1966 wiper motor swap - Impala Tech
Electrical & Wiring Troubleshooting electrical problems

LinkBack Thread Tools
post #1 of 4 (permalink) Old 04-27-2014, 09:55 PM Thread Starter
Join Date: Apr 2011
Location: Evergreen, AL
Posts: 58
1966 wiper motor swap

Turns out my wiper motor is dead. Also turns out I am dirt pior.

I see wiper motors and refurbish services for $250-400. I see a 1968 motor online for $50ish. I cannot seem to spot a difference. The guts, wiring, plastic gear, shape, 3 terminal, etc
, all look like a 66. There must be some difference, anyone mind tellinf me why a 68 motor won't fit 66 impala?
trickyspark is offline  
Sponsored Links
post #2 of 4 (permalink) Old 04-28-2014, 08:52 AM
Join Date: Jan 2006
Posts: 12,381
Difference will be in less wear and tear and the build date. Otherwise GM used basically two different wiper motors for decades the round motor and the square motor. They are interchangeable and all bolt up using the same three screws to bolt the motor to the fire wall.

Because of differences in windshields the arm that bolts to the motor differs but it is held in place by only one nut and all use the same size shaft (there is a difference in the threads on the motor's drive shaft on newer cars as they went Metric in the early eighties, but you can reuse the metric nut).

If it has pulse wiping function as an option you will not be able to access those features, as your switch is basically an on-off arrangement with the possibility of two speeds.

Big Dave

Last edited by Big Dave; 04-29-2014 at 09:15 AM. Reason: To many fingers on key board at once, I use one typing finger
Big Dave is offline  
post #3 of 4 (permalink) Old 04-29-2014, 07:06 AM
Senior Member
Join Date: Sep 2008
Location: Fort Worth Texas
Posts: 1,273
You can probably buy one at autozone or oreilys for a lot less money.
Txbobcat is offline  
post #4 of 4 (permalink) Old 05-08-2014, 01:36 PM Thread Starter
Join Date: Apr 2011
Location: Evergreen, AL
Posts: 58
Parts stores don't have the 66 motor .

I bought the 68 motor. It bolted up perfectly, the 66 washer pump fit it. The electrical connections all plugged up perfect. Turned it on, works perfectly. The only difference, the nut from my 66 wouldnt fit, but the 68 came with one.

I turned in the 66 motor as a core, total cost was around $57.

Just an update for anyone with a 65,66,67 in need of a wiper motor and not able to pay hundreds.
trickyspark is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Impala Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome