SBC Valve Cover Stud Kit Bolts Stainless Steel 283 327 350 400 Small Block Chevy - Bolt kit for Installing Valve Covers to Cylinder Heads - Fitment: Fits (1955 - 1986) 265, 283, 302, 305, 327, 350, and 400 SB Chevrolet Engines; Fits Most OEM & Aftermarket Stamped Steel & Aluminum Perimeter Bolt Valve Covers; Will Not Fit: GEN II, III, IV, V Engines (TPI, LT1, Vortec 4.8 5.3 5.7 6.0 6.2L, LSX, LT5 Engines). - Specifications: Hardened 304 Stainless Steel; (8) 1/4" x 1 1/2" Studs (polished); (8) 1/4" Hex Locking Flange Nuts (polished).