GMC Water Pump

[john massey]

>John Wright
>Subject: Re: GMC: Water Pump
>
>Arch,
>I got out my pictures of the various pumps that can be bought for the
>455/403 and the one you appear to have is the one that every article I
>have says to avoid it at all cost. Are the impellers stamped steel with
>a 3 15/16" diameter and 6 small paddles? Casting number should be a
>#412265, it should also have a #D24 stamped on it. Avoid pumps with a
>D2 or D11 stamped on them also, they are too small inside. You really
>want the pump that has the 4 1/4" cast iron impeller with the large
>paddles. I would send it back to Cinnabar! You might call Ray Curtis
>at Eaton GMC & RV 1-800-764-3673 and see if he still have the good pump.

This is a bit late, just got back Saturday from GMCI Idaho rally.
Well,
I wouldn't recommend calling Eaton...this past Summer I called and ordered
their pump expecting the one discussed above. I got the pump with the small
cast impeller. When I called back, I was told - we haven't carried the pump
with the large impeller for years. If I wasn't satisfied, I could return the
pump for a refund. Since the pump cost $80 plus $17 for UPS shipping and I'd
have another $17 return shipping fee on top of that, I dropped it. Still
have the pump in its shipping box. Bought Caspro's pump at the Forest City
rally. Really ticked that I was not told about the small pump since I
mentioned the GMCMH article when I ordered it.

John Massey
1977 Royale
GMC Tidewater Crabs

 

[thomas g. warner]

Arch sometimes we cant see the forest for the trees. Is the size and
construction of the waterpump really important. I dont think so.

I would not hesitate to put a regular Toronado water pump on my GMC. The
difference is in the radiator. Weld up and seal off your exhaust crossovers
in the heads and dont worry anymore.

More dragons to slay ahead

>In a message dated 10/19/99 11:50:35 PM Central Daylight Time,

>
>> he pump in its shipping box. Bought Caspro's pump at the Forest City
>> rally. Really ticked that I was not told about the small pump since I
>> mentioned the GMCMH article when I ordered it.
>>
>John
>
>There is a whole bunch of Sh** here. Cinnabar says the stamped steel
>pump is the only way to go. I dont know. I am really getting fed up with
>having to deal with all of the BS surrounding my Motorhome. I think the
>Le Sharo is better because nobody will admit to owning one. No body
>tells me I am doing it wrong. Somehow have to redefine this
>whole mess. Will listen to all.
>
>Take Care
>Arch
>
>

 

[richard waters]

Arch,
Sometimes I feel like I don't want to admit to owning a GMC!

Richard

> --------------------------------------------I am really getting fed up
> with
> having to deal with all of the BS surrounding my Motorhome. I think the
> Le Sharo is better because nobody will admit to owning one. No body
> tells me I am doing it wrong. Somehow have to redefine this
> whole mess. Will listen to all.
>
> Take Care
> Arch

 

[jim white]

John
I also bought Eaton's water pump with the small impeller..however when i
took mine off it was the same pump...and im sure it was the
original...evidently the 403 had the smaller impeller...??
jim white
78 EII
sd

This is a bit late, just got back Saturday from GMCI Idaho rally.
Well,
I wouldn't recommend calling Eaton...this past Summer I called and ordered
their pump expecting the one discussed above. I got the pump with the small
cast impeller. When I called back, I was told - we haven't carried the pump
with the large impeller for years. If I wasn't satisfied, I could return the
pump for a refund. Since the pump cost $80 plus $17 for UPS shipping and I'd
have another $17 return shipping fee on top of that, I dropped it. Still
have the pump in its shipping box. Bought Caspro's pump at the Forest City
rally. Really ticked that I was not told about the small pump since I
mentioned the GMCMH article when I ordered it.

John Massey
1977 Royale
GMC Tidewater Crabs

 

[ron & gina]

Hi Arch,

I had the smaller stamped steel pump before replace. And my temps I believe
would have been fine(was ok, never boiled-over @75+mph in cool weather of
115degs.) if my cooling system was clean and clear!! I believe thats the
biggest thing!!! But might think alittle more if towing bigger toads!! Altho
P.O. pulled a Dat-soon truck with a camper shell all the time with no
problems with the old pump.

Ron&Gina
73 Pumpkin-Rose
Ft. Mohave, AZ.

- ----- Original Message -----
From:
To:
Sent: Tuesday, October 19, 1999 10:29 PM
Subject: Re: GMC: GMC Water Pump

> In a message dated 10/19/99 11:50:35 PM Central Daylight Time,

>
> > he pump in its shipping box. Bought Caspro's pump at the Forest City
> > rally. Really ticked that I was not told about the small pump since I
> > mentioned the GMCMH article when I ordered it.
> >
> John
>
> There is a whole bunch of Sh** here. Cinnabar says the stamped steel
> pump is the only way to go. I dont know. I am really getting fed up with
> having to deal with all of the BS surrounding my Motorhome. I think the
> Le Sharo is better because nobody will admit to owning one. No body
> tells me I am doing it wrong. Somehow have to redefine this
> whole mess. Will listen to all.
>
> Take Care
> Arch