I put together a fairly comprehensive list of the production "LS" engines available. I'm lumping all of the GM Gen III and Gen IV car and truck engines under the term "LS". LS is simply the car engine designation for the GEN III and Gen IV GM engines, where the truck engines got an LQ, LM, LY, etc. designation.
I broke them down by displacement, noting whether it was a Gen III or Gen IV engine, iron block or aluminum block, years produced and HP/TQ ranges. I didn't get into the Gen V LT1 engines here. I have gathered this information from several sources over the past few years. In the case that the sources were not in complete agreement, I have listed ranges for HP and TQ.
Gen III and Gen IV engines are both “LS engines”. GM made enough changes to the engine architecture to give the Gen IV engines their own designation, including going from a 24x to a 58x reluctor wheel (crank trigger), moving the cam sensor to the front, adding AFM/DOD and VVT to some, knock sensor relocation, improved ECM/TCM, etc. All "LS" engines got aluminum heads except for the 1999-2000 LQ4's which had iron heads.
Hopefully someone can use this information when deciding on what engine to use in their swap. If anyone catches any mistakes, feel free to note them here.
LQ/LR/LM/LY/LH = truck designation
AFM = Active Fuel Management (same as DOD = Displacement on Demand)
VVT = Variable Valve Timing
Flex Fuel = E85 Compatible
4.8L (293ci) (3.78 bore/3.27 stroke)
LR4 – Iron Block Gen III (1999-2007)
5.3L (325ci) (3.78/3.62)
LM7 – Iron Block Gen III (1999-2007)
5.7L (346ci) (3.89/3.62)
LS1 – Aluminum Block Gen III (1997-2005)
6.0L (364ci) (4.00/3.62)
LQ4 – Iron Block Gen III (1999-2007)
6.2L (376ci) (4.065/3.62)
L92 – Aluminum Block Gen IV (2007-2013) (VVT)(flex fuel 2009+)(AFM 2010+)(truck)
7.0L (427ci) (4.125/4.00)
LS7 – Aluminum Block Gen IV (2006-2015)
I broke them down by displacement, noting whether it was a Gen III or Gen IV engine, iron block or aluminum block, years produced and HP/TQ ranges. I didn't get into the Gen V LT1 engines here. I have gathered this information from several sources over the past few years. In the case that the sources were not in complete agreement, I have listed ranges for HP and TQ.
Gen III and Gen IV engines are both “LS engines”. GM made enough changes to the engine architecture to give the Gen IV engines their own designation, including going from a 24x to a 58x reluctor wheel (crank trigger), moving the cam sensor to the front, adding AFM/DOD and VVT to some, knock sensor relocation, improved ECM/TCM, etc. All "LS" engines got aluminum heads except for the 1999-2000 LQ4's which had iron heads.
Hopefully someone can use this information when deciding on what engine to use in their swap. If anyone catches any mistakes, feel free to note them here.
LS Engine Designations (Gen III & Gen IV)
Glossary
LS = car designationLQ/LR/LM/LY/LH = truck designation
AFM = Active Fuel Management (same as DOD = Displacement on Demand)
VVT = Variable Valve Timing
Flex Fuel = E85 Compatible
4.8L (293ci) (3.78 bore/3.27 stroke)
LR4 – Iron Block Gen III (1999-2007)
- 255hp/285-295tq (1999)
- 270-275hp/285-290tq (2000-2003)
- 285hp/295tq (2005-2007)
- 260-295hp/295-305tq
- 260-302hp/295-305tq
5.3L (325ci) (3.78/3.62)
LM7 – Iron Block Gen III (1999-2007)
- 270hp/315tq (1999)
- 285hp/315tq (2000-2003)
- 295hp/335tq (2004-2007)
- 285hp/320tq (2002-2003)
- 295hp/335tq (2004-2007)
- 290hp/325tq (2003-2004)
- 310hp/355tq (2005-2007)
- 320hp/340tq (SUV)
- 315-320hp/335-340tq (truck)
- 320hp/340tq (SUV)
- 315-320hp/335-340tq (truck)
- 300-315hp/330-338tq
- 320hp/335tq (SUV)
- 315hp/335tq (truck)
- 300hp/320tq
- 303-315hp/323-340tq
5.7L (346ci) (3.89/3.62)
LS1 – Aluminum Block Gen III (1997-2005)
- 305-325hp (1998-2002 Camaro)
- 345hp/350tq (1997 Vette)
- 350hp/365tq (1998-2004 Vette)
- 385hp/385tq (2001)
- 400-405hp/400tq (2002-2005)
6.0L (364ci) (4.00/3.62)
LQ4 – Iron Block Gen III (1999-2007)
- 300hp/360tq (1999-2000) (iron heads)
- 300-325hp/360-370tq (2001-2007)
- 345hp/390tq
- 361hp/385tq
- 322-360hp/373-382tq
- 390-400hp/400tq
- 361hp/385tq (G8)
- 367hp/375tq (truck)
- 362hp/391tq
- 362hp/391tq (manual)
- 348hp/382tq (auto)
- 332hp/367tq
- 332hp/367tq
6.2L (376ci) (4.065/3.62)
L92 – Aluminum Block Gen IV (2007-2013) (VVT)(flex fuel 2009+)(AFM 2010+)(truck)
- 403hp/415-417tq
- 403hp/417tq
- 426-436hp/420-428tq
- 400hp/410tq
- 638hp/604tq
- 556-580hp/551-556tq
7.0L (427ci) (4.125/4.00)
LS7 – Aluminum Block Gen IV (2006-2015)
- 505hp/470tq