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 the intake manifold to the cylinder head when bolt clearance and accessibility are important.. INTAKE MANIFOLD BOLT Include (12) 3/8" x 1" Allen Socket Head Bolts (semi-polished), (12) 3/8" Mil-Spec AN Washers (polished). Accepts 5/16 allen key / allen socket for install.Meets or exceeds industry standard ASME / ANSI specifications..
