LS Engines

The Definitive Guide to LS Engine Specs and LS Engine Upgrades

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This is the ultimate LS engine swap or engine upgrade resource.

Scroll through the tables below to find the LS or LS-based Vortec truck engine that you own or are interested in building. All of the key engine specs and expert engine-upgrade advice and guidance you’ll need are only one click away.

Gen. III LS Engine Upgrade Guides & Specs (1996-2007)

Gen III LS & Vortech Engines
DisplacementEngine CodeLS Engine Upgrade GuideLS Engine Spec GuideReluctorVIN (8th Digit)BlockHeadGen III YearsVehicle
4.8LLR4LR4 Upgrade GuideLR4 Engine Specs24XV IronCathedral1999-06Truck/SUV/Van
5.3LLM4LM4 Upgrade GuideLM4 Engine Specs24XPAlum.Cathedral2003-05SUV
5.3LLM7LM7 Upgrade GuideLM7 Engine Specs24XTIronCathedral1999-07Truck/SUV
5.3LL59L59 Upgrade GuideL59 Engine Specs24XZIronCathedral2002-07Truck/SUV
5.3LL33L33 Upgrade GuideL33 Engine Specs24XBAlum.Cathedral2005-07Truck
5.7LLS1LS1 Upgrade GuideLS1 Engine Specs24XGAlum.Cathedral1997-04F body/C5/GTO
5.7LLS6LS6 Upgrade GuideLS6 Engine Specs24XSAlum.Cathedral2001-05 C5 Z06/CTS-V
6.0LLQ4LQ4 Upgrade GuideLQ4 Engine Specs24XUIronCathedral1999-07Truck
6.0LLQ9LQ9 Upgrade GuideLQ9 Engine Specs24XNIronCathedral2002-07Truck

Gen. IV LS Engine Upgrade Guides & Specs (2005-Present)

Gen IV LS & Vortech Engines
DisplacementEngine CodeLS Engine Upgrade GuideLS Engine Spec GuideReluctorVIN (8th Digit)BlockHeadGen IV YearsVehicle
4.8LL20L20 Upgrade GuideL20 Engine Specs58XAIronCathedral2010-17Truck/Van
4.8LLY2LY2 Upgrade GuideLY2 Engine Specs58XCIronCathedral2007-09Truck
5.3LLY5LY5 Upgrade GuideLY5 Engine Specs58XJIronCathedral2007-09Truck/SUV
5.3LLC9LC9 Upgrade GuideLC9 Engine Specs58X3 or 7Alum.Cathedral2007-14Truck/SUV
5.3LLH6LH6 Upgrade GuideLH6 Engine Specs24X/58XMAlum.Cathedral2005-09SUV
5.3LLH8LH8 Upgrade GuideLH8 Engine Specs58XLAlum.Cathedral2008-09Truck/SUV
5.3LLH9LH9 Upgrade GuideLH9 Engine Specs58XPAlum.Cathedral2010-12Truck
5.3LLMFLMF Upgrade GuideLMF Engine Specs58X4IronCathedral2010-14Vans
5.3LLMGLMG Upgrade GuideLMG Engine Specs58X0IronCathedral2007-14Truck/SUV
5.3LLS4LS4 Upgrade GuideLS4 Engine Specs24X/58XCAlum.Cathedral2005-09FWD car
6.0LLS2 (Car)LS2 (Car) Upgrade GuideLS2 (Car) Engine Specs24X/58XUAlum.Cathedral2005-2007Corvette/GTO/CTS-V
6.0LLS2 (Truck)LS2 (Truck) Upgrade GuideLS2 (Truck) Engine Specs24X/58XHAlum.Cathedral2005-06, 2007-09SSR/TBSS, TBSS/9-7X Aero
6.0LL76 (Car)L76 (Car) Upgrade GuideL76 (Car) Engine Specs58XYAlum.Rectangle2008-10Pontiac G8
6.0LL76 (Truck)L76 (Truck) Upgrade GuideL76 (Truck) Engine Specs58XYAlum.Rectangle2007-09Truck/SUV
6.0LL77L77 Upgrade GuideL77 Engine Specs58X2Alum.Rectangle2011-17Caprice PPV, Holden VE2/VF
6.0LL96L96 Upgrade GuideL96 Engine Specs58XGIronRectangle2010-17Truck/SUV/Van
6.0LL98L98 Upgrade GuideL98 Engine Specs58XN/AAlum.Rectangle2007-08Holden
6.0LLC8LC8 Upgrade GuideLC8 Engine Specs58XBIronRectangle2011-16CNG fuel
6.0LLFALFA Upgrade GuideLFA Engine Specs58X5Alum.Cathedral2008-09Hybrid Truck/SUV
6.0LLY6LY6 Upgrade GuideLY6 Engine Specs58XK/NIronRectangle2007-14Truck/SUV/Van
6.0LLZ1LZ1 Upgrade GuideLZ1 Engine Specs58XJAlum.Cathedral2010-13Hybrid/Truck/SUV
6.2LL92L92 Upgrade GuideL92 Engine Specs58X8Alum.Rectangle2007-08SUV
6.2LL94L94 Upgrade GuideL94 Engine Specs58XFAlum.Rectangle2010-14SUV
6.2LL99L99 Upgrade GuideL99 Engine Specs58XJAlum.Rectangle2010-15Camaro (auto)
6.2LL9HL9H Upgrade GuideL9H Engine Specs58X2Alum.Rectangle2009-14Truck/SUV
6.2LLS3LS3 Upgrade GuideLS3 Engine Specs58XWAlum.Rectangle2008-17Performance Cars, C6 Grand Sport
6.2LLSALSA Upgrade GuideLSA Engine Specs58XPAlum.Rectangle2008-15CTS-V, 5th Gen ZL-1
6.2LLS9LS9 Upgrade GuideLS9 Engine Specs58XTAlum.Rectangle2009-13Corvette ZR-1
7.0LLS7LS7 Upgrade GuideLS7 Engine Specs58XEAlum.Square2006-15C6 Z06, Camaro Z28
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80 Comments

  1. Bradford L White says:

    How do you code the LS3/480 I purchased from The GM Performance Division ?

    • OnAllCylinders says:

      Bradford, the LS3 480 horsepower is really just a LS3 with the 219/228 degree duration Hot Cam instsalled. All other specs are identical to the LS3.

  2. Jeffery Fietz says:

    Have a 89 Chevrolet iroc Camaro with a 5.7 liter in it what would be the best swap,have a 700r4 automatic transmission

    • OnAllCylinders says:

      The 1989 Iroc is destined to become a classic. With LS swaps, it’s generally easier to find newer engines with lesser miles. Gen. 5 engines require considerably more effort to install though, so we would recommend a Gen. 4 LS3. The NAL-1941986 variant with the Hotcam is a nice upgrade that works well with the stock converter. It’s also easy to use the installer kit NAL-19354330 that has theh harness, ECU, and electronic gas pedal required to actuate the throttle body. Motor and transmission mounts are common and should make for a relatively swap and add another 240 horsepower to the IROC and run like a dream.

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  4. rick frazier says:

    I have a 81 c/20 chevy truck 350c 400 turbo
    I am looking for a replacement 6 liter.

    • Charles key says:

      I have a unmolested 6.0 Ls moter in a police suburban 114,211 miles 421 hp 397 pounds of tork that I will trade for a generation 1 LS motor 5.3 with the transmission this 6.0 liter engine and transmission I have did nothing but transport prisoners back and forth by the US Marshals from Canada to California it ain’t never pulled nothing in his life but it’s a straight monster

      • Stephen Sims says:

        I’m guessing you have already found what you need, but in case you haven’t, email me. I have a 2000 5.3 and 4L60 2wd trans out of a 1500 Silverado with 83k miles I would be interested.

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  6. Kevin bowman says:

    I have a 94 Chevy cab in a half Dilley with a 454 and want to change to a LS motor what is the best one to buy.thanx K B

    • OnAllCylinders says:

      There are 46 Gen. 3 and 4 options. Ideally it would be best to get a larger 6.0 or 6.2L engine to get the extra torque out of it. That being said, even a 5.3L can be surprisingly strong. Some of the 6.0 and 6.2’s in the cars used a short runner intake manifold. The truck versions were very similar except had tall intake manifolds with long runners to produce more low end torque. They also had cams that were designed for more low end, but we’d recommend the installation of a SUM-8718 torque cam while the engine out to make whatever you have an absolute monster. Take a look at the following guide. It breaks out all the engine codes by displacement and where they were used. From there, each link gets into engine specifics. A Gen. 3 engine is almost always a little more simple because you don’t have VVT or AFM. Gen 4’s were all over the map with these features, but VVT and AFM delete kits are common and take all the headache out of anything you choose. Keep in mind, no matter what you get…you will want to get the matching ECU, wiring harness, and throttle pedal if equipped with Drive-By-Wire. The Customer Help section has a variety of spec articles and upgrade articles that cover everything you need to determine the direction you are going. Just enter engine codes etc. into the search bar and these helpful articles will popl up.

  7. Kevin bowman says:

    454 swap to LS motor in a 1994 Chevy dulley c3500 cab in a half long bed

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  13. Pingback: LS Engines 101: An Introductory Overview of the Gen III/IV LS Engine Family - OnAllCylinders

  14. Pingback: LS Engine Spotter's Guide, Part 1: Matching the Vehicle to the Engine - OnAllCylinders

  15. Pingback: How to Identify an LS Engine - OnAllCylinders

  16. Pingback: How to Delete or Disable Active Fuel Management (AFM) on GM Engines

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  32. Anyway someone can help me out? I have an 05 Silverado ext cab 2wheel drive withe the 5.3 vortec. I believe I just spun a rod bearing this past week and I am looking into replacing the motor. What I am confused about is what motor I can put back into it. I’d like to stay with the 5.3 it’s an lm7 vin “t”. Can someone tell me which motor I’d be able to get and be able to drop right in without having to change anything else. For instance does it have to be the same vin “t” motor to match up. As far as my understanding I can put any 5.3 in it out of a Silverado suburban Tahoe or Sierra is that correct? Any advice would be greatly appreciated. Thanks

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  47. Replacing a LB9 with a LH8 in a 1988 Camaro problems?

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  51. CAN I USE AN 07 INTAKE WITH STEEL FUEL RAIL WITH A L59 BLOCK?

    • OnAllCylinders says:

      As long as the intake manifold you are using is designed for cathedral port heads, you will be fine. L59’s were actually used from 2002-2007 to begin with.

  52. Tim hotchkiss says:

    Why in this guide it shows 5.3 2005 and newer with a 8 th dig C as being a ls4 transverse fwd vehicle……many of the trucks and SUV 2010 and up 8 dig C is a 5.3 rwd units ….something does not smell right …

  53. Charles Montford says:

    Have 2010 5.3 flexfuel blown motor, found 2006 5.3 flexfuel if I use intake everything be okay

  54. william e arrowsmith says:

    ARE lm4, l33 ,lh6, lc9, lh8, lh9, bare blocks interchangeable

    • OnAllCylinders says:

      You are in luck. When it comes to blocks, they are basically all interchangeable as long as you use the bore size that fits your rotating assembly. That being said there are a couple differences that are important to note. The Gen. 4 engines moved the knock sensors from the valley to the side of the block. They also moved the cam sensor from behind the intake to the front timing cover. There are adapter harnesses to fix either situation.

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  69. Rufus Jr. McLean says:

    I just sold my 97 Tahoe so as to use money to buy a 91 Pathfinder 4×4 and it has the 3.0 or 3.1 V6 . I’m wanting to remove engine and whatever else I have to, so I can install a V8 drivetrain. Should I use a Toyota Tacoma V8 or can I use some good ole American muscle V8 like LM7? And what should I use as far as transmission goes for the LM7/5.3-5.7? Would Pathfinders transmission ,rear differential and driveshaft hook up to the LM7?

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  71. Jeff Guimont says:

    I have a 99 silverado 2500 2wd with 6.0 w/ 289K. Wanting to rebuild another 6.0 but use 862 heads to bump up the compression, but, if at all possible not be relegated to using 92 octane. I understand that even with the higher static compression that the cylinder pressure can be managed by cam timing and bleeding off some of the pressure. Bottom line, does anyone have any recommendations for the kind of cam to use? I will be doing some porting work in the heads to increase flow.

  72. I have a 1981 Corvette. What is a good engine and transmission swap, that requires little to no modification

  73. Can you update this page, so it loads full screen. You can only see 30% of the page at a time. So you have to keep scrolling back and forth to look at specs with Chrome/Edge browser

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