81 Blower Motor
Le Mans Master
Joined: Aug 2000
Posts: 9,662
Likes: 7
From: Semper ubi, sub ubi
Cruise-In VI Veteran
Cruise-In VII Veteran
Re: 81 Blower Motor (Ben Taylor)
Ben,
You can get a new motor, but first check and see if it is actually running a full speed. I think you'll also find out that the a great deal of the lack of air volume is caused by 21 years worth of leaves and other crud inside your evaporator and heater core case. There are a number of other things that cut down on air flow. C-3's are notorious for poorly fitting duct work, while you have the dash out for the core change, make sure you seal all the ducts. Adhesive foam weather stripping from a home improvement store works pretty good. Also tape around all the connections between the ducts with aluminum duct tape. (Not the gray duct tape, it will peel off, but real aluminum duct tape, also available from home improvement stores.)
If you find your blower is bad, then the best place to get a replacement is from the Chevy dealer.
You can get a new motor, but first check and see if it is actually running a full speed. I think you'll also find out that the a great deal of the lack of air volume is caused by 21 years worth of leaves and other crud inside your evaporator and heater core case. There are a number of other things that cut down on air flow. C-3's are notorious for poorly fitting duct work, while you have the dash out for the core change, make sure you seal all the ducts. Adhesive foam weather stripping from a home improvement store works pretty good. Also tape around all the connections between the ducts with aluminum duct tape. (Not the gray duct tape, it will peel off, but real aluminum duct tape, also available from home improvement stores.)
If you find your blower is bad, then the best place to get a replacement is from the Chevy dealer.
Safety Car
Joined: Mar 2000
Posts: 4,077
Likes: 27
From: Northeast South Dakota
Re: 81 Blower Motor (Ben Taylor)
Smokehouse69 said it all. I completely rebuilt my heater box and duct work and now the blower blows more than you can hardly stand on high. Like he said, there is a lot of material that needs to be cleaned out of the heater box, core, and evaporator.
Racer
Joined: Jan 2000
Posts: 491
Likes: 0
From: florida
Re: 81 Blower Motor (Smokehouse69)
Just redo all your seals while your in there. You will be surprised how much more air you will gett from a fresh blower motor. My air flow almost double when I replaced it
lou
lou
