What is ATK Engines Chevy LQ4 6.0L 460 HP Long Block Crate Engine?
The ATK Engines Chevy LQ4 6.0L 460 HP Long Block Crate Engine is one of the most powerful engines in its class. This engine is a perfect match for those looking to upgrade their current engine or build a brand new high-performance motor.
The LQ4 6.0L engine features an iron block with a compression ratio of 9.6:1 and a bore/stroke ratio of 4.00/3.62 inches. The engine is also equipped with a hydraulic roller camshaft, which provides excellent performance and reliability, especially at high rpm levels.
One of the standout features of the LQ4 engine is its incredible power output. This engine can produce up to 460 horsepower and 465 lb-ft of torque. This power is achieved through a combination of high-quality components, including a forged crankshaft, high-performance pistons, and hardened pushrods.
Additionally, the LQ4 engine has been designed to be compatible with a wide range of vehicles and applications, including hot-rods, street rods, and custom builds. The long block crate engine is easy to install and comes with everything needed for a hassle-free installation.
In conclusion, the ATK Engines Chevy LQ4 6.0L 460 HP Long Block Crate Engine is a powerful and reliable option for those seeking to upgrade their current engine or build a new high-performance motor. With its exceptional power output and compatibility with various vehicles and applications, this engine is a popular choice among car enthusiasts and custom builders.
Frequently Asked Questions about atk engines chevy lq4 6.0l 460 hp long block crate engine
LQ4 Performance Specifications
| Engine Ratings |
|---|
| Compression Ratio | 9.4:1 |
| Horsepower Rating | 300-330 hp |
| Torque Rating | 360-370 ft./lbs. |
Feb 1, 2018
The Vortec 6.0L V8 (LQ4) uses advanced technologies including aluminum cylinder heads and a thermoplastic intake manifold. Its deep-skirt engine block allows cross-bolting of the bearing caps, limiting crank flex, stiffening the engine's structure and reducing overall vibration.
The ONLY difference between an LQ4 and LQ9 is the piston!
The LQ4 piston is dished where as the LQ9 is a flat-top increasing compression to 10:1, and HP to 345 factory. The LQ9 is a limited production engine and VERY desirable as it is the HO 6.0L and comes with a premium price.
The LQ4 is found in GMC Yukons and Sierras, Hummer H2s, and Chevy Suburbans, Silverados and Expresses. The LQ9 is the high-output version of the LQ4, originally designed for Cadillac Escalade models. It has flat-top pistons to increase compression ratio to 10:1. It was also used in the Silverado SS and Denali models.
The 6.0-liter engine, known as the Vortec 6000 or LQ4, found in many GM vehicles from the early 2000s is known for being powerful, durable, and great for a heavy duty vehicle.
If you're getting forged pistons, it's best to also get forged connecting rods with 7/16 rod bolts. The LQ4 and LQ9 cranks were cast but strong. They've been known to handle over 1000 whp.
If it's a Gen 3 with an iron block and a truck intake manifold and has 6.0 stamped on the block, it's an LQ4 or LQ9 6.0L engine. If it's a Gen 3 aluminum block engine with a truck manifold, it's a 5.3L LM4 or L33 engine.
The LQ4 and LQ9 have very strong blocks. They can handle over 1,000 hp. using nitrous, a blower, or a turbo. However, you will need to upgrade the internals to handle that kind of power.
The LQ4 and LQ9 have very strong blocks. They can handle over 1,000 hp. using nitrous, a blower, or a turbo. However, you will need to upgrade the internals to handle that kind of power.
The factory injectors are only rated at 25 lbs. and won't support much more than 380 hp. Plan on upgrading to larger fuel injectors to meet the fuel demands of increased power. Custom tuning will be required to properly adjust the fuel and ignition timing.
A stock LQ4 and LQ9 tune are nearly identical. In fact, the LQ9 uses LESS spark advance in the Low Octane table - due to its higher compression ratio. The modest difference in rated power output is a function of the difference in compression ratio, and refinements to the LQ9's cylinder heads.
It's not a gen 3 engine like some of these backdated. It this one gen 3 wanted easy ways to spy to Gen 3 is it's got the knock sensors in the valley. As opposed the Gen 4 is where these knock sensors.
LQ4 6.0L LS Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More. The LQ4 is a 6.0L LS Gen. 3 small block engine used in GM trucks from 1999-2007.
Best turbo for 6.0 LS:
- The go-to single turbo for a 6.0 Vortec turbo build is the 7875 Billet Turbo 1.25 A/R.
- For 6.0 LS twin turbo applications, a pair of mirrored 6762s in normal and reverse rotation, or twin 6673 turbos are the best options.
Flow Rate Definition, Calculating Horsepower Range
| Injector Flow Rate | Naturally Aspirated Engine | Engine w/ Power Adder |
|---|
| 30 lbs./hr. | 350-450 hp | 300-375 hp |
| 36 lbs./hr. | 425-540 hp | 350-450 hp |
| 42 lbs./hr. | 500-625 hp | 410-525 hp |
| 46 lbs./hr. | 540-690 hp | 450-575 hp |
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. To summarize, a stock 6.0 will make about 300-340 HP. It's possible to push 1,000 HP from a 6.0 LS, but a great budget build will easily get you 500-600 HP.
