LT7 Engine for Sale: The Ultimate Guide to GM’s High-Performance Marvel

The LT7 engine is GM’s latest high-performance small-block V8, introduced to revolutionize the Corvette lineup and other top-tier performance vehicles. As demand grows for crate engines and performance swaps, the phrase “LT7 engine for sale” is lighting up online searches. In this guide, we’ll walk you through everything you need to know before purchasing one of the most potent GM performance engines ever made.

Table of Contents

Introduction
What is the LT7 Engine?
LT7 Engine Specifications
Key Features of the LT7 Engine
LT7 vs LT4 vs LT5 – What’s the Difference?
Vehicles Compatible with the LT7
Why Buy an LT7 Engine?
Where to Find the LT7 Engine for Sale
Brand-New vs Used LT7 Engines
Pricing Guide for LT7 Engines
What to Consider Before Buying
Installation and Compatibility Tips
Performance Tuning Options
Maintenance and Reliability
Warranty Options for LT7 Engines
Customer Reviews and Real-World Performance
Common Issues and Troubleshooting
Tips for Buying a Crate Engine
LT7 Engine for Sale: Online Listings and Platforms
Final Thoughts
Frequently Asked Questions (FAQs)

1. Introduction

Whether you’re a car enthusiast, professional builder, or looking to swap out your aging powertrain, this guide will help you make an informed decision.

2. What is the LT7 Engine?

The LT7 is a 5.5L twin-turbocharged V8 engine developed by General Motors. This engine debuted in the C8 ZR1 Corvette and represents a new chapter in GM’s performance engine history. Unlike its predecessors, the LT7 is designed with cutting-edge technologies like flat-plane crankshaft, dual overhead cams (DOHC), and twin turbocharging, making it the most advanced V8 from GM yet.

It is the forced induction sibling of the LT6, which powers the C8 Z06.

3. LT7 Engine Specifications

Here are the most up-to-date (and rumored) specs for the LT7 engine:

Specification	Details
Displacement	5.5 Liters
Configuration	V8, 32-Valve DOHC
Induction	Twin Turbocharged
Horsepower	Estimated 850–900 hp
Torque	800–850 lb-ft
Crankshaft	Flat-plane
Redline	8,000 RPM (est.)
Fuel System	Direct Injection
Block Material	Aluminum
Compression Ratio	~9.5:1 (est. for turbo engines)

These specifications make it clear: the LT7 is designed for serious power and speed.

4. Key Features of the LT7 Engine

Twin Turbochargers: Unlike the naturally aspirated LT6, the LT7 uses dual turbochargers for immense boost and power output.
Flat-Plane Crankshaft: Allows for faster revving and a unique engine tone.
Dual Overhead Cams (DOHC): Improves airflow and efficiency at high RPMs.
High-Performance Cooling: Engineered to withstand high track temperatures.
Race-Ready Build: Developed with racing and track enthusiasts in mind.

5. LT7 vs LT4 vs LT5 – What’s the Difference?

Engine	Induction	Displacement	Horsepower	Crankshaft	Notable Application
LT4	Supercharged	6.2L	650 hp	Cross-plane	C7 Z06, Camaro ZL1
LT5	Supercharged	6.2L	755 hp	Cross-plane	C7 ZR1
LT7	Twin Turbo	5.5L	850+ hp	Flat-plane	C8 ZR1 (2025+)

The LT7 offers superior power, better response, and more efficiency, thanks to the latest turbocharging technology and advanced engine design.

6. Vehicles Compatible with the LT7

Although officially developed for the C8 ZR1, the LT7 can be adapted to various platforms:

Chevrolet C8 Z06/ZR1 (direct fitment)
Camaro SS/ZL1 (with modifications)
Restomod Muscle Cars (e.g., Chevelle, Nova, GTO)
Corvette Restorations (C1 to C7)
Off-road builds and custom hot rods

Note: Some applications may require custom ECU programming, motor mounts, or upgraded cooling systems.

7. Why Buy an LT7 Engine?

Unmatched Power: With up to 900 horsepower, it surpasses most crate engines in its class.
Modern Tech: Flat-plane crank and twin turbos provide excellent throttle response and high-RPM operation.
Track-Proven Engineering: Built from lessons learned in endurance and GT racing.
Future-Proof Swap: Ideal for restomods or engine swaps with the latest technology.

8. Where to Find the LT7 Engine for Sale

As of mid-2025, LT7 crate engines are limited but becoming available through:

GM Performance Parts (Chevrolet Performance)
Authorized GM Dealerships
Aftermarket Engine Distributors
Online Marketplaces:
- eBay Motors
- Facebook Marketplace
- RacingJunk.com
- JEGS or Summit Racing (pending release)
Performance Builders/Swap Shops

Ensure you’re buying from trusted sellers with verified engine numbers.

9. Brand-New vs Used LT7 Engines

Type	Pros	Cons
New	Factory warranty, untouched internals	Higher price, limited availability
Used	Lower cost, may include extras (ECU, mounts)	Potential wear, risk of abuse
Remanufactured	Rebuilt to OEM or better specs	Mid-range price, depends on rebuilder

10. Pricing Guide for LT7 Engines

The pricing of LT7 engines varies based on condition, mileage, and source:

Brand New from GM: $28,000 – $35,000 (estimated)
Used Engines: $18,000 – $25,000
Remanufactured Units: $22,000 – $29,000

Prices may change as more units become available and the aftermarket adapts.

11. What to Consider Before Buying

Fitment: Will it physically fit in your engine bay?
Electronics: Does it include the ECU and wiring harness?
Warranty: What kind of guarantee does the seller offer?
Cooling System: Can your vehicle handle the added heat?
Transmission Compatibility: Designed for DCT, but can be adapted.

12. Installation and Compatibility Tips

Use GM’s Connect & Cruise System for plug-and-play integration (when available).
Consider aftermarket mounts or custom fabrication.
Upgrade your fuel system to support direct injection and turbo needs.
Use CAN-compatible standalone ECUs (like MoTeC or Holley).

13. Performance Tuning Options

The LT7 offers immense tuning potential:

ECU Flashing & Custom Maps
Boost Controller Adjustments
Aftermarket Intakes/Exhausts
Methanol Injection Kits
Performance Turbo Upgrades

Tuning can increase output beyond 1,000+ hp with the right internals and supporting mods.

14. Maintenance and Reliability

The LT7, like the LT6, is built with track use in mind, but high power demands proper care:

Regular oil changes (synthetic 0W-40 recommended)
Frequent turbo inspection
Monitor for detonation or overheating
Use 93-octane fuel minimum (or E85 with tuning)

15. Warranty Options for LT7 Engines

Most crate engines from GM include a limited 2-year / 24,000-mile warranty. Used engines may come with:

No warranty
30–90 day startup guarantee
Extended warranties from rebuilders

Always request documentation.

16. Customer Reviews and Real-World Performance

As this engine enters the market, early adopters report:

Instant throttle response
High-end pull above 6,000 RPM
Surprisingly good fuel economy (under light load)
Heat management requires careful attention
Worth the price for serious builds

17. Common Issues and Troubleshooting

While data is still limited, early observations suggest:

Turbo lag is minimal, but heat soak can reduce performance.
Oil consumption may occur under extended track use.
Flat-plane crank noise can mimic engine knock—diagnose carefully.
Parts availability may be limited for now.

18. Tips for Buying a Crate Engine

Verify the VIN/Serial Number
Ask for dyno sheets or testing results
Check for included components (e.g., ECU, turbos, sensors)
Understand return policy
Use an escrow service for large purchases online

19. LT7 Engine for Sale: Online Listings and Platforms

Top platforms to monitor:

GM Performance Website
https://www.chevrolet.com/performance-parts/crate-engines
eBay Motors – LT7 Section
https://www.ebay.com
JEGS
https://www.jegs.com
Summit Racing
https://www.summitracing.com
Facebook Groups like “Corvette Parts Marketplace” or “LSx Swappers”

20. Final Thoughts

The LT7 engine is a game-changer in the world of performance V8s. If you’re serious about power, sound, and modern engineering, this engine represents the future of high-performance internal combustion. While initial availability is limited, enthusiasts are already queuing up to secure their piece of GM history.

Whether you’re planning a Corvette ZR1 build, pro-touring restomod, or custom track weapon, the LT7 is a worthy heart for your machine.

21. Frequently Asked Questions (FAQs)

Q1: What car comes with the LT7 engine?

The LT7 is debuting in the 2025 Corvette ZR1.

Q2: Can I buy the LT7 as a crate engine?

Yes, GM Performance is expected to release the LT7 as a crate engine, but availability may be limited during the first year.

Q3: What is the horsepower of the LT7 engine?

Early figures suggest 850 to 900 horsepower, depending on boost and tuning.

Q4: How much does an LT7 engine cost?

Brand new: ~$30,000–$35,000
Used: $18,000–$25,000
Remanufactured: $22,000–$29,000

Q5: Is the LT7 engine reliable?

Yes, it’s built for high-performance applications and track use, but proper maintenance is key.

Q6: What’s the difference between the LT6 and LT7?

LT6 is naturally aspirated, 670 hp
LT7 is twin-turbocharged, 850+ hp
Both share a 5.5L flat-plane V8 platform

Q7: Is the LT7 better than the LT5?

In many ways, yes—modern tech, better efficiency, and more tuning potential.

Q8: Where can I find the LT7 engine for sale?

Check GM Performance dealers, online platforms like eBay, and performance engine retailers.

Q9: What transmission is compatible with the LT7?

The LT7 is designed for GM’s dual-clutch transmission, but it can be adapted to manuals or automatics with custom bell housings.

Q10: Is the LT7 good for daily driving?

It can be used daily, but expect a stiff, race-ready character with increased fuel demands and turbo lag under load.

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