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Re: 340 Water Pump
[Re: EF8aar]
#1092901
10/12/11 12:59 AM
10/12/11 12:59 AM
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Joined: Mar 2011
Posts: 1,655 Cut and Shoot, TX
kentj340
top fuel
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top fuel
Joined: Mar 2011
Posts: 1,655
Cut and Shoot, TX
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The 1969 factory service manual says on page 7-4, "When replacing the water pump do not install a standard water pump on any air conditioned vehicle or vice versa. See specifications for proper pump."
Specifications for 340:
WATER PUMP IMPELLER Diameter-Number of Blades Standard.................4.38"-8 A/C.........................3.50"-6
My one owner '69 340 with A/C has the original 6.5" dia fan pulley. The water pump was replaced several times with after markets, but I now have an NOS 6-blade pump with casting number 2863067, although I'm not 100% sure that is the right casting number for '69 production.
If your original pump has a casting number, it might be original or rebuilt from an original core. If no casting number, it was probably after market cast in Brazil or similar.
You can have your water pump rebuilt with the old impeller. For rebuilders, see Hemmings Motor News. Last time I checked with parts stores like Auto Zone and NAPA a few years ago, they were all selling these water pumps only with the non-A/C impellers.
You should not attempt to use a later year Mopar aluminum water pump, as these are a totally different design with the exit nozzle on the opposite side from the cast iron one.
If you don't see two dolphins, you need a vacation.
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Re: 340 Water Pump
[Re: kentj340]
#1092903
10/13/11 05:39 PM
10/13/11 05:39 PM
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Joined: Aug 2005
Posts: 149 New York
EF8aar
member
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member
Joined: Aug 2005
Posts: 149
New York
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Quote:
The 1969 factory service manual says on page 7-4, "When replacing the water pump do not install a standard water pump on any air conditioned vehicle or vice versa. See specifications for proper pump."
Specifications for 340:
WATER PUMP IMPELLER Diameter-Number of Blades Standard.................4.38"-8 A/C.........................3.50"-6
I just call techincal service for GMB in Jersey. Their listing for a '70 340 is part #120-1070. They do not have a seperate listing for standard vs A/C. 120-1070 has an 8 blade 3.62" (92mm) diameter impeller.
Has anyone here run one of these on a standard (non-ac) car that can provide some feedback?
Thanks!
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