Mast Motorsports Ls3 L99 Track Packages Ls3 Cylinder Heads
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From underneath the Mast Motorsports L92/L99/LS3 cylinder heads you can see exactly how nice of a job they do on the CNC machine. These 12-degree rectangular-port heads move the valves away from the cylinder walls, effectively unshrouding them and promoting better airflow. That flow equals power, which is what we were after. View Related Article
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