I upgraded to electric fans this is 6 months old with 1500 miles on it practically new still. This will fit any SBC. Came off a 1963 Chevy C10 with a 350. This is rated for up to 9,000 Rpm. This fan has a 5/8 in. pilot with a 1.75 to 2.50 in. bolt pattern.
Derale Flex Fan Standard Spacers ›
Fan Spacer Kit, 2 1/4" long, NO BOLTS. This is hand polished.
Flex-A-Lite Flex fans spin better performance and fuel economy. How? Flex fans move considerably more air at idle—plus, the stainless steel blades flatten out at higher engine rpms to reduce engine drag. They're the standard for engine-driven cooling fans, combining good looks with high-efficiency. The fans feature Flex-A-Lite's innovative premium, high-tech silver coating which adds durability. The specially formulated coating won't degrade or lose its luster in the harsh environment of an engine compartment—and that means your fan will look great under the hood, regardless of the color of the engine or engine compartment.