LS Chevy 5.3L 510-560HP Complete Crate Engine PRO-BUILT LQ LS2 LS6 Ls3 LSX Dart.

LS Chevy 5.3L Complete Crate Engine | 510-560HP Pro-Built

If you want serious naturally aspirated power in a complete, ready-to-install package, this is it. This LS Chevy 5.3L crate engine is professionally built to produce between 510 and 560 horsepower. It is not a stock used engine, and it is not a mild street build. Instead, it is a fully assembled high-output LS V8 built on proven platform combinations including LQ, LS2, LS6, LS3, LSX, and Dart.

At 53LSEngine.com, we carry pro-built complete crate engines for buyers who want documented high output without assembling the engine themselves. Because every build ships with a full specification sheet, you know exactly what is inside before it arrives.

What Makes This a Pro-Built Complete Crate Engine

A pro-built complete crate engine is fully assembled by experienced LS engine builders to a specific output target. The block, cylinder heads, camshaft, rotating assembly, and induction system are all matched to work together. As a result, you are not buying a core and hoping the parts combination works. You are buying a finished engine with a known specification.

The 510 to 560 horsepower range reflects what the current available build combinations produce. However, actual output depends on the specific block, head, camshaft, and induction package in the current unit. Contact us to confirm the exact figure before ordering.

Who This Engine Is For

This build suits buyers who need maximum naturally aspirated LS output in a complete package.

Serious swap builders who want a known high-output specification from day one. If your build targets 500-plus horsepower naturally aspirated, this gets you there in one purchase instead of multiple rounds of parts and machine work.

Restomod and custom shops that need a documented high-output engine to drop into a client build with a confident output claim.

Track and performance owners who want a complete engine ready to install rather than managing an engine build alongside the rest of the project.

Buyers stepping up from a Stage 3 build who need more displacement, a more aggressive specification, or a specific block platform.

Platform and Block Options

This listing covers a range of proven LS platform combinations. Contact us to confirm which one is in the current available unit and which alternatives you can order.

LQ Platform

The LQ family includes the LQ4 and LQ9. These are Gen 3 iron block 6.0L LS engines from the full-size truck and van segment. Because the iron block gives excellent stability and strength under sustained high output, the LQ is a popular foundation where durability is the priority.

LS2

The LS2 is a Gen 4 aluminum block 6.0L engine. It powered the 2005 through 2007 Corvette, the 2006 Pontiac GTO, and the Trailblazer SS. The aluminum block keeps weight down while giving a larger displacement foundation than the 5.3L family. In addition, it responds well to head and camshaft upgrades.

LS6

The LS6 is a Gen 3 aluminum block 5.7L engine from the 2001 through 2004 Corvette Z06. It is known for its aggressive factory camshaft and high-flow cylinder heads. As a build foundation, it therefore brings strong factory performance heritage and excellent head and valvetrain starting points.

LS3

The LS3 is a Gen 4 aluminum block 6.2L engine with rectangular port cylinder heads. Those heads flow significantly more air than cathedral port alternatives. It powered the 2008 through 2013 Corvette and the 2010 through 2015 Camaro SS. For naturally aspirated builds in the 510 to 560 hp range, the LS3’s airflow ceiling is consequently a real advantage.

LSX

The LSX is an aftermarket cast iron block from GM Performance Parts, built specifically for high-performance LS engine builds. It is stronger than any production LS block. For a naturally aspirated build in this range, the LSX therefore provides significant strength margin, which translates to long-term durability.

Dart Block

The Dart block is an aftermarket aluminum or iron LS block from Dart Machinery. Like the LSX, it is designed for racing and high-performance use where a production block is not enough. Dart blocks also come in multiple bore sizes, which opens up displacement options beyond standard production dimensions.

Specifications

Exact specifications depend on the build combination. The table below shows the general specification range for this listing.

Because specifications vary by build, contact us at +1 (216) 230-5433 or Sales@53lsengine.com for the exact details on the current unit.

What Is Included

This engine ships as a complete assembled unit. Contact us to confirm the exact component list before ordering.

Typically Included

• Complete assembled long block with performance rotating assembly
• Performance cylinder heads, fully assembled
• Performance intake manifold
• Fuel rails and injectors sized for the build
• Valve covers
• Oil pan
• Timing cover
• Harmonic balancer
• Full build specification sheet

Available on Select Builds or Upon Request

• Engine wiring harness
• ECU and controller
• Throttle body and sensors
• Accessory drive components
• Coil packs and ignition components

Not Included Unless Confirmed

• Transmission
• Flywheel or flexplate
• Engine mounts
• Exhaust manifolds or headers
• Chassis-specific accessories

Always confirm the complete component list with us before ordering. A complete crate engine and a bare long block are different purchases.

Supporting Systems You Will Need

A high-output LS engine requires compatible supporting systems. Plan these before the engine arrives.

ECU and Tune

A performance camshaft and modified induction require an ECU calibration matched to the build. A stock factory tune does not manage the fuel and ignition needs of a high-output LS correctly. As a result, budget for a professional tune from a shop experienced with high-output LS applications.

Fuel System

This engine uses injectors sized for the build’s fuel demand. Therefore, your fuel pump, lines, and regulator need to be rated for that flow. Confirm your fuel system capacity before the engine arrives.

Exhaust

A high-output LS flows significantly more air than a stock engine. Because of that, restrictive exhaust limits what the engine can do. Performance headers matched to the cylinder head port style and a free-flowing exhaust are required to reach the output target.

Cooling System

More power means more heat. Confirm your cooling system can handle it. A radiator that worked with a stock engine may not hold up under sustained hard use with a 510 to 560 hp build.

Build Documentation

Every pro-built crate engine ships with a full build specification sheet. That sheet confirms what is inside the engine before it goes into your project.

• Block specification — Block family, bore size, and deck condition documented
• Rotating assembly — Rod and piston specification, bearing clearances documented
• Compression ratio — Confirmed based on head, piston, and gasket combination
• Camshaft specification — Lift, duration, and LSA documented
• Cylinder head specification — Casting, port work, and valve job documented
• Valve spring pressure — Confirmed at spec for the camshaft before assembly

Pricing and Availability

Pricing depends on the block platform, build specification, and included components. Contact us at +1 (216) 230-5433 or Sales@53lsengine.com for current pricing, build specification, output figures, and availability.

Also review our refund and return policy before purchasing so you understand the full terms.

Shipping

Every engine ships on a certified freight pallet with all ports plugged and the assembly secured for transit. You receive a tracking number when it ships. Before signing the delivery receipt, inspect the pallet and packaging carefully. If you see visible shipping damage, note it with the carrier immediately.

For residential deliveries, confirm liftgate service with the freight carrier when scheduling.

Other Engine Options

Not sure this is the right fit? Browse our other options.

• Gen 3 Vortec 5.3 LS LM7 — stock used engine for 1999 to 2007 replacements and mild swaps
• Gen 4 Vortec 5.3 LS LH6 — stock used engine for 2007 to 2013 applications with VVT
• Gen 5 EcoTec3 5.3 LS L83 and L86 — stock used engine for 2014 and newer applications
• 5.3 LS Stage 3 Performance Build — built 5.3 LS for performance street and swap builds
• 525 HP Chevrolet Performance LS3 Crate Engine — factory GM Performance unit with GM warranty
• Browse all used 5.3 LS engines
• Browse junkyard 5.3 LS engines
• Browse all build 5.3 LS engines

Frequently Asked Questions

What platforms are available for this crate engine?
The listing covers LQ iron block, LS2 aluminum, LS6 aluminum, LS3 aluminum, LSX iron, and Dart aluminum or iron block options. Contact us to confirm which combination is in the current unit and what else is available to order.

How much horsepower does this engine make?
This listing covers a 510 to 560 hp output range. However, exact output depends on the block, head, camshaft, and induction combination in the current build. Contact us at +1 (216) 230-5433 for the exact figure.

Is this engine street driveable?
Yes, with the correct supporting systems. You need a matched ECU calibration, a compatible fuel system, and performance exhaust. This is not a mild street build, but it is not a race-only engine either.

Do I need a tune?
Yes. A high-output performance camshaft and modified induction require an ECU calibration matched to the specific build. Therefore, budget for a professional tune from an experienced LS shop.

What is the difference between the LSX and Dart blocks?
The LSX is an aftermarket cast iron block from GM Performance Parts, while the Dart block is an aftermarket aluminum or iron block from Dart Machinery. Both are built for racing and high-performance use with strength beyond production blocks. Contact us for detail on the block in the current build.

What comes with the engine?
A full build specification sheet ships with every engine. In addition, contact us for the current component list, camshaft specification, compression ratio, block combination, and output figures before ordering.

Can I get this shipped to my location?
Yes. We ship to all 50 states via freight carrier on a secured pallet. Contact us with your delivery ZIP code and we then confirm the shipping cost before you order.

What warranty comes with this engine?
Warranty terms vary by build. Contact us at +1 (216) 230-5433 or Sales@53lsengine.com to confirm coverage before purchasing. Also review our refund and return policy.

Ready to Order

If you are ready for a professionally built 510 to 560 hp complete LS crate engine with a documented specification, contact us before you order. We then confirm the build combination, output figures, included components, pricing, and shipping cost for your location before you commit.

Call us: +1 (216) 230-5433
Email us: Sales@53lsengine.com

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