer5.3L
H3
Gen 4 engines4.8, 5.3, 5.7, 6.0L
2005-2006 Pontiac GTO
2006-2007 Cadillac CTS-V
2005-2007 Chevrolet Corvette
2005-2006 Chevrolet SSR
2006-2009 Chevrolet TrailBlazer SS
2005-2007 Holden Special Vehicles (all V8 models)
2008-2009 Saab 9-7X Aero
2005-2006 Vauxhall Monaro VXR
There are a few Front wheel drive vehicles with LSx engines, but they don't swap easy, and the block castings are different.
Such as:
Impala, Monte Carlo, Buick Lacrosse, and the Grand Prix
Truck motors come in aluminum as well, note L33, L92, L76 amoung a few.
LSx is generic for Gen III/IV motors. So fake LSx is a misnomer. Vortec is much better term for the truck motors.
Car-part.com and search for the engine you want by model.
RPO codes
GENERATION III
LS1 - 5.7 (346 CI) - Between 305-350 hp and 335-375 ft·lb
1997-2004 Chevrolet Corvette C5, excluding Z06
1998-2002 Chevrolet Camaro Z28, SS
1998-2002 Pontiac Firebird Formula, Trans Am, Trans Am WS6
2004 Pontiac GTO
*97-98 Had Perimeter Bolt Valve Covers
LS6 - 5.7 (346 CI) - 385(01 Vette only)/405 hp and 385(01 only)/400 ft-lbs.
2001-2004 Chevrolet Corvette C5 Z06
2004-2005 Cadillac CTS V-Series
*Basically the same as an LS1 but with better heads (243 head castings) a more aggressive cam, and LS6 intake manifold make up the power differences.
TRUCK ENGINES - STILL GENERATION III
The truck engines are very much like the LS1/LS6 and are still classified as a Gen III engine. They are mainly iron with the exception of the LM4/L33, and as a result weigh approximately 80+ lbs. more. All the parts from the LS series can bolt on to these engines and is recommended for any swap as the accessories and intake manifold usually fit better from an F-body. The 4.8 and 5.3 can both be punched out to a 5.7 (346 Cubic Inches) simply with a bigger bore (the 5.3) or a bigger bore and the 5.3 crank (in the 4.8's case).
4.8 - LR4
5.3 - LM4, LM7, L33, L59
6.0 - LQ4, LQ9
LR4 - 270-295 hp and 285-305 ft·lb
*Iron Block
2003-present Chevrolet Express 2500-3500/GMC Savana 2500-3500
1999-2007 Chevrolet Silverado/GMC Sierra
1999-2006 Chevrolet Tahoe/GMC Yukon
LM7 - 285-295 hp 325-335 ft·lb
*Most common 3rd gen LSx engine - Iron Block
2002-2005 Cadillac Escalade 2WD
2002-2006 Chevrolet Avalanche
2003-2007 Chevrolet Express/GMC Savana
1999-2007 Chevrolet Silverado 1500
1999-2007 GMC Sierra 1500
1999-2006 Chevrolet Suburban/GMC Yukon XL
1999-2006 Chevrolet Tahoe/GMC Yukon
LM4 - Identical to the LM7 in power/torque
*Aluminum Block, limited production
2004 Chevrolet TrailBlazer EXT
2004 GMC Envoy XL
2004 Chevrolet SSR
L33 - 310 hp - High Output version of the LM7
*Aluminum Block
2005-2007 Chevrolet Silverado 1500 4WD
2005-2007 GMC Sierra 1500 4WD
L59 - Flex Fuel version of the LM7 (power/torque same)
2002-2007 Chevrolet Silverado 1500
2002-2006 Chevrolet Tahoe/GMC Yukon
2002-2006 Chevrolet Suburban/GMC Yukon XL
2002-2007 GMC Sierra 1500
LQ4 - 6.0L (364 CI) - 300-325 hp / 360-370 ft·lb
*Iron Block
Chevrolet Express/GMC Savana
Chevrolet Silverado 2500 Pickup, 3500 Pickup, Crew Cab, and Chassis Cab/GMC Sierra 2500 HD Pickup and Crew Cab, C3, Denali, and 3500 Pickup and Chassis Cab, 1500HD Crew Cab
Chevrolet Suburban/GMC Yukon XL Denali
Hummer H2 SUT
GMC Yukon Denali
LQ9 - 6.0L (364 CI) - 345hp / 380 ft·lb
*Iron Block
2002-2006 Cadillac Escalade
2002-2006 Cadillac Escalade EXT
2003-2006 Cadillac Escalade ESV
2003-2007 Chevrolet Silverado SS
2004-2005 Chevrolet Silverado and GMC Sierra Vortec HO Edition Only 2006-2007 Chevrolet Silverado and GMC Sierra VortecMAX Option
GENERATION IV - Generation IV engines are very similar to Gen III and most parts can be interchanged. The Gen IV was produced with displacement on demand and variable valve timing in mind. Not all have these features, but they are available. Also they have a 58x crank trigger, front cam sensor, and side mounted Knock sensors.
L76 - 360hp /385 ft-lbs. 6.0L (364 Cubic Inches)
2008 Pontiac G8
L98 - 362hp /391 ft-lbs. 6.0L (364 Cubic Inches)
2007-2008 Chevrolet Lumina SS
2007-2008 Chevrolet Caprice SS
L99 - 400hp /395 ft-lbs. 6.0L (364 Cubic Inches)
*Derived from the LS3 and with Displacement on Demand
2010 Chevrolet Camaro
LS2 - 6.0L (364 CI) - 400 hp/400 ft.-lbs.
2006-2007 Cadillac CTS-V
2005-2007 Chevrolet Corvette
2005-2006 Chevrolet SSR
2006-2008 Chevrolet TrailBlazer SS
2004-2007 Holden Special Vehicles (all V8 models)
2005-2006 Pontiac GTO
2008-2010? Saab 9-7X Aero
2005-2006 Vauxhall Monaro VXR
LS3 - 6.2L (376 CI) - 430 hp / 424 ft.-lbs.
April 2008-present Holden Special Vehicles (all V8 models)
2008-present Chevrolet Corvette
2009 Pontiac G8 GXP
2010 Chevrolet Camaro
LS4 - 5.3L (325 CI) - 303 hp / 323 ft.-lbs.
2006-2008 Chevrolet Impala SS
2006-2007 Chevrolet Monte Carlo SS
2005-2008 Pontiac Grand Prix GXP
2008 Buick LaCrosse Super
*Aluminum FWD Block w/ LS6 Heads
LS7 - 7.0L (427 CI) - 505 hp / 470 ft.-lbs.
2006-2008 Chevrolet Corvette Z06
2008 HSV W427
LS9 - 6.2L (376 CI) Supercharged - 638 hp / 604 ft.-lbs.
*Based on the LS3
2009 Chevrolet Corvette ZR1
TRUCK ENGINES - GENERATION IV
LY2- 4.8 2007-present Silverado/Sierra, Express/Savana , Tahoe/Yukon
LMG- 5.3 (Iron block/AFM/FF) 2007-present Silverado
LH6- 5.3 (Alum block/AFM) 2005-present TB/Envoy, 2007-present Silverado
LC9- 5.3 (Iron block/AFM/FF) 2007-present Silverado
LY5- 5.3 (Alum block/AFM/FF) 2007-present Silverado
LH8- 5.3 (Alum block) H3 Alpha, Colorado/Canyon
LY6 - 6.0 (364 CI) - Same as LQ4, but Gen IV.
*Variable Valve Timing
2007-present Chevrolet Silverado HD
2007-present GMC Sierra HD
2007-present Chevrolet Suburban 3/4 ton
2007-present GMC Yukon XL 3/4 ton
L76 - 6.0 (364 CI) - 367hp / 375 ft.-lbs.
*Basically the Gen IV replacement for the LQ9
*Variable Cam Phasing & Active Fuel Management
2007-present Chevrolet Suburban
2007-present Chevrolet Avalanche
2007-present Chevrolet Silverado
2007-present GMC Sierra
2007-present GMC Yukon XL
LFA - 6.0 (364 CI) - 332 hp / 367 ft.-lbs.
*Active Fuel Management
*Late-intake valve timing system
*Higher 10.8:1 compression ratio
2008-present Chevrolet Tahoe Hybrid
2008-present GMC Yukon Hybrid
2009-present Cadillac Escalade Hybrid
2009-present Chevrolet Silverado Hybrid
2009-present GMC Sierra Hybrid
L92 - 6.2L (376 CI) - 380/403 hp and 403/415 ft.-lbs.
2007-08 Cadillac Escalade
2008 Chevrolet Tahoe
2007-08 GMC Sierra Denali
2008 Hummer H2
2007-09 GMC Yukon Denali/Denali XL
L9H- 6.2L (376 CI)
2009 Cadillac Escalade
2009 GMC Sierra Denali
2009 Hummer H2
2009 GMC Yukon Denali/Denali XL
2009 Silverado LTZ, Tahoe LTZ
----------------------------------------------------------------------
Quick summary of the major engines and their compression ratios and GM part #s:
LS1...346c.i. 5.7L 10.19:1 25534322
LS6...346c.i. 5.7L 10.46:1 12578104/12562190
LR4...293c.i. 4.8L 9.47:1
LM4...325c.i 5.3L 9.49:1
LM7...325c.i 5.3L 9.49:1 12562201
L59...325c.i. 5.3L 9.49:1
LQ4...364c.i. 6.0L 9.41:1 12575147/12575148
LQ9...364c.i. 6.0L 10.08:1 12499467
How many times have we heard this: I WANT TO DO A SWAP, BUT CAN'T FIND AN ENGINE!
Well, besides craigslist, Fleabay, and local junk yards, it helps to know what kind of vehicles to look in! Here's a list. Please add if you have more that i missed.
~ Reference Link ~ Lots more reading material on names of engines.
www.car-part.com is an online directory of salvage yards and lists availability of parts by distance and price.
Simply put, the true LSx engine is an aluminum block
The iron blocks are truck engines, but just as capable. Weight difference is only 65lbs
Truck engines short blocks are esentially the same with small differences like:
~Serpentine system (vette's accy's closest, then F-body's, then Trucks stick out far)
~Intake manifolds (trucks' tallest)
~Exhaust manifolds (each application is different, TONS of them out there)
~Sensors. (several differences. With the right harness, and PCM, makes the swap job simple
Here's the list i've compiled.
The engines come in sizes:
4.8L
5.3L
5.7L
6.0L
6.2L (cadillac only)
Vortec 4800, 5300, 5700, 6000, 6200
Names: LS1, LS2, LS3, LS6, LS7, LQ4, LQ9, etc
TRUE LS1:
1997-current Chevy5.7L, 6.0L, 7.0L
Corvette
1998-2004 Chevy/Pontiac5.7L
Camaro
Trans Am
2004-2009 Cadillac 6.0L
CTS-v
Iron LSx engines (still just as good)
1999-current Chevy: 4.8, 5.3, 5.7, 6.0L
Silverado 1500, 2500, 3500
Avalanche
Suburban
Tahoe
Express Van
SSR
1999- Current CadilLac5.3, 5.7, 6.0, 6.2L
Escalade (99-current)
CTS-V (04-09)
1999-current GMC4.8, 5.3, 5.7, 6.0L
Envoy
Suburban
Yukon
Savana Van
2003-current Hummer5.3L, 6.0L
H2
2006-current Hummer5.3L
H3
Gen 4 engines4.8, 5.3, 5.7, 6.0L
2005-2006 Pontiac GTO
2006-2007 Cadillac CTS-V
2005-2007 Chevrolet Corvette
2005-2006 Chevrolet SSR
2006-2009 Chevrolet TrailBlazer SS
2005-2007 Holden Special Vehicles (all V8 models)
2008-2009 Saab 9-7X Aero
2005-2006 Vauxhall Monaro VXR
There are a few Front wheel drive vehicles with LSx engines, but they don't swap easy, and the block castings are different.
Such as:
Impala, Monte Carlo, Buick Lacrosse, and the Grand Prix
Truck motors come in aluminum as well, note L33, L92, L76 amoung a few.
LSx is generic for Gen III/IV motors. So fake LSx is a misnomer. Vortec is much better term for the truck motors.
Car-part.com and search for the engine you want by model.
RPO codes
GENERATION III
LS1 - 5.7 (346 CI) - Between 305-350 hp and 335-375 ft·lb
1997-2004 Chevrolet Corvette C5, excluding Z06
1998-2002 Chevrolet Camaro Z28, SS
1998-2002 Pontiac Firebird Formula, Trans Am, Trans Am WS6
2004 Pontiac GTO
*97-98 Had Perimeter Bolt Valve Covers
LS6 - 5.7 (346 CI) - 385(01 Vette only)/405 hp and 385(01 only)/400 ft-lbs.
2001-2004 Chevrolet Corvette C5 Z06
2004-2005 Cadillac CTS V-Series
*Basically the same as an LS1 but with better heads (243 head castings) a more aggressive cam, and LS6 intake manifold make up the power differences.
TRUCK ENGINES - STILL GENERATION III
The truck engines are very much like the LS1/LS6 and are still classified as a Gen III engine. They are mainly iron with the exception of the LM4/L33, and as a result weigh approximately 80+ lbs. more. All the parts from the LS series can bolt on to these engines and is recommended for any swap as the accessories and intake manifold usually fit better from an F-body. The 4.8 and 5.3 can both be punched out to a 5.7 (346 Cubic Inches) simply with a bigger bore (the 5.3) or a bigger bore and the 5.3 crank (in the 4.8's case).
4.8 - LR4
5.3 - LM4, LM7, L33, L59
6.0 - LQ4, LQ9
LR4 - 270-295 hp and 285-305 ft·lb
*Iron Block
2003-present Chevrolet Express 2500-3500/GMC Savana 2500-3500
1999-2007 Chevrolet Silverado/GMC Sierra
1999-2006 Chevrolet Tahoe/GMC Yukon
LM7 - 285-295 hp 325-335 ft·lb
*Most common 3rd gen LSx engine - Iron Block
2002-2005 Cadillac Escalade 2WD
2002-2006 Chevrolet Avalanche
2003-2007 Chevrolet Express/GMC Savana
1999-2007 Chevrolet Silverado 1500
1999-2007 GMC Sierra 1500
1999-2006 Chevrolet Suburban/GMC Yukon XL
1999-2006 Chevrolet Tahoe/GMC Yukon
LM4 - Identical to the LM7 in power/torque
*Aluminum Block, limited production
2004 Chevrolet TrailBlazer EXT
2004 GMC Envoy XL
2004 Chevrolet SSR
L33 - 310 hp - High Output version of the LM7
*Aluminum Block
2005-2007 Chevrolet Silverado 1500 4WD
2005-2007 GMC Sierra 1500 4WD
L59 - Flex Fuel version of the LM7 (power/torque same)
2002-2007 Chevrolet Silverado 1500
2002-2006 Chevrolet Tahoe/GMC Yukon
2002-2006 Chevrolet Suburban/GMC Yukon XL
2002-2007 GMC Sierra 1500
LQ4 - 6.0L (364 CI) - 300-325 hp / 360-370 ft·lb
*Iron Block
Chevrolet Express/GMC Savana
Chevrolet Silverado 2500 Pickup, 3500 Pickup, Crew Cab, and Chassis Cab/GMC Sierra 2500 HD Pickup and Crew Cab, C3, Denali, and 3500 Pickup and Chassis Cab, 1500HD Crew Cab
Chevrolet Suburban/GMC Yukon XL Denali
Hummer H2 SUT
GMC Yukon Denali
LQ9 - 6.0L (364 CI) - 345hp / 380 ft·lb
*Iron Block
2002-2006 Cadillac Escalade
2002-2006 Cadillac Escalade EXT
2003-2006 Cadillac Escalade ESV
2003-2007 Chevrolet Silverado SS
2004-2005 Chevrolet Silverado and GMC Sierra Vortec HO Edition Only 2006-2007 Chevrolet Silverado and GMC Sierra VortecMAX Option
GENERATION IV - Generation IV engines are very similar to Gen III and most parts can be interchanged. The Gen IV was produced with displacement on demand and variable valve timing in mind. Not all have these features, but they are available. Also they have a 58x crank trigger, front cam sensor, and side mounted Knock sensors.
L76 - 360hp /385 ft-lbs. 6.0L (364 Cubic Inches)
2008 Pontiac G8
L98 - 362hp /391 ft-lbs. 6.0L (364 Cubic Inches)
2007-2008 Chevrolet Lumina SS
2007-2008 Chevrolet Caprice SS
L99 - 400hp /395 ft-lbs. 6.0L (364 Cubic Inches)
*Derived from the LS3 and with Displacement on Demand
2010 Chevrolet Camaro
LS2 - 6.0L (364 CI) - 400 hp/400 ft.-lbs.
2006-2007 Cadillac CTS-V
2005-2007 Chevrolet Corvette
2005-2006 Chevrolet SSR
2006-2008 Chevrolet TrailBlazer SS
2004-2007 Holden Special Vehicles (all V8 models)
2005-2006 Pontiac GTO
2008-2010? Saab 9-7X Aero
2005-2006 Vauxhall Monaro VXR
LS3 - 6.2L (376 CI) - 430 hp / 424 ft.-lbs.
April 2008-present Holden Special Vehicles (all V8 models)
2008-present Chevrolet Corvette
2009 Pontiac G8 GXP
2010 Chevrolet Camaro
LS4 - 5.3L (325 CI) - 303 hp / 323 ft.-lbs.
2006-2008 Chevrolet Impala SS
2006-2007 Chevrolet Monte Carlo SS
2005-2008 Pontiac Grand Prix GXP
2008 Buick LaCrosse Super
*Aluminum FWD Block w/ LS6 Heads
LS7 - 7.0L (427 CI) - 505 hp / 470 ft.-lbs.
2006-2008 Chevrolet Corvette Z06
2008 HSV W427
LS9 - 6.2L (376 CI) Supercharged - 638 hp / 604 ft.-lbs.
*Based on the LS3
2009 Chevrolet Corvette ZR1
TRUCK ENGINES - GENERATION IV
LY2- 4.8 2007-present Silverado/Sierra, Express/Savana , Tahoe/Yukon
LMG- 5.3 (Iron block/AFM/FF) 2007-present Silverado
LH6- 5.3 (Alum block/AFM) 2005-present TB/Envoy, 2007-present Silverado
LC9- 5.3 (Iron block/AFM/FF) 2007-present Silverado
LY5- 5.3 (Alum block/AFM/FF) 2007-present Silverado
LH8- 5.3 (Alum block) H3 Alpha, Colorado/Canyon
LY6 - 6.0 (364 CI) - Same as LQ4, but Gen IV.
*Variable Valve Timing
2007-present Chevrolet Silverado HD
2007-present GMC Sierra HD
2007-present Chevrolet Suburban 3/4 ton
2007-present GMC Yukon XL 3/4 ton
L76 - 6.0 (364 CI) - 367hp / 375 ft.-lbs.
*Basically the Gen IV replacement for the LQ9
*Variable Cam Phasing & Active Fuel Management
2007-present Chevrolet Suburban
2007-present Chevrolet Avalanche
2007-present Chevrolet Silverado
2007-present GMC Sierra
2007-present GMC Yukon XL
LFA - 6.0 (364 CI) - 332 hp / 367 ft.-lbs.
*Active Fuel Management
*Late-intake valve timing system
*Higher 10.8:1 compression ratio
2008-present Chevrolet Tahoe Hybrid
2008-present GMC Yukon Hybrid
2009-present Cadillac Escalade Hybrid
2009-present Chevrolet Silverado Hybrid
2009-present GMC Sierra Hybrid
L92 - 6.2L (376 CI) - 380/403 hp and 403/415 ft.-lbs.
2007-08 Cadillac Escalade
2008 Chevrolet Tahoe
2007-08 GMC Sierra Denali
2008 Hummer H2
2007-09 GMC Yukon Denali/Denali XL
L9H- 6.2L (376 CI)
2009 Cadillac Escalade
2009 GMC Sierra Denali
2009 Hummer H2
2009 GMC Yukon Denali/Denali XL
2009 Silverado LTZ, Tahoe LTZ
----------------------------------------------------------------------
Quick summary of the major engines and their compression ratios and GM part #s:
LS1...346c.i. 5.7L 10.19:1 25534322
LS6...346c.i. 5.7L 10.46:1 12578104/12562190
LR4...293c.i. 4.8L 9.47:1
LM4...325c.i 5.3L 9.49:1
LM7...325c.i 5.3L 9.49:1 12562201
L59...325c.i. 5.3L 9.49:1
LQ4...364c.i. 6.0L 9.41:1 12575147/12575148
LQ9...364c.i. 6.0L 10.08:1 12499467
Last edited by TurboBandit; 11-11-2009 at 12:02 PM.
11-10-2009, 01:17 PM
#3
TECH Fanatic
Truck motors come in aluminum as well, note L33, L92, L76 amoung a few.
LSx is generic for Gen III/IV motors. So fake LSx is a misnomer. Vortec is much better term for the truck motors.
Car-part.com and search for the engine you want by model.
RPO codes
GENERATION III
LS1 - 5.7 (346 CI) - Between 305-350 hp and 335-375 ft·lb
1997-2004 Chevrolet Corvette C5, excluding Z06
1998-2002 Chevrolet Camaro Z28, SS
1998-2002 Pontiac Firebird Formula, Trans Am, Trans Am WS6
2004 Pontiac GTO
*97-98 Had Perimeter Bolt Valve Covers
LS6 - 5.7 (346 CI) - 385(01 Vette only)/405 hp and 385(01 only)/400 ft-lbs.
2001-2004 Chevrolet Corvette C5 Z06
2004-2005 Cadillac CTS V-Series
*Basically the same as an LS1 but with better heads (243 head castings) a more aggressive cam, and LS6 intake manifold make up the power differences.
TRUCK ENGINES - STILL GENERATION III
The truck engines are very much like the LS1/LS6 and are still classified as a Gen III engine. They are mainly iron with the exception of the LM4/L33, and as a result weigh approximately 80+ lbs. more. All the parts from the LS series can bolt on to these engines and is recommended for any swap as the accessories and intake manifold usually fit better from an F-body. The 4.8 and 5.3 can both be punched out to a 5.7 (346 Cubic Inches) simply with a bigger bore (the 5.3) or a bigger bore and the 5.3 crank (in the 4.8's case).
4.8 - LR4
5.3 - LM4, LM7, L33, L59
6.0 - LQ4, LQ9
LR4 - 270-295 hp and 285-305 ft·lb
*Iron Block
2003-present Chevrolet Express 2500-3500/GMC Savana 2500-3500
1999-2007 Chevrolet Silverado/GMC Sierra
1999-2006 Chevrolet Tahoe/GMC Yukon
LM7 - 285-295 hp 325-335 ft·lb
*Most common 3rd gen LSx engine - Iron Block
2002-2005 Cadillac Escalade 2WD
2002-2006 Chevrolet Avalanche
2003-2007 Chevrolet Express/GMC Savana
1999-2007 Chevrolet Silverado 1500
1999-2007 GMC Sierra 1500
1999-2006 Chevrolet Suburban/GMC Yukon XL
1999-2006 Chevrolet Tahoe/GMC Yukon
LM4 - Identical to the LM7 in power/torque
*Aluminum Block, limited production
2004 Chevrolet TrailBlazer EXT
2004 GMC Envoy XL
2004 Chevrolet SSR
L33 - 310 hp - High Output version of the LM7
*Aluminum Block
2005-2007 Chevrolet Silverado 1500 4WD
2005-2007 GMC Sierra 1500 4WD
L59 - Flex Fuel version of the LM7 (power/torque same)
2002-2007 Chevrolet Silverado 1500
2002-2006 Chevrolet Tahoe/GMC Yukon
2002-2006 Chevrolet Suburban/GMC Yukon XL
2002-2007 GMC Sierra 1500
LQ4 - 6.0L (364 CI) - 300-325 hp / 360-370 ft·lb
*Iron Block
Chevrolet Express/GMC Savana
Chevrolet Silverado 2500 Pickup, 3500 Pickup, Crew Cab, and Chassis Cab/GMC Sierra 2500 HD Pickup and Crew Cab, C3, Denali, and 3500 Pickup and Chassis Cab, 1500HD Crew Cab
Chevrolet Suburban/GMC Yukon XL Denali
Hummer H2 SUT
GMC Yukon Denali
LQ9 - 6.0L (364 CI) - 345hp / 380 ft·lb
*Iron Block
2002-2006 Cadillac Escalade
2002-2006 Cadillac Escalade EXT
2003-2006 Cadillac Escalade ESV
2003-2007 Chevrolet Silverado SS
2004-2005 Chevrolet Silverado and GMC Sierra Vortec HO Edition Only 2006-2007 Chevrolet Silverado and GMC Sierra VortecMAX Option
GENERATION IV - Generation IV engines are very similar to Gen III and most parts can be interchanged. The Gen IV was produced with displacement on demand and variable valve timing in mind. Not all have these features, but they are available. Also they have a 58x crank trigger, front cam sensor, and side mounted Knock sensors.
L76 - 360hp /385 ft-lbs. 6.0L (364 Cubic Inches)
2008 Pontiac G8
L98 - 362hp /391 ft-lbs. 6.0L (364 Cubic Inches)
2007-2008 Chevrolet Lumina SS
2007-2008 Chevrolet Caprice SS
L99 - 400hp /395 ft-lbs. 6.0L (364 Cubic Inches)
*Derived from the LS3 and with Displacement on Demand
2010 Chevrolet Camaro
LS2 - 6.0L (364 CI) - 400 hp/400 ft.-lbs.
2006-2007 Cadillac CTS-V
2005-2007 Chevrolet Corvette
2005-2006 Chevrolet SSR
2006-2008 Chevrolet TrailBlazer SS
2004-2007 Holden Special Vehicles (all V8 models)
2005-2006 Pontiac GTO
2008-2010? Saab 9-7X Aero
2005-2006 Vauxhall Monaro VXR
LS3 - 6.2L (376 CI) - 430 hp / 424 ft.-lbs.
April 2008-present Holden Special Vehicles (all V8 models)
2008-present Chevrolet Corvette
2009 Pontiac G8 GXP
2010 Chevrolet Camaro
LS4 - 5.3L (325 CI) - 303 hp / 323 ft.-lbs.
2006-2008 Chevrolet Impala SS
2006-2007 Chevrolet Monte Carlo SS
2005-2008 Pontiac Grand Prix GXP
2008 Buick LaCrosse Super
*Aluminum FWD Block w/ LS6 Heads
LS7 - 7.0L (427 CI) - 505 hp / 470 ft.-lbs.
2006-2008 Chevrolet Corvette Z06
2008 HSV W427
LS9 - 6.2L (376 CI) Supercharged - 638 hp / 604 ft.-lbs.
*Based on the LS3
2009 Chevrolet Corvette ZR1
TRUCK ENGINES - GENERATION IV
LY2- 4.8 2007-present Silverado/Sierra, Express/Savana , Tahoe/Yukon
LMG- 5.3 (Iron block/AFM/FF) 2007-present Silverado
LH6- 5.3 (Alum block/AFM) 2005-present TB/Envoy, 2007-present Silverado
LC9- 5.3 (Iron block/AFM/FF) 2007-present Silverado
LY5- 5.3 (Alum block/AFM/FF) 2007-present Silverado
LH8- 5.3 (Alum block) H3 Alpha, Colorado/Canyon
LY6 - 6.0 (364 CI) - Same as LQ4, but Gen IV.
*Variable Valve Timing
2007-present Chevrolet Silverado HD
2007-present GMC Sierra HD
2007-present Chevrolet Suburban 3/4 ton
2007-present GMC Yukon XL 3/4 ton
L76 - 6.0 (364 CI) - 367hp / 375 ft.-lbs.
*Basically the Gen IV replacement for the LQ9
*Variable Cam Phasing & Active Fuel Management
2007-present Chevrolet Suburban
2007-present Chevrolet Avalanche
2007-present Chevrolet Silverado
2007-present GMC Sierra
2007-present GMC Yukon XL
LFA - 6.0 (364 CI) - 332 hp / 367 ft.-lbs.
*Active Fuel Management
*Late-intake valve timing system
*Higher 10.8:1 compression ratio
2008-present Chevrolet Tahoe Hybrid
2008-present GMC Yukon Hybrid
2009-present Cadillac Escalade Hybrid
2009-present Chevrolet Silverado Hybrid
2009-present GMC Sierra Hybrid
L92 - 6.2L (376 CI) - 380/403 hp and 403/415 ft.-lbs.
2007-08 Cadillac Escalade
2008 Chevrolet Tahoe
2007-08 GMC Sierra Denali
2008 Hummer H2
2007-09 GMC Yukon Denali/Denali XL
L9H- 6.2L (376 CI)
2009 Cadillac Escalade
2009 GMC Sierra Denali
2009 Hummer H2
2009 GMC Yukon Denali/Denali XL
2009 Silverado LTZ, Tahoe LTZ
----------------------------------------------------------------------
Quick summary of the major engines and their compression ratios and GM part #s:
LS1...346c.i. 5.7L 10.19:1 25534322
LS6...346c.i. 5.7L 10.46:1 12578104/12562190
LR4...293c.i. 4.8L 9.47:1
LM4...325c.i 5.3L 9.49:1
LM7...325c.i 5.3L 9.49:1 12562201
L59...325c.i. 5.3L 9.49:1
LQ4...364c.i. 6.0L 9.41:1 12575147/12575148
LQ9...364c.i. 6.0L 10.08:1 12499467
LSx is generic for Gen III/IV motors. So fake LSx is a misnomer. Vortec is much better term for the truck motors.
Car-part.com and search for the engine you want by model.
RPO codes
GENERATION III
LS1 - 5.7 (346 CI) - Between 305-350 hp and 335-375 ft·lb
1997-2004 Chevrolet Corvette C5, excluding Z06
1998-2002 Chevrolet Camaro Z28, SS
1998-2002 Pontiac Firebird Formula, Trans Am, Trans Am WS6
2004 Pontiac GTO
*97-98 Had Perimeter Bolt Valve Covers
LS6 - 5.7 (346 CI) - 385(01 Vette only)/405 hp and 385(01 only)/400 ft-lbs.
2001-2004 Chevrolet Corvette C5 Z06
2004-2005 Cadillac CTS V-Series
*Basically the same as an LS1 but with better heads (243 head castings) a more aggressive cam, and LS6 intake manifold make up the power differences.
TRUCK ENGINES - STILL GENERATION III
The truck engines are very much like the LS1/LS6 and are still classified as a Gen III engine. They are mainly iron with the exception of the LM4/L33, and as a result weigh approximately 80+ lbs. more. All the parts from the LS series can bolt on to these engines and is recommended for any swap as the accessories and intake manifold usually fit better from an F-body. The 4.8 and 5.3 can both be punched out to a 5.7 (346 Cubic Inches) simply with a bigger bore (the 5.3) or a bigger bore and the 5.3 crank (in the 4.8's case).
4.8 - LR4
5.3 - LM4, LM7, L33, L59
6.0 - LQ4, LQ9
LR4 - 270-295 hp and 285-305 ft·lb
*Iron Block
2003-present Chevrolet Express 2500-3500/GMC Savana 2500-3500
1999-2007 Chevrolet Silverado/GMC Sierra
1999-2006 Chevrolet Tahoe/GMC Yukon
LM7 - 285-295 hp 325-335 ft·lb
*Most common 3rd gen LSx engine - Iron Block
2002-2005 Cadillac Escalade 2WD
2002-2006 Chevrolet Avalanche
2003-2007 Chevrolet Express/GMC Savana
1999-2007 Chevrolet Silverado 1500
1999-2007 GMC Sierra 1500
1999-2006 Chevrolet Suburban/GMC Yukon XL
1999-2006 Chevrolet Tahoe/GMC Yukon
LM4 - Identical to the LM7 in power/torque
*Aluminum Block, limited production
2004 Chevrolet TrailBlazer EXT
2004 GMC Envoy XL
2004 Chevrolet SSR
L33 - 310 hp - High Output version of the LM7
*Aluminum Block
2005-2007 Chevrolet Silverado 1500 4WD
2005-2007 GMC Sierra 1500 4WD
L59 - Flex Fuel version of the LM7 (power/torque same)
2002-2007 Chevrolet Silverado 1500
2002-2006 Chevrolet Tahoe/GMC Yukon
2002-2006 Chevrolet Suburban/GMC Yukon XL
2002-2007 GMC Sierra 1500
LQ4 - 6.0L (364 CI) - 300-325 hp / 360-370 ft·lb
*Iron Block
Chevrolet Express/GMC Savana
Chevrolet Silverado 2500 Pickup, 3500 Pickup, Crew Cab, and Chassis Cab/GMC Sierra 2500 HD Pickup and Crew Cab, C3, Denali, and 3500 Pickup and Chassis Cab, 1500HD Crew Cab
Chevrolet Suburban/GMC Yukon XL Denali
Hummer H2 SUT
GMC Yukon Denali
LQ9 - 6.0L (364 CI) - 345hp / 380 ft·lb
*Iron Block
2002-2006 Cadillac Escalade
2002-2006 Cadillac Escalade EXT
2003-2006 Cadillac Escalade ESV
2003-2007 Chevrolet Silverado SS
2004-2005 Chevrolet Silverado and GMC Sierra Vortec HO Edition Only 2006-2007 Chevrolet Silverado and GMC Sierra VortecMAX Option
GENERATION IV - Generation IV engines are very similar to Gen III and most parts can be interchanged. The Gen IV was produced with displacement on demand and variable valve timing in mind. Not all have these features, but they are available. Also they have a 58x crank trigger, front cam sensor, and side mounted Knock sensors.
L76 - 360hp /385 ft-lbs. 6.0L (364 Cubic Inches)
2008 Pontiac G8
L98 - 362hp /391 ft-lbs. 6.0L (364 Cubic Inches)
2007-2008 Chevrolet Lumina SS
2007-2008 Chevrolet Caprice SS
L99 - 400hp /395 ft-lbs. 6.0L (364 Cubic Inches)
*Derived from the LS3 and with Displacement on Demand
2010 Chevrolet Camaro
LS2 - 6.0L (364 CI) - 400 hp/400 ft.-lbs.
2006-2007 Cadillac CTS-V
2005-2007 Chevrolet Corvette
2005-2006 Chevrolet SSR
2006-2008 Chevrolet TrailBlazer SS
2004-2007 Holden Special Vehicles (all V8 models)
2005-2006 Pontiac GTO
2008-2010? Saab 9-7X Aero
2005-2006 Vauxhall Monaro VXR
LS3 - 6.2L (376 CI) - 430 hp / 424 ft.-lbs.
April 2008-present Holden Special Vehicles (all V8 models)
2008-present Chevrolet Corvette
2009 Pontiac G8 GXP
2010 Chevrolet Camaro
LS4 - 5.3L (325 CI) - 303 hp / 323 ft.-lbs.
2006-2008 Chevrolet Impala SS
2006-2007 Chevrolet Monte Carlo SS
2005-2008 Pontiac Grand Prix GXP
2008 Buick LaCrosse Super
*Aluminum FWD Block w/ LS6 Heads
LS7 - 7.0L (427 CI) - 505 hp / 470 ft.-lbs.
2006-2008 Chevrolet Corvette Z06
2008 HSV W427
LS9 - 6.2L (376 CI) Supercharged - 638 hp / 604 ft.-lbs.
*Based on the LS3
2009 Chevrolet Corvette ZR1
TRUCK ENGINES - GENERATION IV
LY2- 4.8 2007-present Silverado/Sierra, Express/Savana , Tahoe/Yukon
LMG- 5.3 (Iron block/AFM/FF) 2007-present Silverado
LH6- 5.3 (Alum block/AFM) 2005-present TB/Envoy, 2007-present Silverado
LC9- 5.3 (Iron block/AFM/FF) 2007-present Silverado
LY5- 5.3 (Alum block/AFM/FF) 2007-present Silverado
LH8- 5.3 (Alum block) H3 Alpha, Colorado/Canyon
LY6 - 6.0 (364 CI) - Same as LQ4, but Gen IV.
*Variable Valve Timing
2007-present Chevrolet Silverado HD
2007-present GMC Sierra HD
2007-present Chevrolet Suburban 3/4 ton
2007-present GMC Yukon XL 3/4 ton
L76 - 6.0 (364 CI) - 367hp / 375 ft.-lbs.
*Basically the Gen IV replacement for the LQ9
*Variable Cam Phasing & Active Fuel Management
2007-present Chevrolet Suburban
2007-present Chevrolet Avalanche
2007-present Chevrolet Silverado
2007-present GMC Sierra
2007-present GMC Yukon XL
LFA - 6.0 (364 CI) - 332 hp / 367 ft.-lbs.
*Active Fuel Management
*Late-intake valve timing system
*Higher 10.8:1 compression ratio
2008-present Chevrolet Tahoe Hybrid
2008-present GMC Yukon Hybrid
2009-present Cadillac Escalade Hybrid
2009-present Chevrolet Silverado Hybrid
2009-present GMC Sierra Hybrid
L92 - 6.2L (376 CI) - 380/403 hp and 403/415 ft.-lbs.
2007-08 Cadillac Escalade
2008 Chevrolet Tahoe
2007-08 GMC Sierra Denali
2008 Hummer H2
2007-09 GMC Yukon Denali/Denali XL
L9H- 6.2L (376 CI)
2009 Cadillac Escalade
2009 GMC Sierra Denali
2009 Hummer H2
2009 GMC Yukon Denali/Denali XL
2009 Silverado LTZ, Tahoe LTZ
----------------------------------------------------------------------
Quick summary of the major engines and their compression ratios and GM part #s:
LS1...346c.i. 5.7L 10.19:1 25534322
LS6...346c.i. 5.7L 10.46:1 12578104/12562190
LR4...293c.i. 4.8L 9.47:1
LM4...325c.i 5.3L 9.49:1
LM7...325c.i 5.3L 9.49:1 12562201
L59...325c.i. 5.3L 9.49:1
LQ4...364c.i. 6.0L 9.41:1 12575147/12575148
LQ9...364c.i. 6.0L 10.08:1 12499467
11-10-2009, 01:41 PM
#4
there is no such thing as a fake LSx.
LSX is the GMPP block
All GENIII/IV engines are LSx architecture. doesnt matter if there FWD spec or 4.8 VORTEC.
VORTEC is the name used for truck,van and suv LS motor.
LS1= All aluminum 5.7 LS GENIII. an upgraded,revised 5.7 version also became known as LS6.
LSX is the GMPP block
All GENIII/IV engines are LSx architecture. doesnt matter if there FWD spec or 4.8 VORTEC.
VORTEC is the name used for truck,van and suv LS motor.
LS1= All aluminum 5.7 LS GENIII. an upgraded,revised 5.7 version also became known as LS6.
11-10-2009, 08:38 PM
#6
there is no such thing as a fake LSx.
LSX is the GMPP block
All GENIII/IV engines are LSx architecture. doesnt matter if there FWD spec or 4.8 VORTEC.
VORTEC is the name used for truck,van and suv LS motor.
LS1= All aluminum 5.7 LS GENIII. an upgraded,revised 5.7 version also became known as LS6.
LSX is the GMPP block
All GENIII/IV engines are LSx architecture. doesnt matter if there FWD spec or 4.8 VORTEC.
VORTEC is the name used for truck,van and suv LS motor.
LS1= All aluminum 5.7 LS GENIII. an upgraded,revised 5.7 version also became known as LS6.
11-10-2009, 09:32 PM
#7
The name Vortec should probably be avoided here because it also covers some of the latest releases of the old style, Gen 1 small block. And these engines were also available with EFI, so an EFI Vortec is still a confusing name. To me, a Vortec engine is the old style.
Trending Topics
11-10-2009, 11:15 PM
#9
TECH Regular
There is a pretty decent breakdown on wikipedia under "GM LS Engine" and more details regarding the RPO's for trucks under "GM Vortec Engine"
There are some instances where GM has a reused RPO but it's rather uncommon. LSx has been used to generically refer to a GenIII/IV engine (LS_, LS#) Then it got a little confusing when GM Released the LSX (iron block,taller deck) for big cubes. Folks also use LSx since they may be using a LQ4 block, L92 heads, L76 intake, corvette accessories, and an F-body oil pan.... or some other Homogolation of engine parts.
There are some instances where GM has a reused RPO but it's rather uncommon. LSx has been used to generically refer to a GenIII/IV engine (LS_, LS#) Then it got a little confusing when GM Released the LSX (iron block,taller deck) for big cubes. Folks also use LSx since they may be using a LQ4 block, L92 heads, L76 intake, corvette accessories, and an F-body oil pan.... or some other Homogolation of engine parts.
11-10-2009, 11:42 PM
#10
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And another link to a "quick & basic" reference guide, should be useful for newbs... (Naturally, I'm a little biased toward page 3...) 
11-11-2009, 11:51 AM
#11
www.car-part.com is an online directory of salvage yards and lists availability of parts by distance and price. If you put in 5.3 engine you are going to get about 2,000 listings!
11-11-2009, 12:05 PM
#13
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I really think this should be a sticky because i, myself, was overwhelmed with the confusion of what kind of vehicle i had to look in to find an LS1 for my swap.
I believe this will help alot of people looking for an engine
Ok and i've also updated the original post with the input from you guys. Thanks.
I believe this will help alot of people looking for an engine
Ok and i've also updated the original post with the input from you guys. Thanks.
11-14-2009, 09:20 PM
#14
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I really think this should be a sticky because i, myself, was overwhelmed with the confusion of what kind of vehicle i had to look in to find an LS1 for my swap.
I believe this will help alot of people looking for an engine
Ok and i've also updated the original post with the input from you guys. Thanks.
I believe this will help alot of people looking for an engine
Ok and i've also updated the original post with the input from you guys. Thanks.
We should also make a list of the head variables as well. Such as the 241's vs the 243's. With a list of valve intake size, cc, and such so you can mix and match a block if you find one with an apropriate head from another source.
11-14-2009, 09:31 PM
#15
GM also used the Vortec moniker for the LS-based, Lingenfelter-prepared, sealed spec engines used in the now defunct ASA Series that ran Monte Carlos, Grand Prixs, a couple of Tauruses & a lone Intrepid. Not that any of that matters to your chart
The '98 Vette started the LS era....anything patterned after that engine can still be called and LSx or LS engine plain and simple.
The '98 Vette started the LS era....anything patterned after that engine can still be called and LSx or LS engine plain and simple.
11-14-2009, 10:20 PM
#17
X 3 ^^^ sdbrown, sticky with the most popular head combos and such, the fact that L92 heads dont fit 5.7 Ls1's, and that 4.8 pistons in a 5.3 raise compression, and a whole bunch of info that the senior members, sponsors, and KNOWLEDGEABLE members chime in with.
