1967 GMC G15/G1500 Van Engine: 4.6L V8; Position: Carburetor To Governor;. Part Type: Carburetor Mounting Gasket. 1969 GMC G15/G1500 Van Engine: 5.0L V8; Position: Carburetor To Governor;. 1968 GMC G15/G1500 Van Engine: 5.0L V8; Position: Carburetor To Governor;.