Line Boring an LS Block: Why This Machine Work Matters for Performance Engine
When building a high-performance LS engine, precision machine work is critical. In this video we walk through the complete process of line boring an LS engine block, one of the most important machining operations for maximizing engine reliability, bearing life, and overall performance.
Follow along inside the shop as we show the entire procedure—from loading the block into the CNC machine and setting up precision measuring equipment, to cutting the main bores and ensuring perfect alignment throughout the crankshaft tunnel.
Properly machined main bores are essential for any serious engine build. Line boring corrects misalignment, restores proper geometry, and ensures the crankshaft runs true within the block. The result is improved oil clearance consistency, reduced bearing wear, and a stronger foundation for high horsepower applications.
In this video you'll see:
• Preparing and loading the LS engine block in our Rottler CNC
• Precision measurement and setup procedures
• The complete line boring machining process
• Why proper main bore alignment is critical for performance engines
• How professional machine work improves durability and reliability
Whether you're an engine builder, machinist, or performance enthusiast, this video shows the level of precision required to build engines that survive serious power.
For more performance engine builds and machine shop content visit:
https://boostlineperformance.com
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