12561166 - Production LS1 / LS6 Gen III Block - 3.89" Bore, 9.240" Deck, 2.56" Mains, 6 Bolt Main, Aluminum Block
This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.
This aluminum block is used on the 2001 LS6 Corvette. Use with casting P/N 12561168.
The LS Series cylinder block is the foundation for the serious performance achievements that are driving a new generation of street and racing enthusiasts. Features include a deep-skirt casting (the block side extends below the crankshaft centerline); 6-bolt cross-bolted main caps, strong and lightweight aluminum alloy casting (most productioin blocks) and provisions for the latest in engine control management. The cam-in-block configuration brings inherent torque to every LS engine, with production-based blocks capable of supporting combinations of 500 horsepower or more. The corvette ZR1'sunique 6.2L block, for example, supports the engine's 638-horsepower rating. GM Performance Parts' high-performance inon LSX cylinder block supports more than 2000 forced-inductioni horses!
Whether you're building a mild street engine or an Outlaw racing engine, starting with a strong LS cylinder block brings the assurance that you'll amke the power you need with a durable foundation.
LS1/LS6 5.7L Bare Block
Direct replacement for 2001-2004 LS1 and LS6 Corvette 5.7L
Production 319-T5 aluminum block with iron sleeves
Production oiling system
6-bolt iron main bearing caps
9.240" deck height
Use LS1/LS6 cylinder heads only
3.89" finished bore (99.0mm)
No provision for Active Fuel Management
Tested to over 400 horsepower!
- Item Requires Shipping
- 150.0 lbs.
- W23.3000” x H19.5000” x L27.8000”
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