12572808 - Production LQ9 / 6.0L Gen III Block - 3.98" Bore, 9.240" Deck, 2.56" Mains, 6 Bolt Main, Cast Iron Block
This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.
Gen III Cast iron block used in RPO LQ4 & LQ9 trucks, 1998-2006.The bore is 101.60mm or 4.0"Casting numbers: 12551364,12573581,12577184
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.
LQ9 Cast-Iron 6.0L Bare Block
Direct replacement for 1998-2004 LQ4 and LQ9 Truck and SUV 6.0L
Production cast-iron block
Production oiling system
6-bolt iron main bearing caps
9.240" deck height
Use only LS1, LS6, LS2 or L92/LS3-style cylinder heads
4.00" finished bore (101.6mm)
No provision for Active Fuel Management
Great for stroker cranks for even more cubes
Tested to over 500 horsepower!
- Item Requires Shipping
- 212.6 lbs.
- W24.0000” x H19.8000” x L27.8000”
- FREE 48 State Shipping
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