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[GMCnet] Engine Belt Part Numbers [message #246081]

Tue, 01 April 2014 17:10

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma: 6

Senior Member

G'day,

I read the information on Gene's website: http://gmcmotorhome.info/BELTS.html and it's hard to tell exactly what length belts we
need because the different manufacturers use different part numbering systems. Also the width of a belt will affect how high it
rides in the pulleys which will in turn affect the length required. Below I've listed the possible candidates from V-Belt
Supply.com.

http://www.vbeltsupply.com/ecommerce/automotive-cogged-v-belts?dir=asc&limit=100&order=name

Their part number system is: the first two digits are the width in thirty seconds of an inch and the last three are the length in
inches.

I have used the term "candidates" because I am not sure how high these belts will ride in the pulleys so I can't be sure which one
will fit.

For a 455 GMC there are the following belt candidates:

Air Conditioning:

http://www.vbeltsupply.com/ecommerce/15619.html = 15/32 wide / 61.9 inches long

http://www.vbeltsupply.com/ecommerce/15620.html = 15/32 wide / 62.0 inches long

http://www.vbeltsupply.com/ecommerce/15625.html = 15/32 wide / 62.5 inches long

http://www.vbeltsupply.com/ecommerce/15630.html = 15/32 wide / 63.0 inches long

Alternator

http://www.vbeltsupply.com/ecommerce/15570.html = 15/32 wide / 57.0 inches long

http://www.vbeltsupply.com/ecommerce/15571.html = 15/32 wide / 57.1 inches long

http://www.vbeltsupply.com/ecommerce/15575.html = 15/32 wide / 57.5 inches long

Water Pump & Power Steering

http://www.vbeltsupply.com/ecommerce/15450.html = 15/32 wide / 45.0 inches long

http://www.vbeltsupply.com/ecommerce/15455.html = 15/32 wide / 45.5 inches long

For a 403 GMC there are the following belt candidates:

Air Conditioning:

http://www.vbeltsupply.com/ecommerce/15603.html = 15/32 wide / 60.3 inches long

http://www.vbeltsupply.com/ecommerce/15605.html = 15/32 wide / 60.5 inches long

Alternator

http://www.vbeltsupply.com/ecommerce/15570.html = 15/32 wide / 57.0 inches long

http://www.vbeltsupply.com/ecommerce/15571.html = 15/32 wide / 57.1 inches long

http://www.vbeltsupply.com/ecommerce/15575.html = 15/32 wide / 57.5 inches long

Water Pump & Power Steering:

http://www.vbeltsupply.com/ecommerce/15445.html = 15/32 wide / 44.5 inches long

http://www.vbeltsupply.com/ecommerce/15450.html = 15/32 wide / 45.0 inches long

http://www.vbeltsupply.com/ecommerce/15455.html = 15/32 wide / 45.5 inches long

Regards,
Rob M.
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426

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Re: [GMCnet] Engine Belt Part Numbers [message #246082 is a reply to message #246081]

Tue, 01 April 2014 17:32

Otterwan

Messages: 946
Registered: July 2013
Location: Lynnwood (north of Seattl...

Karma: 0

Senior Member

Rob - I know these all pass the 10 mm wrench test and fit perfect on my 1976 455

Alternator:

http://www.amazon.com/gp/product/B000C36AFY/ref=oh_details_o03_s00_i00?ie=UTF8&psc=1

Power Steering:

http://www.amazon.com/gp/product/B000C34JHU/ref=oh_details_o03_s00_i01?ie=UTF8&psc=1

AC:

http://www.amazon.com/gp/product/B000C36AFO/ref=oh_details_o03_s01_i00?ie=UTF8&psc=1

1977 Birchaven, Lynnwood WA - "We may not be able to stop all evil in the world, but I know that how we treat one another is entirely up to us."

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Re: [GMCnet] Engine Belt Part Numbers [message #246087 is a reply to message #246082]

Tue, 01 April 2014 18:14

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma: 6

Senior Member

David,

More good current info!

THANKS!

Assuming Goodyear uses the same system as V-Belt Supply.com I've added some info below.

Regards,
Rob M.
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426

-----Original Message-----
From: David Orders

Rob - I know these all pass the 10 mm wrench test and fit perfect on my 1976 455

Alternator:

http://www.amazon.com/gp/product/B000C36AFY/ref=oh_details_o03_s00_i00?ie=UTF8&psc=1

Goodyear 15574 Gatorback V-Belt = 15/32 wide / 57.4 inches long = $14.70

Power Steering:

http://www.amazon.com/gp/product/B000C34JHU/ref=oh_details_o03_s00_i01?ie=UTF8&psc=1

Goodyear 15466 Gatorback V-Belt = 15/32 wide / 46.6 inches long = $13.39

AC:

http://www.amazon.com/gp/product/B000C36AFO/ref=oh_details_o03_s01_i00?ie=UTF8&psc=1

Goodyear 15634 Gatorback V-Belt = 15/32 wide / 63.4 inches long = $17.84

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426

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Re: [GMCnet] Engine Belt Part Numbers [message #246092 is a reply to message #246081]

Tue, 01 April 2014 18:58

kerry pinkerton

Messages: 2565
Registered: July 2012
Location: Harvest, Al

Karma: 15

Senior Member

Ok, is it a 10 or 11 mm wrench that is supposed to fit over? I thought it was an 11 would fit over but barely and a 10 would not???

Kerry Pinkerton - North Alabama Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L

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Re: [GMCnet] Engine Belt Part Numbers [message #246098 is a reply to message #246092]

Tue, 01 April 2014 19:14

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma: 6

Senior Member

Kerry,

Fraction Decimal Metric
15/32 0.4688 11.9063

Regards,
Rob M.
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426

-----Original Message-----
From: Kerry Pinkerton

Ok, is it a 10 or 11 mm wrench that is supposed to fit over? I thought it was an 11 would fit over but barely and a 10 would not???
--
Kerry

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426

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Re: [GMCnet] Engine Belt Part Numbers [message #246109 is a reply to message #246092]

Tue, 01 April 2014 20:20

Ken Burton

Messages: 10030
Registered: January 2004
Location: Hebron, Indiana

Karma: 10

Senior Member

Kerry Pinkerton wrote on Tue, 01 April 2014 18:58

Ok, is it a 10 or 11 mm wrench that is supposed to fit over? I thought it was an 11 would fit over but barely and a 10 would not???

You have it correct.

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

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