BMP 702455 - Chevy Big Block Stud Girdle (BMP/World Products 320/345 24 degree Aluminum Cylinder Heads)702455 Chevy Big Block Stud Girdle (BMP World Products 320 345 24 degree Aluminum Cylinder Heads) These CNC machined stud girdles help control valve lift and timing changes due to stud flex, allowing for more consistent high rpm performance. Each stud girdle is anodized and comes with high quality hardened adjusting nuts. Tall style valve covers are required. Keep your valvetrain located properly and stabilized with these lightweight aluminum, CNC
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