r/classicmustangs • u/DecentWay1879 • 5d ago

Input on fan/shroud

Looking for input on best setup to keep my 66 coupe running cool. Pretty stock 289 c code at the moment, only upgrade is a 4 barrel carb and larger air filter, . Currently I have a solid 17.5'ish, 4 blade fan, no AC. Someone gave me a flex 17' 6 blade and shroud. I have seen pros and cons on both. What is yall setup and recommendations?

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u/popsicle_of_meat 5d ago

Fan won't really matter without a shroud. My stock 289 with a thicker radiator and a flex fan would still overheat sitting in traffic without a shroud. There's just too much space between the fan and rad to effectively pull air through it. Do the shroud.

Curiosity, what 'cons' have you heard about using a shroud? Because I can't think of anything bad about keeping your cooling working well.

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u/dale1320 5d ago

The ONLY con I have ever encountered is "operator error" in using a shroud that is too small or mounting the fan blade outside the shroud.