ac heater fan
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Racer
Joined: Dec 2012
Posts: 487
Likes: 66
From: Rhode Island
ac heater fan
hi guys I have a 70 small block and purchase a new fan but I heard that other year cars have better and faster fan motors that work better.is it worth spending the extra money thanks the one I put in for the 70 just don't blow very good
Safety Car
Joined: Sep 2011
Posts: 4,118
Likes: 1,230
From: Madeira Beach, FL
2024 C8 of the Year Finalist - Unmodified
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Bobby,
Much to do has been written on this topic. I would disconnect the ground wire to the fan and run a thicker ground wire from the motor directly to real steel preferably the frame. See how this works first. If still not satisfied then you can purchase a 1985-86 C-4 blower motor assy complete. Later longer fan will not fit on your current motor assy. You will need to fabricate a 1" thick spacer out of wood or plastic to go between the longer fan blades and the firewall. Some have done this with less than positive reviews saying the improvement was mediocre.
Hope this helped.
Marshal
Much to do has been written on this topic. I would disconnect the ground wire to the fan and run a thicker ground wire from the motor directly to real steel preferably the frame. See how this works first. If still not satisfied then you can purchase a 1985-86 C-4 blower motor assy complete. Later longer fan will not fit on your current motor assy. You will need to fabricate a 1" thick spacer out of wood or plastic to go between the longer fan blades and the firewall. Some have done this with less than positive reviews saying the improvement was mediocre.
Hope this helped.
Marshal
Racer
Joined: Jan 2017
Posts: 496
Likes: 153
From: San Francisco Bay Area
Bobby,
Much to do has been written on this topic. I would disconnect the ground wire to the fan and run a thicker ground wire from the motor directly to real steel preferably the frame. See how this works first. If still not satisfied then you can purchase a 1985-86 C-4 blower motor assy complete. Later longer fan will not fit on your current motor assy. You will need to fabricate a 1" thick spacer out of wood or plastic to go between the longer fan blades and the firewall. Some have done this with less than positive reviews saying the improvement was mediocre.
Hope this helped.
Marshal
Much to do has been written on this topic. I would disconnect the ground wire to the fan and run a thicker ground wire from the motor directly to real steel preferably the frame. See how this works first. If still not satisfied then you can purchase a 1985-86 C-4 blower motor assy complete. Later longer fan will not fit on your current motor assy. You will need to fabricate a 1" thick spacer out of wood or plastic to go between the longer fan blades and the firewall. Some have done this with less than positive reviews saying the improvement was mediocre.
Hope this helped.
Marshal
