Moroso 68050 Moroso Chevrolet Small Block (w/13 to 23 Degree Heads) Valve Cover - Billet AluminumMoroso 68050 Moroso Chevrolet Small Block (w 13 to 23 Degree Heads) Valve Cover Billet Aluminum Billet Aluminum Valve Covers, Sprint Car, Fits: SBC, 13 To 23 Cylinder Heads Fits: SBC, 13 To 23 Degree cylinder heads with the valves in the conventional location 2 3 4" Tall at the peak CNC machined from a billet aluminum bar Airtight sealing allows the engine to pull greater vacuum for improved ring seal and power Black anodized finish Designed for