7 blade fan good upgrade?

MrSony

MrSony

Geezer
Nov 15, 2014
5,553
113
Des Moines, Iowa
I've heard it talked about on here in good favor. My car, even with a new rad likes to creep up in temp at a stop. take off, it goes down again. the fan is an oddly sharp 5 blade i took off a 229 v6 at the junkyard with my 2 year old clutch on it.
 
olds307 and 403

olds307 and 403

Geezer
Oct 14, 2008
5,864
113
Melville,Saskatchewan
Get the 4 blade solid fan and adapter Briguy bought for his 403.
 
565bbchevy

565bbchevy

Geezer
Aug 8, 2011
7,442
113
Michigan
I bought this 6 blade clutch fan with aluminum blades along with a new thermal clutch for my Regal and it works very well.
 
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olds307 and 403

olds307 and 403

Geezer
Oct 14, 2008
5,864
113
Melville,Saskatchewan
w/killer results too
Second guy on the site with 403 in a G body to see a substantial drop with that 4 blade fan. I haven't seen over 195 even without a shroud in my 70 Cutlass.
 
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Longroof79

Longroof79

Rocket Powered Basset Hound
Oct 14, 2008
10,666
113
Gainesville, Fl
I've been using a 7-blade Monte SS clutch fan with good results. Prior to that, a 7-blade Hayden flex fan. Noisy, but it kept it cool.
 
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olds307 and 403

olds307 and 403

Geezer
Oct 14, 2008
5,864
113
Melville,Saskatchewan
I do have a 8 blade fan off the 5.9 Magnum in my Dakota. Looks like it will fit the 307 Clutch but might be backwards.
 
Turbolq4

Turbolq4

Royal Smart Person
Sep 25, 2017
1,625
113
Nampa Idaho
A fixed fan basically exes out any performance gain you may have realized by putting a 403 in your car to begin with.

Could put an auxiliary electric fan on the front. Use a heavy duty switch to control the relay and source the power from a circuit that's only on with the ignition so if you forget to turn it off then it won't matter.

Can keep a fan that has some concession to economy/performance and give it that little extra cooling capacity when needed without reverting to 1890s technology.
 
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MrSony

MrSony

Geezer
Nov 15, 2014
5,553
113
Des Moines, Iowa
As much as it cools, I am just not a fan of a solid fan.
 
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