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#1 |
US Army Veteran
![]() Join Date: Nov 2008
Location: Central Texas
Posts: 1,049
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Blower Motor and Squirrel Cage
Planning on doing some upgrades this spring (more like next month, here in West/Central Texas!). Spent several hours going through forum posts via google search and while there are number of related posts, I couldn't find concrete information to validate questions.
Blower Motor Heater only blower motor - no vent tube AC blower motor - has rubber vent tube Question: I've come across a number of threads recommending using a mid-late 80s blower motor for more speed/air flow. Has anyone actually done this or have recommendations? I had it cooling good two summers ago, at the evaporator core, but could never get good air flow (have cleaned out entire system of debris). High speed would yield an airflow barely on par with a modern system on lowest speed. Squirrel Cage - Blower Motor Wheel This is where I'm struggling for information. Question: Is there a difference in the blower motor wheel from Heater only vs AC? When I pulled mine, a few years ago, it had a plastic wheel that had stripped out such that wheel didn't spin and made a high pitch squeal. I don't recall how, but I managed to convince myself that a metal wheel was in order. I took measurements and did research and found a wheel online. After it arrived, determined it would not mount correctly, so I did some fab work on it to make it fit. Tonight, I came across this post (scroll towards bottom to see screen shot). Lists a metal wheel. Question: Is there a difference, performance wise or other, between a metal wheel and a plastic wheel and can anyone provide part numbers to order? Want to start getting my parts ordered so that when it warms up a little, I can knock everything out in a few days and be ready for the unbearable heat. Appreciate any advice! Fan/Blower Motor Relay When I did most of my upgrades a few years ago, I installed a new blower motor relay (behind the glove box). It lasted all of a year, before it went out last summer. No high speed again. Question: Is it possible to bypass that relay and use a more modern relay solution? For example, something similar to the wiring harness relay for lights? If so, does any have a write up on doing that?
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1972 C10 Highlander - The making of a daily driver |
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#2 |
Registered User
![]() Join Date: Nov 2007
Location: Vernon, Texas
Posts: 331
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Re: Blower Motor and Squirrel Cage
I tried using the early 90's blower motor and it wouldn't fit. The squirrel cage was too deep and the blower motor shaft wouldn't accept the old squirrel cage due to shaft length.
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#3 |
US Army Veteran
![]() Join Date: Nov 2008
Location: Central Texas
Posts: 1,049
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Re: Blower Motor and Squirrel Cage
Thank you, Kyle.
My wife's family is from Vernon. Appreciate the feedback!
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1972 C10 Highlander - The making of a daily driver |
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#4 | |
The Older Generation
![]() ![]() ![]() Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,487
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Re: Blower Motor and Squirrel Cage
Quote:
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Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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#5 |
US Army Veteran
![]() Join Date: Nov 2008
Location: Central Texas
Posts: 1,049
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Re: Blower Motor and Squirrel Cage
Excellent information, Leon! Your advice is very much appreciated!
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1972 C10 Highlander - The making of a daily driver |
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#6 |
Registered User
![]() Join Date: Jun 2014
Location: Houston, Texas
Posts: 722
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Re: Blower Motor and Squirrel Cage
I bought a new blower motor and metal fan from classicparts.com
It was cheap and blows awesome!!
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1972 Chevrolet C20 Cheyenne Custom Camper LWB - 350 / 330 HP GM Crate - TH350 / Mild Shift Kit - Dark Blue / Medium Blue - Paint Code 559 |
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#7 |
Senior Member
![]() Join Date: May 2010
Location: Wisconsin & Arizona
Posts: 4,844
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Re: Blower Motor and Squirrel Cage
Here are links to two recent discussions. One deals with blower motors. The other deals with squirrel cages. Don't know if you saw them.
http://67-72chevytrucks.com/vboard/s...d.php?t=643469 http://67-72chevytrucks.com/vboard/s...d.php?t=642884 My 69 with A/C came new with a metal cage as I noted in one of the above linked threads. If you look up blower motors for your truck on Rock Auto's website then click on the part number, you'll get a list of all the vehicles the motor will fit. For example, they say the motor they sell will fit 1955-1990 "Chevrolets" but only 1964-1987 GMCs. Based on that, I'd guess it may only fit 1962-1987 Chevrolet trucks but also other years in other Chevy models. This seems to substantiate comments made by other posters. The motor they sell has the ventilation hole. If you don't have A/C you would likely want to plug the hole. |
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blower motor, blower wheel, squirrel cage |
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