COMPATIBILITYCompatible with (1955 - 1986) 265, 283, 302, 305, 327, 350, and 400 SB Chevy Engines. 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).Fits Most OEM & Aftermarket Cast Iron & Aluminum Intake Manifolds.. PREMIUMStainless steel allen socket head bolts more durable and corrosion resistant. It is easier to install Valve Covers to Cylinder Heads.. INTAKE MANIFOLD BOLT (8) 1/4" x 1 1/2" Studs (polished),(8) 1/4" Hex Locking Flange Nuts (polished).Meets or exceeds industry standard ASME / ANSI specifications..
