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Complete Engine Assembly
This usually takes 5-15 seconds. We're pulling together fitment data,
OEM numbers, and community knowledge...
Dusting off the service manual...
đź’ˇ This page improves over time as the community adds casting photos and confirms fitment
Wiki page
5.7L V8 Naturally Aspirated LS1 (350hp). Service part 12561706.
Quick reference
F-body LS1 engines require comprehensive accessory and oil pan swaps for Corvette fitment - not plug-and-play
2001+ model year engines have updated camshaft (GM Part 12561725) and LS6 intake; verify ECU compatibility for 1997-2000 receivers
Z06 LS6 engines (2001-2004) share block architecture but are not direct interchange due to sodium-filled exhaust valves and 10.5:1 compression
Context
When sourcing a complete engine assembly for your 2002 Chevrolet Corvette C5, target service part number 12561706 or verify block casting 12558982. This 5.7L Gen III LS1 interchange spans 1997-2004 base model Corvettes and 1998-2002 F-bodies, though Camaro/Firebird cores require swapping the oil pan, windage tray, and intake manifold to fit the Corvette chassis. Inspection points include checking cylinder walls for piston slap wear (common in high-mileage examples) and verifying the valve springs haven't weakened, which causes float above 6,000 RPM. If pulling from a 2001-2004 donor, note these years received the superior LS6 intake manifold (casting 12561184), offering a bolt-on horsepower gain. Avoid Z06 donors—their LS6 engine uses different heads and compression ratios requiring ECU recalibration. Always match the 8th VIN digit "G" for proper LS1 identification.
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Confirmed fitment
| Year | Make | Model | Engine | Confidence |
|---|---|---|---|---|
| 2002 | Chevrolet | Corvette | 5.7L V8 Naturally Aspirated LS1 (350hp) | 80% |
Available parts
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Sign in to contributeCylinder head casting numbers 241 (1997-2000) vs 706/862 (2001+) indicate different combustion chambers; verify head casting when mixing components
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