1931 Radiator Fan

(and other substitute years)

The proper fan blade for Chevrolet passenger cars in 1931 was a two bladed fan.

Most people replaced this with a four-bladed fan at some point in time.  The cooling improvement is very noticeable.
In later years, this 4-blade fan was the only replacement available from Chevrolet.

<click on photos to enlarge them>

 

SHAPE Usual Condition Restored Close-up
1
2 Bladed		 no photo
2
90deg Cross
3
 
YEAR MODEL

SHAPE

 CENTER PILOT HOLE BLADE LENGTH NUMBER OF BLADES
1929-31 Pass 1 1 1/18" 15 3/4" Two
1929-31 Pass 2 1 1/18" 15 3/4" Four (Replacement)
1929-31 Truck* 1 or 2 1 1/18" 15 3/4" Two or Four
1932 Pass 2     Four
1933-36 Pass 3 1 1/8" 15 3/4" Four
1933-36 Truck 3 1 1/8" 16 1/4" Four
1937-54 Pass 3 1"   Four
           


Notes:  * Early truck configuration is in doubt.  The 1931 Repair Manual on page 37 shows a two bladed fan (shape 1)  for 1931 LT trucks.  The 1932 Repair Manual shows a four-bladed fan (shape 2).  By the 1934 parts books, it lists the more modern four-bladed fan (shape 3).

  

Page last updated:  09/26/2009

 Index Accessories Booklet Viking Ash Tray Eagle Potter Trunk Heater Switch Heater Switch Repro Side Mounts Carbureter Dash Clocks Wind Wings Hot Water Heater Trico Mirror Rumble Seat 6 Volt Light Bulbs Brakes Window Regulators Jack & Tools Upholstery Fan Blade Decals Gas pedal