Check the listing for details. Comp Cams 744-16 7 Degree Valve Spring Retainers Set - Chevrolet BBC Ford BBF. Condition: New. Listed at 80.95 USD. Engine Bearings Camshafts Valvetrain Parts GM LS / LT Parts Hemi Parts Wheels Tires Cold Air Kits Comp Cams 744-16 7 Degree Valve Spring Retainers Set - Chevrolet BBC Ford BBF PN: 744-16 Outside Diameter of Outer Spring (in):1.400 in. Retainer Material:Steel Lock Style:7 degree Valve Spring Style:Standard Retainer Style:Standard Number of Springs Per Valve:Dual Outside Diameter of Middle Spring (in):1.060 in. Inside Diameter of Inner Spring (in):0.690 in. Locks Included:No Quantity:Sold as a set of 16. Notes:Will work with single or dual springs. Valve springs with larger diameters require retainers to handle the higher pressures developed by the springs. COMP Cams® Steel Retainers are the perfect solution to this problem. COMP® engineers used 3D CAD with FEA to design retainers with a modern and advanced contoured top profiling for lower stress, increased lift and a reduction in mass. The retainers are CNC-machined to exact tolerances using CAD/CAM software. All COMP® retainers use only high-grade SAE 4140 chromemoly steel with no lead,