My '62s 355 runs about 190-200 all the time,goes up to 210-220 with extended idling,but doesn't seem to ever go past that. Stock radiator,clutch fan about 1-1/2 inches out from the shroud,50/50 antifreeze.
Speed

1954 GMC 350
1957 GMC 1/2 ton
1962 Chevy C-30
1952 Chevy 6400 dump bed project truck
'98 Harley FLSTC
'66 Pontiac Catalina
'76 Chevy 1 ton Duallie
'84 Bronco II
'78 Dodge W-200
'81 Toyota 4X4 truck