2002 Pontiac Trans Am 5.7L LS1 Engine – Complete Aluminum V8 & 4L60E Transmission Package
For custom car creators, restomod professionals, and pro-touring muscle car builders, selecting a complete 2002 Pontiac Trans Am 5.7L LS1 Engine package provides an exceptional combination of lightweight all-aluminum architecture, legendary small-block power, and highly reliable street performance. Sourced directly from an operational final-year 2002 Pontiac Trans Am showing only 64,000 verified original miles, this comprehensive powertrain features the high-performance Gen III small-block engine natively paired alongside its original heavy-duty 4L60E four-speed electronic automatic transmission. Choosing a complete standalone 2002 Pontiac Trans Am 5.7L LS1 Engine pullout assembly streamlines your vehicle conversion project, delivering the entire mechanical block and matching support components together to eliminate the immense hidden costs of tracking down individual brackets, hardware bolts, and compatible vehicle accessories separately.https://perlicanparts.org/auto-parts-store-about/
Pulled from a 2002 Pontiac Trans Am with only 64,000 miles, this complete 5.7L LS1 engine and 4L60E 4-speed automatic transmission combo is an excellent choice for LS swaps, performance upgrades, or OEM replacements. The package comes complete from intake to oil pan and includes all major components for a smooth and straightforward installation.
Listing Includes:
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Complete 5.7L LS1 346ci Engine (Intake to Oil Pan)
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4L60E 4-Speed Automatic Transmission
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Complete Front Accessories with Brackets and Bolts
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Starter
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All Engine Sensors
This LS1 engine and 4L60E transmission pullout offers a ready-to-install GM powertrain package—perfect for anyone looking to restore, upgrade, or complete a custom LS swap project.
Technical Specifications of the Final-Year F-Body LS1 346ci Power Plant
When planning an upgrade or performance swap centered around a 2002 Pontiac Trans Am 5.7L LS1 Engine for a classic car retrofit or an OEM vehicle replacement, tracking precise mechanical factory specifications is critical for managing fuel delivery lines and physical engine bay clearances.
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Engine Core Construction: Lightweight cast-aluminum cylinder block equipped with high-flowing aluminum cylinder heads (Gen III LS architecture)
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Internal Cast Layout: High-strength structural 346-cubic-inch design featuring durable cross-bolted main bearing caps
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Transmission Integration: 4L60E heavy-duty 4-speed electronic automatic transmission configured for rear-wheel-drive sports car applications
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Throttle Control Layout: Reliable mechanical cable-driven throttle body assembly for crisp, direct throttle feedback
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Factory Performance Ratings: 310 to 325 Horsepower and 340 to 350 lb-ft of Torque
To cross-reference specific block casting marks, internal oiling routing schematics, or cylinder head airflow charts for high-performance General Motors Gen III sports car engine architectures, you can check out the comprehensive public databases on LSX Magazine and Tech Reference Indexes.
What is Included in This Complete Drivetrain Turn-Key Package?
This 2002 Pontiac Trans Am 5.7L LS1 Engine pullout assembly is delivered as an ultra-complete mechanical package, preserving the critical factory components and belt-driven assemblies that typical salvage yards slice through or damage during hasty extraction.
Electronic Sensors, Loom, & Control Architecture
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Complete set of all vital factory engine sensors pre-installed (including crank, cam, MAP, and oil pressure sensors).
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Original matching engine ignition sub-assemblies and individual coil pack clusters.
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Dual individual coil pack sub-assemblies mounted securely to the original perimeter-bolt valve covers.
Mechanical Core Components & Belt Drive Line
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Complete factory composite intake manifold assembly, fuel rails, fuel injectors, and manual cable throttle body.
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Aluminum cylinder heads with complete internal overhead valvetrain, factory camshaft, heavy-duty timing chain, and rugged timing cover.
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Full front accessory drive array complete with all factory structural brackets, hardware bolts, alternator, power steering pump, and water pump.
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High-torque starter motor, factory air conditioning compressor, and original engine exhaust manifolds.
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Full internal assembly from the top intake plenum down to the factory low-profile F-body aluminum structural oil pan.
Why the 2002 Final-Year F-Body LS1 Beats Earlier Engine Variants
Performance enthusiasts and pro-touring hot-rod shops actively prioritize finding a genuine 2002 Pontiac Trans Am 5.7L LS1 Engine over earlier 1998–2000 models because it represents the highest technical evolution of the Gen III F-body design. Because this is a final-production-year block, General Motors equipped this specific engine layout with the highly sought-after high-flow intake manifold natively found on the Corvette LS6, along with a revised factory camshaft configuration and improved engine block casting molds that optimize internal oil gallery pressures.
Additionally, because the 2002 Pontiac Trans Am 5.7L LS1 Engine in this package is mated to a low-mileage 4L60E electronic automatic transmission, it offers a remarkably smooth and highly dependable driving experience. Weighing roughly 100 pounds less than standard cast-iron V8 blocks, this all-aluminum package maximizes front-to-rear vehicle weight balance when retrofitted into classic muscle cars, sports cars, or lightweight project trucks. It serves as an exceptional baseline for mild performance modifications, head and intake swaps, or custom tuning.
Freight Shipping Logistics and Universal Drivetrain Compatibility
This universal 2002 Pontiac Trans Am 5.7L LS1 Engine drivetrain package serves as a direct factory replacement for 1998–2002 Pontiac Trans Am and Chevrolet Camaro Z28/SS models, and stands as an exceptional custom engine swap foundation for vintage muscle cars, pro-touring machines, or custom street rods.
We anchor this entire heavy-duty V8 package onto an industrial wooden shipping pallet, wrapping the aluminum block, intake assembly, and automatic transmission in protective industrial shrink-wrap to isolate components from road vibrations during freight transit. All motor oils, transmission fluids, and cooling system residues are completely extracted prior to shipment to fully comply with nationwide highway freight transport protocols. To explore complementary conversion gear or alternative mounting setups, make sure to browse our General LS Engine Swaps Inventory or check out our catalog of Tested Automatic Transmissions to match this setup to alternative torque converters or gear layouts.
Frequently Asked Questions (FAQs)
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Can I use standard 87 pump gas with this F-body engine? While the factory computer network can adjust ignition parameters to prevent engine knock, using premium 91+ octane fuel is highly recommended to extract the full performance and efficiency from this all-aluminum platform.
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What is required to make this setup standalone for a classic car swap? For vintage vehicle integration, you will need a standalone wiring harness adapter and a professional software reflash to disable the factory VATS (Vehicle Anti-Theft System) security protocol inside the ECU.
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Was the 4L60E automatic transmission fully tested? Absolutely. Given the exceptionally low 64,000 mileage profile, this transmission underwent full input shaft rotation and functional internal checkouts, confirming tight planetary gear tolerances, clean valve fluid paths, and solid gear engagement prior to extraction.
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Where can I buy a reliable 2002 Pontiac Trans Am 5.7L LS1 Engine package online? Our fully certified, compression-tested engine pullouts provide professional car and truck builders with an honest, completely documented, and dependable performance foundation.
Disclaimer: This pre-owned automotive powertrain package is sold intended for professional vehicle restoration, OEM replacement, or private custom engine swap applications. Professional installation, fresh fluid lines, and complete electronic calibrations are highly recommended to maximize field safety and component durability.
