Engines • Transmissions • Installation
Built in East Texas. Shipped nationwide.
Engines • Transmissions • Installation
Compare Gen V LT replacement, rebuilt, recycled and performance engine options from Big 3. Nationwide freight, Texas installation and VIN verification.
GM Gen V LT engines include truck/SUV and passenger-car variants. Big 3 helps customers compare recycled, customer-core rebuilt, standard rebuilt, enhanced, premium new-component, new long-block and performance options. Exact fitment, configuration, availability and lead time are confirmed before ordering.
Model name and displacement are the starting point, not a fitment guarantee. Send your VIN, engine code if known, modifications and intended use before choosing a replacement. The selected product and written quote determine the build, included parts and warranty.
For example, the 2018 Silverado lists the 5.3L L83 and 6.2L L86. Do not select a 6.2L engine for a 5.3L vehicle as a routine replacement; a displacement change needs a separate project review.
Compare L86 replacement and performance buildsThe 2021 V8 range includes the 5.3L L84 and 6.2L L87. Earlier vehicles require their own engine identification. The same model badge does not make different generations interchangeable.
Review L87 engine optionsThe Gen V LT1 appears in Camaro SS and C7 Corvette applications. Vehicle-specific oiling, controls and supplied components still need review; a shared LT family name is not enough to select a truck engine or car engine.
Request a VIN and build reviewSend Big 3 your VIN, model year and original engine code so we can confirm the correct assembly and installation requirements before purchase.
Review the current price, supplied components and product-specific warranty before continuing to checkout. These are L86 choices, not universal replacements for every LT application.
Need the engine installed? Request an installation and vehicle-transport quote.
Choose your original engine family first. Open a product below to review its current price, included components, fitment and warranty, then use Place Order. These are separate applications, not interchangeable versions of one engine. Customer-core rebuilds require your rebuildable engine.
5.3L options for the Silverado/Sierra and Tahoe/Suburban/Yukon applications identified below. Select the truck or SUV listing, then confirm your VIN and original engine code.
5.3L options for verified L84 applications. Compare recycled, customer-core and replacement long-block builds. Non-DFM products require the hardware and calibration specified in their listings.
Rebuild your supplied L82 engine. Review the listing for price, scope and warranty, and confirm VIN/RPO before ordering. This is not an exchange long-block offer.
View L82 rebuild & orderModel years identify the listed application family, not automatic fitment. Verify VIN/RPO, controls, fuel system, accessories and emissions configuration. For L82 or an uncertain engine code, request engine identification before ordering.
Compare the current price, supplied components and warranty in the selected LT1 listing. Customer-engine rebuilds require your rebuildable engine; exchange core terms are shown with the product.
For your confirmed Gen V LT1 Camaro or Corvette application, review the actual RaceKing build, current price, supplied components and product-specific warranty before ordering. Vehicle-specific oiling, controls and fitment still require verification.
Compare the broader LT performance lineup alongside the LT1-specific offers above. These catalog packages cover verified LT1/L86-based combinations; confirm Camaro or Corvette configuration, wet- or dry-sump oiling, supporting equipment and calibration before ordering.
Cam and valvetrain package.
Build planning window: 14 weeks. Freight transit is additional; confirm your configuration and completion date.
Forged drop-in rotating package.
Build planning window: 14 weeks. Freight transit is additional; confirm your configuration and completion date.
Forged and studded combination.
Build planning window: 14 weeks. Freight transit is additional; confirm your configuration and completion date.
RaceKing heads with Katech CNC porting.
Build planning window: 8 weeks. Freight transit is additional; confirm your configuration and completion date.
Stock-displacement build with ported heads.
Build planning window: 8 weeks. Freight transit is additional; confirm your configuration and completion date.
Atlas package with ARP rod bolts.
Build planning window: 8 weeks. Freight transit is additional; confirm your configuration and completion date.
Atlas package with bottom-end studs.
Build planning window: 8 weeks. Freight transit is additional; confirm your configuration and completion date.
Forged crankshaft, pistons and rods.
Build planning window: 8 weeks. Freight transit is additional; confirm your configuration and completion date.
Sleeved 416 stroker combination.
Build planning window: 14 weeks. Freight transit is additional; confirm your configuration and completion date.
416 stroker with shaft rockers.
Build planning window: 14 weeks. Freight transit is additional; confirm your configuration and completion date.
Sleeved 6.6L custom combination.
Build planning window: 14 weeks. Freight transit is additional; confirm your configuration and completion date.
Shock Factor and stock-displacement Atlas builds use an eight-week planning window. RaceKing packages, stroker and bespoke builds can require fourteen weeks. An L87 adaptation needs its own confirmed schedule. Named performance packages carry their own written coverage; stock-engine coverage does not automatically apply.
These DOHC engines belong in a separate specialty program, not the pushrod L86 upgrade ladder. Choose the original engine in your Corvette, then compare exchange and customer-engine rebuild options.
Naturally aspirated 5.5L DOHC V8 for the C8 Z06. $12,823 exchange or customer-engine rebuild; exchange core charge $3,500.
View LT6 build and request optionsTwin-turbo 5.5L DOHC V8 combustion-engine offering. $12,823 exchange or customer-engine rebuild; exchange core charge $3,500.
View LT7 build and request optionsBoth use the L86 Standard warranty: four-year/100,000-mile limited parts-only coverage, subject to written terms. Applicable tax, freight, installation and separately specified equipment are additional. Engine identity and supplied components require verification.
Each engine variant is optimized for specific applications. Contact us at 903-262-9502 to confirm which variant is correct for your vehicle.
Used engine; mileage and availability vary
Customer supplies a rebuildable core
Rebuilt engine options
Enhanced configuration options
Premium new-component options
New long-block options
Custom high-performance engines
| Type | How Sold | Availability | Warranty |
|---|---|---|---|
| Recycled | As-is | Varies by product | 6 months; extension to 1 year available where offered |
| Customer-Core Rebuild | Core required | Confirm before order | Varies by product; see controlling terms |
| Standard Rebuilt | Configuration confirmed before order | Confirm before order | Varies by product; see controlling terms |
| Enhanced | Configuration confirmed before order | Confirm before order | Varies by product; see controlling terms |
| Premium New-Component | Configuration confirmed before order | Confirm before order | Varies by product; see controlling terms |
| New Long Block | Configuration confirmed before order | Confirm before order | Varies by product; see controlling terms |
| Performance | Build to order | Typical 2-4 weeks; may take longer | Varies by product; see controlling terms |
AFM and DFM are different GM cylinder-deactivation systems. Exact hardware and calibration vary by engine and vehicle. Confirm the VIN and desired configuration before ordering.
Big 3 requires VIN verification before sale to confirm the engine family and proposed configuration for the customer's application.
Tinware is typically transferred from your old engine or purchased separately depending on the package.
L83, L84, L86, L87
LT1, LT4
Important: Fitment is specific to vehicle application and must be verified by VIN. Never assume an engine will fit your vehicle without verification.
Nationwide engine freight and vehicle transport are available. Cost, carrier, packaging and insurance terms are confirmed with the order.
Core terms, the current charge and return requirements are confirmed with the order.
Availability and lead time vary by engine and configuration. Big 3 confirms the current schedule before an order is placed.
Installation is available by appointment in Troup, Texas. Scope is quoted after VIN and application review.
Call for installation quoteLocal towing and nationwide vehicle transport can be coordinated; transport is not warranty-covered.
Discuss transport optionsWarranty coverage varies by product; review the controlling warranty terms before purchase.
View Complete Warranty DetailsAt Big 3 Engine, we bring the original shop experience to engine replacement. Our team applies hands-on GM engine experience to help customers compare Gen V LT options and confirm the proposed configuration before ordering.
Big 3's engine program is supported by ETI Performance LLC, a full-service machine shop equipped with Van Norman and Sunnen machinery. Specialized cylinder-head porting is performed by Katech using Rottler CNC equipment. We also use Spintron testing to evaluate valvetrain operation on selected Big 3 builds and engines received from other builders. The machining, porting and testing performed depends on the engine and ordered configuration.
From initial consultation and VIN verification through installation and post-sale support, we're committed to making your engine replacement experience straightforward and reliable.
Our team is available to answer questions, discuss options, and help you choose the right engine for your specific needs and budget.
Contact our team today to discuss your engine needs, get a quote, or arrange installation.
Engines • Transmissions • Installation
Built in East Texas. Shipped nationwide.
Engines • Transmissions • Installation
Compare Gen V LT replacement, rebuilt, recycled and performance engine options from Big 3. Nationwide freight, Texas installation and VIN verification.
GM Gen V LT engines include truck/SUV and passenger-car variants. Big 3 helps customers compare recycled, customer-core rebuilt, standard rebuilt, enhanced, premium new-component, new long-block and performance options. Exact fitment, configuration, availability and lead time are confirmed before ordering.
Model name and displacement are the starting point, not a fitment guarantee. Send your VIN, engine code if known, modifications and intended use before choosing a replacement. The selected product and written quote determine the build, included parts and warranty.
For example, the 2018 Silverado lists the 5.3L L83 and 6.2L L86. Do not select a 6.2L engine for a 5.3L vehicle as a routine replacement; a displacement change needs a separate project review.
Compare L86 replacement and performance buildsThe 2021 V8 range includes the 5.3L L84 and 6.2L L87. Earlier vehicles require their own engine identification. The same model badge does not make different generations interchangeable.
Review L87 engine optionsThe Gen V LT1 appears in Camaro SS and C7 Corvette applications. Vehicle-specific oiling, controls and supplied components still need review; a shared LT family name is not enough to select a truck engine or car engine.
Request a VIN and build reviewSend Big 3 your VIN, model year and original engine code so we can confirm the correct assembly and installation requirements before purchase.
Review the current price, supplied components and product-specific warranty before continuing to checkout. These are L86 choices, not universal replacements for every LT application.
Need the engine installed? Request an installation and vehicle-transport quote.
Choose your original engine family first. Open a product below to review its current price, included components, fitment and warranty, then use Place Order. These are separate applications, not interchangeable versions of one engine. Customer-core rebuilds require your rebuildable engine.
5.3L options for the Silverado/Sierra and Tahoe/Suburban/Yukon applications identified below. Select the truck or SUV listing, then confirm your VIN and original engine code.
5.3L options for verified L84 applications. Compare recycled, customer-core and replacement long-block builds. Non-DFM products require the hardware and calibration specified in their listings.
Rebuild your supplied L82 engine. Review the listing for price, scope and warranty, and confirm VIN/RPO before ordering. This is not an exchange long-block offer.
View L82 rebuild & orderModel years identify the listed application family, not automatic fitment. Verify VIN/RPO, controls, fuel system, accessories and emissions configuration. For L82 or an uncertain engine code, request engine identification before ordering.
Compare the current price, supplied components and warranty in the selected LT1 listing. Customer-engine rebuilds require your rebuildable engine; exchange core terms are shown with the product.
For your confirmed Gen V LT1 Camaro or Corvette application, review the actual RaceKing build, current price, supplied components and product-specific warranty before ordering. Vehicle-specific oiling, controls and fitment still require verification.
Compare the broader LT performance lineup alongside the LT1-specific offers above. These catalog packages cover verified LT1/L86-based combinations; confirm Camaro or Corvette configuration, wet- or dry-sump oiling, supporting equipment and calibration before ordering.
Cam and valvetrain package.
Build planning window: 14 weeks. Freight transit is additional; confirm your configuration and completion date.
Forged drop-in rotating package.
Build planning window: 14 weeks. Freight transit is additional; confirm your configuration and completion date.
Forged and studded combination.
Build planning window: 14 weeks. Freight transit is additional; confirm your configuration and completion date.
RaceKing heads with Katech CNC porting.
Build planning window: 8 weeks. Freight transit is additional; confirm your configuration and completion date.
Stock-displacement build with ported heads.
Build planning window: 8 weeks. Freight transit is additional; confirm your configuration and completion date.
Atlas package with ARP rod bolts.
Build planning window: 8 weeks. Freight transit is additional; confirm your configuration and completion date.
Atlas package with bottom-end studs.
Build planning window: 8 weeks. Freight transit is additional; confirm your configuration and completion date.
Forged crankshaft, pistons and rods.
Build planning window: 8 weeks. Freight transit is additional; confirm your configuration and completion date.
Sleeved 416 stroker combination.
Build planning window: 14 weeks. Freight transit is additional; confirm your configuration and completion date.
416 stroker with shaft rockers.
Build planning window: 14 weeks. Freight transit is additional; confirm your configuration and completion date.
Sleeved 6.6L custom combination.
Build planning window: 14 weeks. Freight transit is additional; confirm your configuration and completion date.
Shock Factor and stock-displacement Atlas builds use an eight-week planning window. RaceKing packages, stroker and bespoke builds can require fourteen weeks. An L87 adaptation needs its own confirmed schedule. Named performance packages carry their own written coverage; stock-engine coverage does not automatically apply.
These DOHC engines belong in a separate specialty program, not the pushrod L86 upgrade ladder. Choose the original engine in your Corvette, then compare exchange and customer-engine rebuild options.
Naturally aspirated 5.5L DOHC V8 for the C8 Z06. $12,823 exchange or customer-engine rebuild; exchange core charge $3,500.
View LT6 build and request optionsTwin-turbo 5.5L DOHC V8 combustion-engine offering. $12,823 exchange or customer-engine rebuild; exchange core charge $3,500.
View LT7 build and request optionsBoth use the L86 Standard warranty: four-year/100,000-mile limited parts-only coverage, subject to written terms. Applicable tax, freight, installation and separately specified equipment are additional. Engine identity and supplied components require verification.
Each engine variant is optimized for specific applications. Contact us at 903-262-9502 to confirm which variant is correct for your vehicle.
Used engine; mileage and availability vary
Customer supplies a rebuildable core
Rebuilt engine options
Enhanced configuration options
Premium new-component options
New long-block options
Custom high-performance engines
| Type | How Sold | Availability | Warranty |
|---|---|---|---|
| Recycled | As-is | Varies by product | 6 months; extension to 1 year available where offered |
| Customer-Core Rebuild | Core required | Confirm before order | Varies by product; see controlling terms |
| Standard Rebuilt | Configuration confirmed before order | Confirm before order | Varies by product; see controlling terms |
| Enhanced | Configuration confirmed before order | Confirm before order | Varies by product; see controlling terms |
| Premium New-Component | Configuration confirmed before order | Confirm before order | Varies by product; see controlling terms |
| New Long Block | Configuration confirmed before order | Confirm before order | Varies by product; see controlling terms |
| Performance | Build to order | Typical 2-4 weeks; may take longer | Varies by product; see controlling terms |
AFM and DFM are different GM cylinder-deactivation systems. Exact hardware and calibration vary by engine and vehicle. Confirm the VIN and desired configuration before ordering.
Big 3 requires VIN verification before sale to confirm the engine family and proposed configuration for the customer's application.
Tinware is typically transferred from your old engine or purchased separately depending on the package.
L83, L84, L86, L87
LT1, LT4
Important: Fitment is specific to vehicle application and must be verified by VIN. Never assume an engine will fit your vehicle without verification.
Nationwide engine freight and vehicle transport are available. Cost, carrier, packaging and insurance terms are confirmed with the order.
Core terms, the current charge and return requirements are confirmed with the order.
Availability and lead time vary by engine and configuration. Big 3 confirms the current schedule before an order is placed.
Installation is available by appointment in Troup, Texas. Scope is quoted after VIN and application review.
Call for installation quoteLocal towing and nationwide vehicle transport can be coordinated; transport is not warranty-covered.
Discuss transport optionsWarranty coverage varies by product; review the controlling warranty terms before purchase.
View Complete Warranty DetailsAt Big 3 Engine, we bring the original shop experience to engine replacement. Our team applies hands-on GM engine experience to help customers compare Gen V LT options and confirm the proposed configuration before ordering.
Big 3's engine program is supported by ETI Performance LLC, a full-service machine shop equipped with Van Norman and Sunnen machinery. Specialized cylinder-head porting is performed by Katech using Rottler CNC equipment. We also use Spintron testing to evaluate valvetrain operation on selected Big 3 builds and engines received from other builders. The machining, porting and testing performed depends on the engine and ordered configuration.
From initial consultation and VIN verification through installation and post-sale support, we're committed to making your engine replacement experience straightforward and reliable.
Our team is available to answer questions, discuss options, and help you choose the right engine for your specific needs and budget.
Contact our team today to discuss your engine needs, get a quote, or arrange installation.
