Stock Long Block

Features:

• Fits 2001–2004 6.6L Duramax LB7 engines
• Includes fully assembled stock long block
• Built with performance-grade pistons
• Keyed crankshaft and camshaft for durability
• Features new oil cooler and oil pump
• Includes new water pump for reliability
• Internally balanced crankshaft option available
• Equipped with stock cylinder heads
• Heads include unshrouded valves
• New steel valve guides for longevity
• Built to OEM specs for easy installation
• Ideal for stock or mildly upgraded applications

Bring Your LB7 Back To Life With Factory Fresh Confidence

If your 2001–2004 Duramax LB7 is due for a serious overhaul, the Industrial PDM-LB7STKLB Stock Long Block is the dependable foundation you’ve been looking for. This crate engine is built to factory specs and comes fully assembled with components selected to restore OEM performance while offering long-term reliability. It features performance pistons, a keyed crankshaft and camshaft, and all the vital internals needed to get your engine bay back in shape. Whether you’re replacing a tired powerplant or bringing a worn-out truck back from the brink, this long block makes the process smoother with quality components right out of the box. You’ll get a new oil cooler, new oil pump, and even a new water pump, no cutting corners here. The included stock cylinder heads are designed to breathe better with unshrouded valves and reinforced with new steel guides. For owners looking to maintain stock drivability with fresh internals and boosted confidence, this long block delivers serious value and peace of mind.

Engineered With Precision For Proven OEM Fit And Durability

The Industrial Injection PDM-LB7STKLB Stock Long Block is a meticulously assembled replacement engine designed for 2001–2004 GM 6.6L Duramax LB7 trucks. Built with performance-grade pistons and a keyed crankshaft and camshaft, this engine offers improved internal security over stock while retaining full emissions compliance and daily drivability. It comes with a new oil pump, oil cooler, and water pump already installed, eliminating the need to source and match components individually. Internally, it’s balanced for smooth operation, and an internally balanced crankshaft option is available for customers looking for added refinement. The cylinder heads are fully refreshed using OEM castings, but feature unshrouded valves for improved airflow and upgraded steel valve guides for enhanced longevity. Every element of this long block is aimed at delivering a drop-in-ready solution with zero surprises. It’s a direct-fit replacement built to support factory tuning, mild upgrades, and dependable day-to-day use. Perfect for restoring performance without diving into heavy modifications, this long block gives you a reliable path forward.

Fits: 2001, 2002, 2003, 2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Notes:

• Designed as a direct stock replacement for LB7 engines
• Long block includes assembled bottom end and cylinder heads
• Performance pistons used for added durability
• Keyed crankshaft and camshaft help prevent slippage
• New oil cooler, oil pump, and water pump included
• Heads are stock castings with unshrouded valves
• New steel valve guides installed for increased longevity
• Internally balanced crankshaft available upon request
• Ideal for stock rebuilds or mild performance applications
• Built to meet or exceed OEM specifications