Chevrolet Chevy II 1967 3.2L 3180CC 194Cu. l6 GAS OHV Naturally Aspirated. Chevrolet Chevy II 1967 4.1L 4097CC 250Cu. Chevrolet Chevy II 1967 4.1L 4098CC 250Cu. The fan shroud basically houses the fan blades securing it in place and keeping it from damaging the other engine components that may disturb the smooth and even operation of the engine.