Seller notes

SB Chevy Aluminum Cylinder Head - AssembledWith Steam Holes for 400 & 406 EnginesFor use with Hydraulic Roller Cam Crafted from high-grade aluminum, bronze valve guides, hardened seats, and advanced port design for improved airflow. This head features a thicker deck design so they can be used on nitrous, turbocharged and supercharged applications.Dual valve cover bolt pattern, will accept either center bolt or perimeter bolt valve covers.Professionally assembled here in the USA, using premium pa...

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