LS CHEVY LS 5.3 LS 510 HP COMPLETE CRATE ENGINE PROBUILT LQ LS2 LS6 6.2 Ls3 LSX

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

Five hundred and ten horsepower from a naturally aspirated LS is a real number. Getting there takes the right block, the right heads, and a camshaft that ties the whole combination together. Do it piecemeal and you end up with parts that fight each other.

This pro-built complete crate engine arrives with that work already done. We build it on proven LQ, LS2, LS6, LS3, and LSX platforms in displacements from 5.3L up to 6.2L. Every unit ships fully assembled with a specification sheet that documents exactly what went into it.

At 53LSEngine.com, this is the engine for builders who want the output figure settled before the crate ever arrives.

Why Buy Built Instead of Building It Yourself

Building a 510 horsepower LS yourself means sourcing a core, sending it out for machine work, selecting matched components, and then assembling everything to spec. Each step introduces cost, delay, and risk.

A pro-built engine collapses all of that into one purchase. The machine work is done. The components already match. The assembly clearances are set and documented. Consequently, you spend your time installing the engine rather than managing an engine project alongside your actual build.

In addition, you get a known output figure to plan your drivetrain and gearing around. That certainty is worth something on its own.

Block Platforms We Build On

This listing covers several proven LS foundations. Each one brings different strengths, so the right choice depends on your goals and budget.

LQ Iron Block

The LQ family covers the LQ4 and LQ9, both Gen 3 iron block 6.0L engines from GM trucks and vans. Iron blocks hold their bore geometry under sustained heat and load exceptionally well. Because they also cost less than aftermarket alternatives, the LQ makes a strong value foundation for a high-output naturally aspirated build.

LS2 Aluminum Block

The LS2 is a Gen 4 aluminum 6.0L that powered the 2005 through 2007 Corvette, the 2006 Pontiac GTO, and the Trailblazer SS. It gives you more displacement than the 5.3L family while keeping weight down. Furthermore, it responds well to head and camshaft upgrades.

LS6 Aluminum Block

The LS6 came from the 2001 through 2004 Corvette Z06. GM built it with an aggressive camshaft and high-flow cathedral port heads from the factory. As a build foundation, it therefore starts you further ahead than a standard truck block.

LS3 Aluminum Block

The LS3 is a Gen 4 aluminum 6.2L with rectangular port heads. Those heads flow considerably more than any cathedral port design. For a naturally aspirated build chasing 510 horsepower, that airflow ceiling gives you genuine headroom rather than a struggle.

LSX Iron Block

GM Performance Parts built the LSX specifically for high-horsepower LS applications. It is stronger than any production LS block by a wide margin. At this output level you will not approach its limit, which means it simply never becomes a concern.

Displacement Options: 5.3L Through 6.2L

We build this engine in several displacements depending on the block platform.

The 5.3L combination reaches 510 horsepower through head flow, camshaft specification, and RPM. It makes its power higher in the rev range. For lighter chassis and builds that see high RPM regularly, that suits the application well.

Larger displacements reach the same peak with more cubic inches doing the work. As a result, they build torque earlier and feel stronger in normal driving. For heavier vehicles or street-focused builds, the 6.0L and 6.2L options are the better match.

Contact us to discuss which displacement fits your chassis weight and intended use before you order.

Engine Specifications

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

What Ships With Your Engine

This arrives as a complete assembled unit. Contact us to confirm the exact contents of the current build.

In Every Build

• Complete assembled long block with forged rotating assembly
• Cylinder heads, fully assembled with matched springs
• Performance intake manifold
• Fuel rails and injectors sized for the output
• Valve covers
• Oil pan
• Timing cover
• Harmonic balancer
• Build specification sheet

Available on Request

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

Sourced Separately

• Transmission
• Flywheel, flexplate, or torque converter
• Engine mounts
• Exhaust manifolds or headers
• Fuel pump and lines
• Radiator and cooling components
• Starter

Always confirm the full component list in writing before ordering.

Systems You Need to Have Ready

The engine handles its side of the equation. Your chassis handles the rest, so plan these before delivery.

Calibration and Tuning

A performance camshaft and upgraded induction demand a calibration built for the combination. A stock tune cannot manage it correctly. Therefore, budget for a professional dyno or road tune from a shop experienced with high-output LS engines.

Fuel Delivery Capacity

The injectors in this build flow considerably more than factory units. Your fuel pump, lines, and regulator have to keep up. Undersized delivery leans the engine out at wide-open throttle, and that ruins pistons quickly.

Exhaust Sizing

At 510 horsepower the engine moves serious air. Restrictive exhaust throws that away. You need headers matched to your cylinder head port configuration and a system sized for the output.

Note that LS3 builds use rectangular port heads. Cathedral port headers will not seal against them, so confirm your header selection matches your specific build.

Cooling Capacity

More power produces more heat. A radiator sized for a stock engine will not hold temperature under sustained hard driving. Size your cooling system for 510 horsepower from the start.

Documentation That Ships With the Engine

Every build leaves with a complete specification sheet. Your tuner needs that information, and you deserve to see exactly what you bought.

• Block details — Platform, bore size, and deck condition
• Rotating assembly — Rod and piston specification with bearing clearances
• Compression ratio — Confirmed from the head, piston, and gasket combination
• Camshaft specification — Lift, duration, and lobe separation angle
• Cylinder head details — Casting, port work, and valve job
• Valve spring pressure — Confirmed at spec for the camshaft
• Injector sizing — Documented for calibration

Cost and Current Availability

Pricing depends on the block platform, displacement, and how complete you want the package. An LQ iron block build costs less than an LSX or LS3 combination. Adding electronics and accessories moves the number as well.

Contact us at +1 (216) 230-5433 or Sales@53lsengine.com for current pricing, platform availability, confirmed output figures, and lead times.

Also review our refund and return policy before purchasing so the terms are clear.

How the Engine Arrives

Every unit ships on a certified freight pallet with all ports plugged and the assembly secured against movement. Loose components ship boxed alongside the pallet. You receive tracking as soon as it leaves.

Inspect the pallet and packaging thoroughly before you sign the delivery receipt. If you see damage, note it with the carrier right then rather than after the driver leaves.

For residential addresses, arrange liftgate service with the freight carrier when you schedule the delivery.

Compare Our Other LS Engines

Not sure this build matches your project? Here are the alternatives.

• Gen 3 Vortec 5.3 LS LM7 — stock used engine for replacements and simple swaps
• Gen 4 Vortec 5.3 LS LH6 — stock used engine 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 — BTR cam and 243 heads at a lower price point
• 525 HP Chevrolet Performance LS3 Crate Engine — factory GM new unit with GM warranty
• 510 to 560 HP Pro Built Complete Crate Engine — adds Dart block options
• Browse all used 5.3 LS engines
• Browse junkyard 5.3 LS engines
• Browse all build 5.3 LS engines

Common Questions From Buyers

Choosing Your Platform

Which block platform should I pick?
For value, the LQ iron block is hard to beat. For weight savings with good displacement, choose the LS2. For maximum airflow, the LS3 with its rectangular port heads leads. For absolute strength margin, the LSX. Contact us with your goals and we recommend the fit.

Does displacement change the horsepower figure?
All combinations target 510 horsepower. However, larger displacement reaches that peak with more torque underneath it. Consequently, a 6.2L feels stronger in normal driving than a 5.3L making the same peak power.

Can I request a specific block?
Contact us at +1 (216) 230-5433 to discuss platform availability. We build to order in many cases, so tell us what you want.

Running the Engine

Can I drive this on the street?
Yes, with the right supporting systems. You need a matched calibration, adequate fuel delivery, and free-flowing exhaust. It is not a mild engine, but it is not race-only either.

Is a tune required?
Yes. The camshaft and induction changes require a calibration built specifically for the combination. Plan for professional tuning as part of your total cost.

What fuel does it need?
Confirm the octane requirement for your specific build when you order. Higher compression combinations require premium fuel.

Ordering Details

What is included in the price?
The complete assembled engine plus the components listed above. Electronics and accessories are available separately. Contact us for the full list on the current build.

How long until it ships?
Lead time depends on platform availability and build specification. Contact us at +1 (216) 230-5433 for current timing.

Do you ship everywhere?
We ship to all 50 states via freight carrier. Contact us with your ZIP code and we confirm the cost before you order.

What about warranty?
Terms vary by build and intended use. Contact us to confirm coverage before purchasing. Also review our refund and return policy.

Start Your Build Conversation

If you want 510 horsepower settled before the engine arrives, contact us before ordering. We then confirm your platform, displacement, output figures, component list, pricing, and delivery timing.

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

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