440 fan

[charger01]

Maybe a silly question, but I want to run it by everyone anyways.  My 69 440hp currently has a standard 4 blade fan on it.  It has been running a little hotter than I like during these hot summer days and was considering a fan swap.  I have two clutch fans sitting around.  1 with 7 blades and 1 with 6.  Will these fans cool better than the stock 4 blade no clutch fan, and if so, what is the advantage/disadvantage of a 6 blade compared to 7?  any idea what I should go with?  Side note, guys that run clutch fans are you still running the fan spacer?

[Cooter]

One thing to remember when running clutch fans is to replace the old fan clutch! For whatever reason, I didn't and blamed the shroud, fan,water pump, etc. ...One day I was trying everything under the sun and decided to replace the fan clutch..BOOM, no more heating problems.

With that said, I like the clutch fans due to the extra HP and they do seem to cool better with a shroud than a mech. fan.

[charger01]

I see what your saying, my clutch seems fine, but will probably buy a new one just to make sure.

[71bee]

had the same problem with my 383 last year. switched out my MoPar Performance 5 blade for a 7 blade. it helped a little.