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[GMCnet] GMC Engine Water Pump 403, 6 Blade. Right? [message #210183]

Fri, 07 June 2013 09:06

BobDunahugh

Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA

Karma: 11

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I'm getting a new one to put on the 78 Royale that I sold. The one that is on it now is fine. But it could be wrong, or start to leak soon. The correct pump I believe has 6 blades on the impeller. Right? Bob Dunahugh
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Re: [GMCnet] GMC Engine Water Pump 403, 6 Blade. Right? [message #210199 is a reply to message #210183]

Fri, 07 June 2013 10:53

carguy

Messages: 498
Registered: June 2006
Location: Coshocton OH

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Bob, Here are a couple of photos of the water pump I got for my 403 from Jim Kanomata.

http://www.gmcmhphotos.com/photos/uploads/60/Water_Pump_form_Kanomata_003.jpg

Bill Brown - '77 Buckeye Cruiser
Coshocton OH
carguybill@sbcglobal.net

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[GMCnet] FW: GMC Engine Water Pump 403, 6 Blade. Right? [message #210208 is a reply to message #210183]

Fri, 07 June 2013 12:14

BobDunahugh

Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA

Karma: 11

Senior Member

Thanks Bill. But that's Jim's vary nice alum pump. I'm asking about the original cast iron pump.

I'm getting a new one to put on the 78 Royale that I sold. The one that is on it now is fine. But it could be wrong, or start to leak soon. The correct pump I believe has 6 blades on the impeller. Right? Bob Dunahugh
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Re: [GMCnet] FW: GMC Engine Water Pump 403, 6 Blade. Right? [message #210325 is a reply to message #210208]

Sat, 08 June 2013 10:30

USAussie

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

Karma: 6

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Bob,

I am looking at a rebuilt cast iron impeller water pump I got from Ken Frey and here's what I can see:

1) Part number cast into housing: 412265
2) Impeller blades = 6
3) Impeller OD = 4 3/16 inches
4) Blade height from back side to tip of impeller at OD = 3/4 inches

Regards,
Rob M.

-----Original Message-----
From: Bob Dunahugh

Thanks Bill. But that's Jim's vary nice alum pump. I'm asking about the original cast iron pump.

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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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[GMCnet] GMC Engine Water Pump 403, 6 Blade. Right? [message #210361 is a reply to message #210208]

Sat, 08 June 2013 15:53

BobDunahugh

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Registered: October 2010
Location: Cedar Rapids, IA

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Thanks Bob. That's the info I needed. Bob Dunahugh
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Re: [GMCnet] GMC Engine Water Pump 403, 6 Blade. Right? [message #210444 is a reply to message #210361]

Sun, 09 June 2013 08:47

Mr ERFisher

Messages: 7117
Registered: August 2005

Karma: 2

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here are the various water pumps for the gmc
http://gmcmotorhome.info/watpump.html

gene

On Sat, Jun 8, 2013 at 1:53 PM, Bob Dunahugh <yenko108@hotmail.com> wrote:

> Thanks Bob. That's the info I needed. Bob Dunahugh
> _______________________________________________
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--
Gene Fisher -- 74-23,77PB/ore/ca
�Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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Re: [GMCnet] GMC Engine Water Pump 403, 6 Blade. Right? [message #210448 is a reply to message #210444]

Sun, 09 June 2013 09:32

USAussie

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

Karma: 6

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Gene,

I checked the photos on your website and discovered:

1) I measured the impeller incorrectly - it is not 4 3/16 inches (measured with a tape measure) it is 4.218 inches (measured with a
digital verniers.

2) It is marked 412265 D6 - Which brings the statement below into guest ion.

It must have the D24 on it to be the correct one.

I got it from Ken Frey and I doubt he'd sell me an incorrect water pump.

Regards,
Rob M.

-----Original Message-----
From: gene Fisher

here are the various water pumps for the gmc
http://gmcmotorhome.info/watpump.html

gene

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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] GMC Engine Water Pump 403, 6 Blade. Right? [message #221510 is a reply to message #210448]

Sat, 07 September 2013 14:56

Broham

Messages: 204
Registered: March 2013
Location: Detroit, Michigan

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Has anyone had any luck with the AutoZone L58-295 or L58-295H? The have the open impeller but look like they are up to the task.

Todd Owner of a 1976 Eleganza II 26’ other toys: 93 Vette 84 Goldwing and gone but not forgotten 72 CB750 Chopper 96 Caprice Classic 34 Ford roadster 94 Fleetwood

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Re: [GMCnet] GMC Engine Water Pump 403, 6 Blade. Right? [message #221599 is a reply to message #210183]

Sun, 08 September 2013 08:11

Steven Ferguson

Messages: 3447
Registered: May 2006

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Senior Member

I did a bit of research on water pumps and the pumps with the largest
impellers were the ones used on 455 Olds irrigation pumps. Here's photos
and dimensions of most of the available rebuilds. I also tested most of
those models on a 150 trip that included long grades and triple digit
temps. Click here:
http://gmcws.org/Tech/Engine_Cooling_System_Basics_-_Steve_Ferguson.pdf
Steve F.

On Fri, Jun 7, 2013 at 7:06 AM, Bob Dunahugh <yenko108@hotmail.com> wrote:

> I'm getting a new one to put on the 78 Royale that I sold. The one that is
> on it now is fine. But it could be wrong, or start to leak soon. The
> correct pump I believe has 6 blades on the impeller. Right? Bob
> Dunahugh
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>

--
Take care,
Steve
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Re: [GMCnet] GMC Engine Water Pump 403, 6 Blade. Right? [message #221730 is a reply to message #221599]

Sun, 08 September 2013 23:11

Broham

Messages: 204
Registered: March 2013
Location: Detroit, Michigan

Karma: 0

Senior Member

thanks Steve

Todd Owner of a 1976 Eleganza II 26’ other toys: 93 Vette 84 Goldwing and gone but not forgotten 72 CB750 Chopper 96 Caprice Classic 34 Ford roadster 94 Fleetwood

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