Data Point
Last winter I had to replace my aluminum radiator. Went
With a ColdCase with two rows of 1.25 tubes. Noticed my
Fan clutch had some wobble and installed original 5 blade
Power flex mechanical fan. Used a 160 superstat I had as
A spare to see how cool she would run. Well she stays at
165 around town and hits 170 on freeway after a few miles.
Once off freeway she goes back to 165! Well I admit the factory
fan has some noise only when getting up to highway speeds but
Quiets down right after. Like the blades flatten once up to speed.
Not planning on reinstalling fanclutch just yet, it’s garage art.
Glad I hung the factory fine on the wall years ago.
I will say the Hayden clutch and 7 blade fan helped immeknsely
When I had original 3 core radiator.
Gerry.
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1968 Firebird 400, 068 cam, TH400 & 13" Continental Converter, Auburn posi with 3:08 factory gears, Cliff's Q-jet resting on a 68 factory iron intake, DUI HEI and Ram Air pans and RARE Long Branch Manifolds
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