My 360 fan is that way as well. They are noisy and cool well, move alot of air as long as the fan clutch doesn’t fail.
Flex fans came into vogue on motors without fan clutches, as the flex fans blades flex out straight under RPM, lessening the load on the motor at speed due to increased air flow through the radiator at speed.
"Who New? Blue"
1990 Chevy G30 454
Church Van, maternity division
1988 Dodge B250
'94 Dodge B350 www.xplorermotorhome.com/
Xplorer MH model 230 230 hp MPI 360 LA Wedgy OD auto
Old vans never really die if we chose to let them live