*MUST READ*--Flex Fan Danger--Be very careful working on old cars

Local Ferds here used flex fans in late 70s/early 80s on 302/351 engines. They were known to lose blades...
In the mid 80s, they switched to a 8-10 blade clutch driven plastic fan, 18"diam. The centre section was steel & the plastic was moulded over the steel. They were very well made, strong, & pulled a LOT of air.