Lq4 vs lq9 horsepower 58x crank wheel. My question is, is it worth the extra cost to get an LQ9 short block vs an LQ4? My understanding is that the only difference is that the 4 has dished pistons vs the 9 having flat top and thus slightly higher Mar 24, 2009 · Yukon/XL Engine Specifications Type: 6. The LQ4 piston is dished where as the LQ9 is a flat-top increasing compression to 10:1, and HP to 345 factory. In late 2006 the LQ9 Vortec MAX was replaced with the L76 engine code which had a slightly higher horsepower output. wall pushrods. The LY6 used Variable Valve Timing (VVT). 0L LQ4 and LQ9 are iron blocks, only difference between them is compression ration. This higher compression ratio enables the LQ9 to produce more horsepower and torque than its LQ4 counterpart. lbs of TQ. And the only difference between lq4 and lq9 is the the lq4 has dished pistons so a slightly lower compression ratio. 3L V-8. LQ9 Vs. 0L, iron LS1s in regards to architecture. Advertising supports this site News. 5:1 VS. , what does it take to get a 6. May 31, 2018 · The LQ9 was basically an LQ4 with flat-top pistons and was rated at 345 hp and (oddly enough) an LQ4-matching 380 lb-ft of torque. 610 w\ full cam kit, Edelbrock Vic Jr manifold with custom elbow, 48lb injectors, Custom CAI with raim air scoop,Kooks 1 7/8 longtubes catless with custom H-pipe and 18inch, sweet thunder muffs in 04 location. Some '99-00 LQ4's had the iron heads instead of the 317 aluminums. LS9 vs. 0:1, which increases horsepower and torque but requires higher-octane fuel for optimal performance. As I said, I don't know squat about these motors, but I'm told that the main difference between an LQ9 and an LQ4 is the pistons. The aftermarket for interchangeable parts is strong. The LQ4 has better fuel efficiency and torque than the LQ9, which makes it an ideal choice for smaller cars. 0L used the 12561721 The 02-up LQ9 6. Richard Holdener Dec 1, 2009 · lq4/lq9 As the LS6 was being developed inside GM, engineers were so enamored with its performance that they decided to spread some love to the truck line as well. 6), though the use of E85 certainly tipped the scale in our favor. 2-liter engine. 4:1 Valve Configuration: Overhead Valves Assembly Site: Romulus, MI Valve Lifters: Hydraulic Roller May 3, 2016 · The core for our build was a 6. LSA Dyno test of horsepower and torque of different factory LS camshafts in a 5. of torque at 5,900 rpm. ) Feb 2, 2018 · [Looking to upgrade your LQ9 engine? Check out LQ4/LQ9 Engine Upgrade Guide: Expert Advice for LQ4 & LQ9 Mods to Maximize Performance. 6:1). Iron Maiden, Part 2: pulling big power from the stock LS parts bin. . Jun 9, 2023 · A single turbo LQ4 build is actually pretty easy on the wallet though, just make sure you have the fuel system and other bits to support it. ] You can explore all of our LS engine spec guides and LS tech resources here. LS7 vs. 0L to reach the 500-hp mark? The answer, as always with LS motors, is a cam swap. Vortec 6. 9. In truth, this 6. LS1 vs. As Ben said, the difference in the motors is the dished pistons in the LQ4. May 3, 2009 · The LQ9 is tuned for more performance with the bump in compression. 4:1, while the LQ9 boasts a higher compression ratio of 10. 0L Vortec had LQ4 and LY6 engine code, while the Vortec MAX used the LQ9 engine code. LQ4 has dished and LQ9 has flat tops, heads are the same. The 6. Don't mind spraying, but would like to run at least 7. They can all be good base for a swap depending on what your willing to change or how much stock parts you want to keep. 4 to 1 compression. LQ9: Key Differences and Similarities. Rectangular port heads. It’s possible to push 1,000 HP from a 6. Mar 27, 2024 · Dialed in with a peak of 10. Feb 15, 2017 · LQ4 is low compression (9. 0L V8 siblings - the LQ4 and LQ9. The LQ4 features a 6. 4 and LQ9 is 9. 3L The 01-up LQ4 6. 24x crank wheel. The LY6 engine has a higher compression ratio of 9:6:1, while the LQ9 has a slightly lower CR of 10:1. The engine is well built to handle greater horsepower with modifications such as turbos, superchargers, nitrous oxide, and such. Nov 28, 2019 · The 6. 6 hp per pound (525 / 14. I paid 350 for the pair of heads. Rated by the factory in the low 300-hp range (depending on application and year), the LQ4 featured reduced static compression (compared to the LQ9) thanks to a combination of dished pistons and sizable 71cc chambers on the 317 cylinder heads. 41:1 Compression LQ9 has roughly 20more hp due to compression? Aug 12, 2006 · The LQ4 is a pressed pin piston setup. A flat top in the LQ9 10:1. However, you will need to upgrade the internals to handle that kind of power. This equates to 39. LQ9 Specifications The LQ4 and the LQ9 are very similar. peace PAuly Sep 25, 2012 · The LQ4 comes with a dished piston 9. Along with the LY2, LY5, and LMG, it was one of the first 4th generation, LS truck engines. 0 swap and I see the obvious differences between the LQ4 and LQ9. 0L pumped out an easy 929 hp at 6,500 rpm and 796 lb. The LQ9 is better if you want more power straight from the factory. from what everyone has said on other forums on here, the lq4 has different pistons, and since it runs at a lower comp. 1:1 Compression LQ4 = 9. Several frequently asked questions about the LQ9 engine, including its specs and features: LQ9 vs. LQ9 Applications: 2002–2006 Cadillac Escalade 2002–2006 Cadillac Escalade EXT Jun 1, 2003 · Same as on the LQ4. III LS Engine Upgrade Guides & Specs (1996-2007) Usually, the LQ4 lasts 225,000–250,000 kilometers. 0) in the Escalades LQ9 = 10. When shopping, it's important to do your homework. The down side is the weight. It produces 345–350 hp and 370–380 lb-ft of torque. Jun 6, 2023 · The standard 6. 10 DIY JUNKYARD COMBOS, FULL DYNO RESULTS, REC & CATH PORT-WHAT WORKS! CHECK OUT THIS VIDEO WHERE I RAN NO LESS THAN 10 DIFFERENT PERFORMANCE COMBINATIONS TO Nov 24, 2011 · Trying to pick an engine for my fox body build. 0Ls, with the base workhorse LQ4. 00-inch bore blocks that were built between 1999-2007. The LQ4 is a four-cylinder engine, while the LQ9 is a nine-cylinder engine. His flat-top pistons bump up the compression ratio, making him a horsepower and torque monster. The 4 is very abundant thus the smaller price tag, and the horsepower difference due to compression and (cam?) other factors. The LQ9 is a limited production engine and VERY desirable as it is the HO 6. To summarize, a stock 6. The stated HP numbers from GM are sort of a game anyway. k. 0L also used the 12561721 Factory Camshaft specs are: 12560967 191/190 duration at . of torque, providing more power straight out of the box. The LQ4 came out first and lasted from 1999–2007, while the LQ9 came out second and was produced from 2002–2007. The compression ratio is a notable difference between the LY6 and LQ9 engines. The engine gets mileage between 11-13 mpg, which is very poor. 0’s had just two engine codes, the LQ4 and LQ9. Before we get into the power adders…there’s a couple things to Apr 2, 2025 · That depends on your needs. L33 vs. … LQ4/LQ9 Power Adders. The LQ4 engine, often referred to as the Vortec 6000, is the older brother in this family. They rate different HP on the Denali vs the trucks, but its the same physical motor. Jul 7, 2014 · So I'm shopping around looking to do a 6. The difference in HP is like 25 or 30 the LQ9 being the one with more HP because of the higher compression. 0 Vortec. Sep 11, 2024 · 500 Horsepower 6. -ft. At 216 lbs. Performance Feb 1, 2018 · [Looking to upgrade your LQ4 engine? Check out LQ4/LQ9 Engine Upgrade Guide: Expert Advice for LQ4 & LQ9 Mods to Maximize Performance. I'm planning to do an engine swap on my C5 Corvette and I think I've settled on a gen 3 6. Also the LQ9 has flat topped pistion and the LQ4 Has dished pistions. Since the LQ9 is a high-output 6. Nov 14, 2003 · The LQ9 has hypereutectic flat top pistons while the LQ4 has a cast dished piston. Or, look for a 2007 L76, 6. 0 for the block. Jan 23, 2017 · Our build started out life as most 6. Except for the L33, it had around 10-15 more HP. 0 LS, but a great budget build will easily get you 500-600 HP. What we had our eye on was a Gen IV LY6, and the reasons for this Oct 3, 2019 · Scroll through the tables below to find the LS or LS-based Vortec truck engine that you own or are interested in building. 466 lift on a 114 Lobe center Chevy LQ4 Engine Specs; Chevy LQ9 Engine Specs ; Upgrading the LQ4 and LQ9 Engines; Benefits. Compression Ratio. It replaced the LQ4 and LQ9 as the Vortec 6000. I found one of each, the LY6 has L92 heads I understand. With respect to the standard Vortec 6000, the LQ9 MAX version produced 20-45hp and 10-20tq more than the standard LQ4 engine Jul 28, 2013 · LQ9 has higher compression (flat top pistons vs dished), and floating wrist pins/stronger rods. 5:1). Compression on a LQ4 is around 9. , the block is about 100 lbs. LY6 is low compression (9. All of the key engine specs and expert engine-upgrade advice and guidance you’ll need are only one click away. By bolting LS6-style heads to a Jun 9, 2023 · The LQ9, however, still holds its own with a more aggressive camshaft profile and cathedral-port cylinder heads that provide a balance of low-end torque and high-rpm horsepower. LQ9 Engines Vehicles Jan 13, 2021 · Factory LS Camshaft Comparison: LM7 vs. The LQ9 uses flat-top pistons, which offer higher compression than the dished pistons in the LQ4. 0l lq4 with ss cam package - stock exhaust manifolds vs. LQ4 build: The LQ4 engine, referred to as Vortec 6000 by General Motors, is a small block engine featuring 300 to 325 horsepower and 360-370 foot-pounds of torque based on the type of cylinder heads used. LY6: An Overview. LQ4 vs. Jul 24, 2008 · The LQ9 Has a 10 to 1 compression and the LQ4 has a 9. Many factors go into deciding which engine you should use in your car, but the most important factor is what type of car you have. Look at how they rate the LQ4 on the other platforms. Cathedral port heads. In short, the LQ9 is a high-output version of the LQ4. Same physical motor, one has a differnt air intake - instant 20 HP ratings. Typically, although the LQ9 and LQ4 engines had the capacity to accommodate a power boost, the pistons place the LQ9 at an advantage over the LQ4 at their base levels. I am using 243 64cc heads from a 01 Z06 vette in place of the 317 and the LS6 intake. The LQ9 and LQ4 boost can be triggered to deliver more horsepower and torque, as we improved fuel economy with a dynamometer (a. There are some 035 castings around, but I've never seen one come from the factory on a production LQ9 truck or escalade. 4:1). 0 will make about 300-340 HP. The LQ4 PCM tune is severley detuned when compared to the LQ9 tune. 367 HP and 375 ft. 0-Liter LS Engine. They are both larger versions of the LS motor meant to be a good balance between enormous blocks and new small blocks in truck applications. I'm lookin for drop in power because I won't have the funds to do a 408 stroker build for at least a couple years. Same thing they did with the Z28 and Camaro SS. 0L engine produced in limited quantities, it is highly sought after and comes with a premium price tag. 0L instead of an LQ4 Oct 7, 2014 · LQ9s are built only in Romulus, Michigan. 0's NA. 0L LY6. The earlier LQ4's had a press fit wrist pin. The LQ4 and LQ9 have very strong blocks. Given that the stock LQ4 made right at 400 hp and 438 lb. The weaker LQ4 rodsa nd bolts are still good beyond 450 hp. Horsepower and Torque: Stock LQ9 engines deliver between 345 and 380 horsepower and up to 380 lb. With 345 horsepower and a meaty 380 lb-ft of torque, it delivered approximately 20 more horses than the standard LQ4 engine, thanks primarily to that higher compression ratio. 7 = 35. 0-liter capacity, while the LQ9 boasts a slightly larger 6. (Summit Racing’s Brian Nutter and Paul Spurlock contributed to this article. When you’re sifting through the specs of these two GM powerhouses, you’ll notice that they both pack a punch, yet they cater to different tastes and applications. From what I've read the L92 heads should be good stock, maybe Differences. The LQ4/LQ9 are essentially 6. I am looking to do a twin turbo ls series motor so I am looking into a lq4 because its the exact same motor as the lq9 but has dished pistons and a half point less compression wise. Ultimately, the choice between the LY6 and LQ9 engines will depend on the specific requirements and priorities of the driver or vehicle owner. But basically, they are all pretty similiar and I doubt you would be able to identify driving them back to back. 0L combo also benefitted from additional head flow, as we started this build up with an LY6 6. But Wait, There's More! The Nitty-Gritty Details (for the Curious Gearheads) Horsepower: LQ4 - 295-300 hp, LQ9 - 345-350 hp (Fred wins the Nov 27, 2017 · We Make 457 HP With a Budget 6. One primary distinction is displacement. Factory camshaft part numbers The 99-00 LQ4 6. Latest News Videos Desert Racing Press Releases Press Releases (legacy) Rally Raid Short Course Racing Product Reviews Featured Vehicles Showroom Shop Tours Story Time The traditional five-bolt pentagonal cylinder head pattern was replaced with a square four-bolt design (much like the 1964–1990 Oldsmobile V8), and the pistons are of the flat-topped variety (in the LS1, LS2, LS3, LS6, LS7, LQ9, and L33), while all other variants, including the new LS9 and LQ4 truck engine, received a dished version of the GM Aug 21, 2009 · The only difference between the LQ9 and LQ4 is the pistons. Many people use them with boost or nitrous. Sep 29, 2008 · Dart 225 heads fully worked by PMFL, FTI StreetSweeper cam 236/240 . a Dyno). Let’s examine how these engines differ. 0 LQ9 is also known as VortecMax. (You may need to lower the compression to run with boost. It's an iron block, 364 cubic inches. Like I mentioned in another thread my goal is mid 6's 1/8 mile. The heads are the 317 for both motors. With upgraded internals, the block can handle over 1,000 hp. 0L engine Jan 24, 2025 · Compression Ratio: The LQ9 boasts a higher compression ratio of 10. In terms of the LQ4 engine, its piston is dished, while the LQ9 engine has a flat top piston. LQ9 6. A plug-and-play dyno Nov 10, 2021 · The LQ4 and LQ9 are part of General Motors’ 4. But, the LQ4 is better if you want a more affordable base engine for a build. Flat-tops in the 9, dishes in the 4. The LQ4 makes 300-330 horsepower and 360-370 Apr 13, 2025 · These numbers tell an important story: the LQ9 was designed for trucks that needed serious power without sacrificing reliability. You could still run a turbo on a LQ9 but you wouldn't be able to run as much boost as the LQ4 due to the overall compression ratio or dynamic CR. Apr 3, 2025 · The compression ratio is another crucial difference between the LQ4 and LQ9. 6. The LQ9 also has a higher compression ratio than its counterpart; thus, more power. It was available in GM pickups until 2010. 0 motor. May 9, 2009 · The 5. GM used the LQ9 in premium large SUVs and pickup trucks from 2002 to 2007, when other GM 6. Feb 13, 2018 · There are a few other parts needed for a LQ4/LQ9 cam swap such as an LS2 timing chain, LS7 spec lifters, LS2 timing chain damper and adapter, and . Jul 28, 2024 · The LQ9 featured higher performance components to make 345 horsepower and 380 lb-ft of torque. 0L and comes with a premium price. 080 in. LQ9 with 10:1 compression, would be sweet driver. There are two 6. They share the same valley cover design, knock sensor locations, cam position sensors and locations, crank reluctor tooth counts, and timing covers. If you want to go all mortor get the LQ9 if your going to go forced induction go with the LQ4. LQ9, what is the difference? These two 3rd Gen LS engines share similarities like a cast-iron build and displacement value. The LQ4 has a lower compression ratio of 9. This extra displacement in the LQ9 translates to more power Jun 11, 2009 · LQ4 (6. The LQ4 can be modified to achieve similar or even greater performance than the LQ9, often at a lower overall cost, especially if you’re planning significant upgrades anyway. heavier than the aluminum LS1 block. The LY6 was introduced in 2007. They had roughly 285-295 HP and 325-335 ft lbs of TQ. LQ9 is high compression (10. 050 0. The LQ4 vs LQ9 engines may seem similar at first glance, but there are crucial differences that set them apart. Changing pistons and/or cylinder heads will allow you to change the compression ratio. 0L iron LQ4 engine out of a 2004 Silverado truck. This design difference contributes to the LQ9’s slight increase in horsepower and torque. They can handle over 1,000 hp. ) Chevy LQ9 Engine Specs LQ9 Performance Specifications Apr 28, 2025 · Differences Between the LQ4 vs LQ9. 0-liter LQ4, commonly known as the Vortec 6000, was a version of the LS1 but used cast iron for its engine block instead of cast aluminum. LS2 vs. LQ9 vs. 457/0. The compression doesn't make a huge difference, +20hp/+10tq between the two, and I think some of that is in the tune. Found in 2007 Suburban, Avalanche, Silvarado, Sierra, or Yukon XL. LQ4 Dyno. ) Chevy LQ4 Engine Specs Sep 14, 2010 · The biggest difference between the lq4/lq9 and the l92 is the intake a heads. Both these engines are strong and durable. He may guzzle gas like a frat boy at a keg party, but he'll leave your tires singing and your ego soaring. I should only have around 625 total in the heads vs the 900 for the L92. Ready to drop a heavyweight GM powerplant into your project? You're Apr 20, 2024 · The first generation of 6. These iron block monsters. 0L iron-block engines out there, the LQ9 (345 hp Jun 27, 2006 · difference is compression ratio, the lq4 is a lower compression version of the lq9. This helped it make more Torque and Horsepower than the previous 6. ratio could handle more boost. 6 psi of boost, the turbocharged 6. Purpose-built as a truck engine, LQ4 horsepower Jan 19, 2025 · The LQ4 has a dished piston, while the LQ9 has a flat-top piston that boosts compression to 10:1 and horsepower to 345 from the factory. 610 . Thats the main difference. Aug 1, 2009 · From what I have read, the lq4, lq9 and ls1 are basically all the same type of block right? other then ones aluminum and the other two are iron. The downside to this May 12, 2025 · You're likely eyeing the popular 6. In general, the LQ4 and LQ9 will see boost or nitrous before serious head work. 0) in our Denalis LQ9 (6. Mar 22, 2022 · The LQ4 and LQ9 are two different types of piston engines. Aug 11, 2012 · The LQ4/LQ9 are much more closely related to the LS1 than the LS2 (and later) engines. however the lq9 comes with more horsepower from the factory. However, the robust engine horsepower and torque make up for that. 0L engines. 3 came in 4 versions, the LM7, LM4, L33 and L59. 0:1. Block Design The LQ4 and LQ9 engines differ mainly in their pistons and camshaft designs. The LQ9 is a high performance version of the LQ4, with an extra 15-45 horsepower and 10-20 lb-ft of torque. Gen. The LQ4's were rated at 300hp-325 hp with 360-370 lb/ft torque while the VHO, SS, Escalade LQ9 is 345 hp and 380 lb/ft torque. Only real difference is pistons LQ4 had dished and LQ9 had flat tops (yes rods were different on early LQ4 and 99-00 had iron heads) Only way to tell is look at pistons or vin of donor save for 99-00 with iron heads as its an LQ4. 0L V8 LQ4 Displacement: 5967 cc Compression Ratio: 9. 0L used the 12560967 - this is also used in the 5. Not much of a change at all. Introduced in 1999, it was the go-to power plant for trucks Feb 12, 2025 · LQ4 Engine vs. The LQ9 benefits from increased compression over the LQ4 motors (10:1 vs 9. using nitrous, a blower, or a turbo. 7 hp per pound, or even better than the formula suggested level of 35. LQ9 has flat-top pistons, while LQ4 has dished pistons. LQ4 – Are They the Same? The only difference between the LQ9 and the LQ4 engines is the piston. large primary, long tube headers Aug 26, 2004 · Casting # 317 comes on the LQ9 trucks and the LQ4 trucks. qffk tnxllcm uedcx khhcih ldda plf suwwe sztrzewt imdd blenyc