Looking for a blower motor (or a rebuild service), mine works but blows the fuse on Defrost sometimes.

My research is showing a P/N 20-3608 - Blower Motor for 1954-1957 Oldsmobiles and possibly Chevys and others.

https://www.oldairproducts.com/produ...8-blower-motor

 

Shoot me a message direct at dead@mchsi.com. Pretty sure Ive got either NOS or NORS.

 

I owned a bunch of 55-57 Chevies over the years. I found that a generic blower motor can work on the Chevy heater, by using the old Chevy fan, and maybe drilling a couple different holes. But back then, they would let me go in the back of the store and look through the boxes to get a close match.

 

One thing about it, it is easy to change. Good luck.

 

An alternate solution to tight heater fan motor.

If you have a drill the following procedure takes less than two hours and can be done at home

remove the motor from the car. Be careful of motor wires as the insulation is brittle. Heat shrink is a good repair for broken or missing insulation

test the feel of turning the blower wheel.

Remove the blower wheel and mounting plate from the motor

From the bottom side of the motor drill a 1/8 inch hole in the "lumps" on the front and rear of the motor. These "lumps" are the brass bushings that are dry of oil after all these many years

Add 8 to 10 drops of non detergent 20 weight engine oil to each "lump"

Use very short 1/8 set screws with a sealer to seal the holes drilled. may need a tap to make threads to start set screws.

Replace mounting plate and blower wheel

Apply power to motor for 30 seconds.

Test effort to turn blower wheel. Should be much less than initial test of turning blower wheel

Remount on car.

Enjoy
Ron