Engines • Transmissions • Installation
Built in East Texas. Shipped nationwide.
Engines • Transmissions • Installation
Shop L86 6.2L replacement, rebuilt, remanufactured and performance engines for Silverado, Sierra, Yukon and Escalade applications. Nationwide freight and Texas installation available.
The L86 is a 6.2L Gen V LT engine used in premium GM trucks and SUVs including Silverado, Sierra, Yukon, and Escalade. Exact vehicle application and proposed configuration are confirmed by VIN before ordering.
Big 3 offers recycled, customer-core rebuilt, standard rebuilt, enhanced, premium new-component, new long-block, and performance options. Availability and exact configuration must be confirmed. All long blocks exclude tinware.
Stock-type availability is confirmed separately. Allow eight weeks for Shock Factor and stock-displacement Atlas performance builds, or fourteen weeks for RaceKing, stroker and bespoke builds. Freight transit is additional. Core charges vary by source and configuration and are individually quoted and collected separately. VIN verification is required before sale.
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.
Our complete long-block assemblies include the engine block, crankshaft, pistons, rods, cylinder heads, camshaft, and valve train. Long-block excludes tinware (intake manifold, valve covers, timing cover, oil pan, alternator, water pump).
Port and chamber work is selected for the ordered combination; scope depends on the quoted cylinder-head package.
The L86 6.2L Gen V LT engine is factory-installed in premium GM trucks and SUVs. Exact fitment depends on model year, transmission, and vehicle configuration. VIN verification is required before ordering to confirm your engine family and ensure the proposed configuration matches your application.
Before ordering, provide your vehicle's VIN so we can verify:
VIN; RPO code; exact engine code and generation; control strategy and calibration; transmission; oil pan, covers, tinware and accessory configuration; direct-injection hardware; AFM/DFM configuration; emissions equipment.
Year and model alone are not enough, and another LT-family engine is not automatically interchangeable with an L86.
Choose the right stock replacement tier based on your budget, warranty needs, and performance expectations. All tiers include VIN verification and are made to order.
Compare current catalog prices, component descriptions and product-specific warranties in the engine cards below. Core charges are individually quoted and collected separately.
Pick your engine. Review exactly what comes with it.
Choose recycled, a rebuild of your own core, or a replacement long block with the component level you want. Each option below links directly to its engine listing.
Actual shop engine shown with attached components. Covers, coils, accessories and other transferred parts are not included unless specified in your selected listing or quote.
Prices and product photographs below come from the linked catalog listings. Prices are rounded to whole dollars here; the product page and checkout show the exact amount. Product prices exclude installation, tax, freight and separately quoted core charges unless the selected offer expressly includes them. Confirm VIN, availability and the written build scope before ordering.
Loading current L86 offers...
Help me choose my L86 engineEach performance tier is built to order with specific cam, fuel system, and tuning configurations. All performance builds include one-year parts-only warranty with no core charge. Big 3's engine program is supported by ETI Performance LLC for machining and Katech for specialized cylinder-head porting using Rottler CNC equipment.
Choose the combination for your goal.
Compare the cam and valvetrain package, rotating assembly and cylinder-head work in each build below. Open the exact product to review its specification and ordering options.
Actual shop assembly shown. This photo illustrates our work; the selected product specification determines included components.
$6,984
Warranty: One-year parts-only, no core
Stock remanufactured bottom end; stock-style heads; GPI cam/spring option or BTR through SS4 NFC; 1209X springs; Manley valves; Morel link-bar lifters with guide delete; Cometic head gaskets; Fel-Pro head bolts; CHE trunnion-upgraded rockers; BTR chromoly pushrods; heads may be cut .040 where required.
Use Case:
Cammed naturally aspirated — RK1
$8,859
Warranty: One-year parts-only, no core
RK1 plus BTR/GPI forged drop-in pistons and rods and ARP head studs.
Use Case:
Entry boost — RK2
$9,984
Warranty: One-year parts-only, no core
RK2 plus bottom-end studs and high-boost head-gasket setup.
Use Case:
Higher-demand boost — RK3
$12,777
Warranty: One-year parts-only, no core
RK1-style package plus Raceking-ported heads; Katech/Rottler CNC porting where specified; CHE guides; intake/exhaust-port and chamber finishing; Manley valves; 1209X springs; titanium retainers; chromoly seats; ARP studs. A related configuration has been used in Big 3's Camaro/show car; that is not a performance guarantee.
Use Case:
High-RPM naturally aspirated — Shock Factor 737
$12,875
Warranty: One-year parts-only, no core
Prior Shock Factor-style configuration using Silvolite rather than GM Performance pistons.
Use Case:
High-RPM naturally aspirated — Atlas
$13,637
Warranty: One-year parts-only, no core
Adds ARP rod bolts.
Use Case:
High-RPM naturally aspirated — Atlas 2
$13,905
Warranty: One-year parts-only, no core
Adds bottom-end studs.
Use Case:
High-RPM naturally aspirated — Atlas Bottom-End Stud Package
$14,766
Warranty: One-year parts-only, no core
Adds GM forged crankshaft and forged drop-in pistons/rods; N/A or boost trim as specified.
Use Case:
High-RPM naturally aspirated — Atlas 2 Forged
$17,389
Warranty: One-year parts-only, no core
416 stroker, sleeved block, BTR/GPI/CP-Carrillo/Scat components depending on quote.
Use Case:
416 stroker — Captain Bligh
$17,876
Warranty: One-year parts-only, no core
Captain Bligh 416 package with COMP shaft rockers instead of CHE trunnion rockers.
Use Case:
416 stroker — Tony Montana
$21,475
Warranty: One-year parts-only, no core
Designed for complete-system combinations targeting up to approximately 1,500 hp; final capability depends on fuel, airflow, calibration, installation and operating conditions and is not a guaranteed output.
Use Case:
Bespoke 6.6L complete-system build — Grudge Boss
AFM-specific hardware is deleted. A GM Performance L8T 6.6L camshaft is used where specified on stock-oriented combinations; performance packages may use BTR, GPI or custom camshafts. ECU tuning is required. The exact parts and calibration depend on the quoted build. This does not mean every factory failure point is eliminated.
Standard and performance cam selections available:
Budget take-out
Recycled
Customer-core restoration
Customer-Core Rebuild
Warranty-focused stock replacement
Standard, Enhanced or Premium depending on component and labor-coverage preference
Cammed naturally aspirated
RK1
Entry boost
RK2
Higher-demand boost
RK3
High-RPM naturally aspirated
Shock Factor 737 or the appropriate Atlas configuration
416 stroker
Captain Bligh or Tony Montana
Bespoke 6.6L complete-system build
Grudge Boss after vehicle, fuel, air, calibration and installation review
Big 3 requires VIN verification before sale to confirm the engine family and proposed configuration for the customer's application.
Nationwide engine freight and vehicle transport are available. Local installation is appointment-only in Troup, Texas.
Core charges are individually quoted and collected separately. Core-return requirements are confirmed with the order.
Stock-type availability is confirmed separately. Performance planning windows are 8 weeks for Shock Factor and stock-displacement Atlas; 14 weeks for RaceKing, stroker and bespoke builds. Freight transit is additional.
Installed starting at $8,949 including:
Appointment-only. Warranty coverage governed by controlling terms.
We offer nationwide services:
Warranty varies by product and controlling terms are on the existing warranty page. Standard rebuilt includes 4-year/100,000-mile parts-only coverage with no labor, towing or shipping. Performance builds are one-year parts-only with no core charge.
View Complete Warranty DetailsAll pricing, specifications, warranty terms, and product descriptions on this page are accurate as of the date published. However, specifications, availability, and pricing are subject to change without notice. Big 3 Engine reserves the right to update information at any time.
Always confirm current pricing, availability, and specifications before placing an order.
VIN verification is required before ordering to confirm engine family, transmission compatibility, and proposed configuration. Fitment is not guaranteed without VIN verification. Incorrect fitment may result in installation issues or warranty complications.
Provide your complete VIN when requesting a quote to ensure accuracy.
Warranty coverage is governed by the controlling terms on the warranty page. Big 3 Engine is not liable for:
If you have questions about fitment, specifications, warranty coverage, or any other aspect of your build, contact Big 3 Engine before ordering:
Call 903-262-9502Contact our team today to discuss your engine needs, get a quote, or arrange installation.
2014 and newer GM trucks & SUVs
Shopping for a 5.3L or 6.2L replacement? These LT-family pages compare actual product options. Model years change at different times across pickups and SUVs. A Denali badge, shared displacement or similar photograph does not establish interchange. Confirm the VIN, engine code and original configuration first.
These are family-selection links, not a fitment list for every vehicle on this page. Older LS-family engines, HD trucks, diesels and specialty configurations need their own identification.
Send the VIN, transmission code or identification-label photo, engine details and 2WD/4WD configuration. Confirm the supplied converter, controls, programming, cooling-system work and installation scope in the quote. Engine displacement alone is not enough to select a transmission.
Compare the exact assembly price with installation, transferred accessories, required repairs and delivery. Core deposits are individually quoted and collected separately. Multiple engines, transmissions or mixed freight items require a shipping quote.
Engines • Transmissions • Installation
Built in East Texas. Shipped nationwide.
Engines • Transmissions • Installation
Shop L86 6.2L replacement, rebuilt, remanufactured and performance engines for Silverado, Sierra, Yukon and Escalade applications. Nationwide freight and Texas installation available.
The L86 is a 6.2L Gen V LT engine used in premium GM trucks and SUVs including Silverado, Sierra, Yukon, and Escalade. Exact vehicle application and proposed configuration are confirmed by VIN before ordering.
Big 3 offers recycled, customer-core rebuilt, standard rebuilt, enhanced, premium new-component, new long-block, and performance options. Availability and exact configuration must be confirmed. All long blocks exclude tinware.
Stock-type availability is confirmed separately. Allow eight weeks for Shock Factor and stock-displacement Atlas performance builds, or fourteen weeks for RaceKing, stroker and bespoke builds. Freight transit is additional. Core charges vary by source and configuration and are individually quoted and collected separately. VIN verification is required before sale.
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.
Our complete long-block assemblies include the engine block, crankshaft, pistons, rods, cylinder heads, camshaft, and valve train. Long-block excludes tinware (intake manifold, valve covers, timing cover, oil pan, alternator, water pump).
Port and chamber work is selected for the ordered combination; scope depends on the quoted cylinder-head package.
The L86 6.2L Gen V LT engine is factory-installed in premium GM trucks and SUVs. Exact fitment depends on model year, transmission, and vehicle configuration. VIN verification is required before ordering to confirm your engine family and ensure the proposed configuration matches your application.
Before ordering, provide your vehicle's VIN so we can verify:
VIN; RPO code; exact engine code and generation; control strategy and calibration; transmission; oil pan, covers, tinware and accessory configuration; direct-injection hardware; AFM/DFM configuration; emissions equipment.
Year and model alone are not enough, and another LT-family engine is not automatically interchangeable with an L86.
Choose the right stock replacement tier based on your budget, warranty needs, and performance expectations. All tiers include VIN verification and are made to order.
Compare current catalog prices, component descriptions and product-specific warranties in the engine cards below. Core charges are individually quoted and collected separately.
Pick your engine. Review exactly what comes with it.
Choose recycled, a rebuild of your own core, or a replacement long block with the component level you want. Each option below links directly to its engine listing.
Actual shop engine shown with attached components. Covers, coils, accessories and other transferred parts are not included unless specified in your selected listing or quote.
Prices and product photographs below come from the linked catalog listings. Prices are rounded to whole dollars here; the product page and checkout show the exact amount. Product prices exclude installation, tax, freight and separately quoted core charges unless the selected offer expressly includes them. Confirm VIN, availability and the written build scope before ordering.
Loading current L86 offers...
Help me choose my L86 engineEach performance tier is built to order with specific cam, fuel system, and tuning configurations. All performance builds include one-year parts-only warranty with no core charge. Big 3's engine program is supported by ETI Performance LLC for machining and Katech for specialized cylinder-head porting using Rottler CNC equipment.
Choose the combination for your goal.
Compare the cam and valvetrain package, rotating assembly and cylinder-head work in each build below. Open the exact product to review its specification and ordering options.
Actual shop assembly shown. This photo illustrates our work; the selected product specification determines included components.
$6,984
Warranty: One-year parts-only, no core
Stock remanufactured bottom end; stock-style heads; GPI cam/spring option or BTR through SS4 NFC; 1209X springs; Manley valves; Morel link-bar lifters with guide delete; Cometic head gaskets; Fel-Pro head bolts; CHE trunnion-upgraded rockers; BTR chromoly pushrods; heads may be cut .040 where required.
Use Case:
Cammed naturally aspirated — RK1
$8,859
Warranty: One-year parts-only, no core
RK1 plus BTR/GPI forged drop-in pistons and rods and ARP head studs.
Use Case:
Entry boost — RK2
$9,984
Warranty: One-year parts-only, no core
RK2 plus bottom-end studs and high-boost head-gasket setup.
Use Case:
Higher-demand boost — RK3
$12,777
Warranty: One-year parts-only, no core
RK1-style package plus Raceking-ported heads; Katech/Rottler CNC porting where specified; CHE guides; intake/exhaust-port and chamber finishing; Manley valves; 1209X springs; titanium retainers; chromoly seats; ARP studs. A related configuration has been used in Big 3's Camaro/show car; that is not a performance guarantee.
Use Case:
High-RPM naturally aspirated — Shock Factor 737
$12,875
Warranty: One-year parts-only, no core
Prior Shock Factor-style configuration using Silvolite rather than GM Performance pistons.
Use Case:
High-RPM naturally aspirated — Atlas
$13,637
Warranty: One-year parts-only, no core
Adds ARP rod bolts.
Use Case:
High-RPM naturally aspirated — Atlas 2
$13,905
Warranty: One-year parts-only, no core
Adds bottom-end studs.
Use Case:
High-RPM naturally aspirated — Atlas Bottom-End Stud Package
$14,766
Warranty: One-year parts-only, no core
Adds GM forged crankshaft and forged drop-in pistons/rods; N/A or boost trim as specified.
Use Case:
High-RPM naturally aspirated — Atlas 2 Forged
$17,389
Warranty: One-year parts-only, no core
416 stroker, sleeved block, BTR/GPI/CP-Carrillo/Scat components depending on quote.
Use Case:
416 stroker — Captain Bligh
$17,876
Warranty: One-year parts-only, no core
Captain Bligh 416 package with COMP shaft rockers instead of CHE trunnion rockers.
Use Case:
416 stroker — Tony Montana
$21,475
Warranty: One-year parts-only, no core
Designed for complete-system combinations targeting up to approximately 1,500 hp; final capability depends on fuel, airflow, calibration, installation and operating conditions and is not a guaranteed output.
Use Case:
Bespoke 6.6L complete-system build — Grudge Boss
AFM-specific hardware is deleted. A GM Performance L8T 6.6L camshaft is used where specified on stock-oriented combinations; performance packages may use BTR, GPI or custom camshafts. ECU tuning is required. The exact parts and calibration depend on the quoted build. This does not mean every factory failure point is eliminated.
Standard and performance cam selections available:
Budget take-out
Recycled
Customer-core restoration
Customer-Core Rebuild
Warranty-focused stock replacement
Standard, Enhanced or Premium depending on component and labor-coverage preference
Cammed naturally aspirated
RK1
Entry boost
RK2
Higher-demand boost
RK3
High-RPM naturally aspirated
Shock Factor 737 or the appropriate Atlas configuration
416 stroker
Captain Bligh or Tony Montana
Bespoke 6.6L complete-system build
Grudge Boss after vehicle, fuel, air, calibration and installation review
Big 3 requires VIN verification before sale to confirm the engine family and proposed configuration for the customer's application.
Nationwide engine freight and vehicle transport are available. Local installation is appointment-only in Troup, Texas.
Core charges are individually quoted and collected separately. Core-return requirements are confirmed with the order.
Stock-type availability is confirmed separately. Performance planning windows are 8 weeks for Shock Factor and stock-displacement Atlas; 14 weeks for RaceKing, stroker and bespoke builds. Freight transit is additional.
Installed starting at $8,949 including:
Appointment-only. Warranty coverage governed by controlling terms.
We offer nationwide services:
Warranty varies by product and controlling terms are on the existing warranty page. Standard rebuilt includes 4-year/100,000-mile parts-only coverage with no labor, towing or shipping. Performance builds are one-year parts-only with no core charge.
View Complete Warranty DetailsAll pricing, specifications, warranty terms, and product descriptions on this page are accurate as of the date published. However, specifications, availability, and pricing are subject to change without notice. Big 3 Engine reserves the right to update information at any time.
Always confirm current pricing, availability, and specifications before placing an order.
VIN verification is required before ordering to confirm engine family, transmission compatibility, and proposed configuration. Fitment is not guaranteed without VIN verification. Incorrect fitment may result in installation issues or warranty complications.
Provide your complete VIN when requesting a quote to ensure accuracy.
Warranty coverage is governed by the controlling terms on the warranty page. Big 3 Engine is not liable for:
If you have questions about fitment, specifications, warranty coverage, or any other aspect of your build, contact Big 3 Engine before ordering:
Call 903-262-9502Contact our team today to discuss your engine needs, get a quote, or arrange installation.
2014 and newer GM trucks & SUVs
Shopping for a 5.3L or 6.2L replacement? These LT-family pages compare actual product options. Model years change at different times across pickups and SUVs. A Denali badge, shared displacement or similar photograph does not establish interchange. Confirm the VIN, engine code and original configuration first.
These are family-selection links, not a fitment list for every vehicle on this page. Older LS-family engines, HD trucks, diesels and specialty configurations need their own identification.
Send the VIN, transmission code or identification-label photo, engine details and 2WD/4WD configuration. Confirm the supplied converter, controls, programming, cooling-system work and installation scope in the quote. Engine displacement alone is not enough to select a transmission.
Compare the exact assembly price with installation, transferred accessories, required repairs and delivery. Core deposits are individually quoted and collected separately. Multiple engines, transmissions or mixed freight items require a shipping quote.