Any experience with belts squealing? - Pontiac GTO Forum
User Tag List

LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old 04-09-2011, 08:05 PM Thread Starter
Join Date: Dec 2009
Location: Rushville, IN
Posts: 25
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Any experience with belts squealing?

I have a '66 gto non AC with a 1971 400. Before I had a bigger cam installed, the belts didn't squeal. Now, when you punch it, or get up to so many rpms going down the highway, they squeal obnoxiously. I've taken it to several mechanics, adjusted tension, sprayed belts with anti squeal crap, aligned, all without any luck. I've been told by a mechanic that the bigger cam has too much torque, and is causing the belts to slip. I was wondering if anybody had any ideas or experience with gator belts helping, or if I should upgrade to a March performance serpintine system? Ofcoarse the less money I would have to dump into her would be great. Thanks in advance for your comments.
nmiller5000 is offline  
Sponsored Links
post #2 of 6 (permalink) Old 04-09-2011, 09:10 PM
nyte_ryder67's Avatar
Join Date: Feb 2011
Location: central Kentucky
Posts: 43
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
My belts squeel also, been told because that they are old. I have sprayrd them with belt-dressing but it only helps for a little while.
nyte_ryder67 is offline  
post #3 of 6 (permalink) Old 04-09-2011, 09:18 PM
67 Basket Case Restorer
Too Many Projects's Avatar
Join Date: Nov 2008
Location: Stillwater, MN
Posts: 2,717
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Once the belts have slipped and glazed, NOTHING you do will stop it. Get new, high quality belts and sand the pulleys with some 180 grit paper to remove the glaze on them. With proper tension, they shouldn't squeal.

1967 GTO; Gulf Turquoise on Black, 4 speed, buckets SOLD
1967 Camaro ss/rs 350
1966 Chevelle SS 396
1966 Chevelle Malibu
1970 Chevelle SS 396
1962 Impala SS
1952 Chev 2 ton flat bed
1938 Chev coupe
Too Many Projects is offline  
post #4 of 6 (permalink) Old 04-09-2011, 09:27 PM
Join Date: Oct 2007
Location: Long Island NY
Posts: 4,702
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Like Mitch said...and ....check the pulleys for wear. If they are worn the "V" shape gets spread and the belts bottom out before the sides can grip...A march system is a real nice set up too......E

Eric Animal is offline  
post #5 of 6 (permalink) Old 04-10-2011, 07:54 AM
Super Moderator
GTO JUDGE's Avatar
Join Date: May 2005
Location: Lancaster, PA
Posts: 8,433
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
My pulleys were powder coated. I get a high pitched loud whistling and when the heat warms things up it stops or quiets.

Am told that in time the friction will wear the coating off. I can see the coating on the pulleys beginning to wear. In the meantime I occasionally spray Teflon spray on the pulleys to quiet them. It lasts for a while and the little spray that comes off is easily wiped off where as belt dressing can be a bitch. I have not experienced any belt slippage. I am still in the wait and see mode, if it don't stop soon I wil try the 0000 steel wool or really fine sand paper.

President: GTO Association of America

GTO JUDGE is offline  
post #6 of 6 (permalink) Old 04-10-2011, 11:53 AM
Join Date: Feb 2009
Location: Novato, Cali
Posts: 336
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I had a problem once with a belt squeal. From Napa I got a reman altenator. It came with a new gold anodized pulley. The pulley was the same dia and v-grove pitch. I put that on with a new belt, and it would squeel like hell. I pulled the original pulley off my old altenator put it on the reman alt and the squeeling went away. When I put on a new belt, I get them real tight. Drive it around for about 200 miles to stretch. Then I loosen the belt to proper spec. Once a belt sqeels throw it away, it is junk or live with the squeel.
dimitri is offline  
Sponsored Links

  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO General Discussion

Quick Reply

Register Now

In order to be able to post messages on the Pontiac GTO Forum 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:


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
U/D Pulley Belts KroBeast13 2004-2006 GTO General Discussion 0 04-06-2011 06:01 AM
Belts problems GuatoLT1 2004-2006 GTO General Discussion 5 01-03-2011 08:53 PM
Squealing and Rattling noise 2004bluegto 2004-2006 GTO General Discussion 6 12-20-2010 07:51 PM
'67 GTO belts... PisnNapalm 1964-1974 Tempest, LeMans & GTO Technical and Electrical Wiring 1 10-25-2010 10:50 PM
Underhood squealing danekejt Service, Maintenance and Technical Discussion 9 08-13-2009 06:55 AM

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