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Water pump height.


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Hi everyone,

I noticed that my water pump was leaking when I put the car away for the winter, so now that it's starting to get a little warmer I thought I would replace it. When I went to find a replacement it looks like they come in two heights one is just listed as "standard" and the other is listed as a 4 15/32" (or 4.469") height. I have a 1969 G.T.O. with a 400 c.u. motor. Do I measure from the block to the where the fan mounts or the front of the pump to the fan mount?

Thanks for any help.

https://www.rockauto.com/en/moreinfo.php?pk=11203645&cc=1256363&jsn=1671

https://www.rockauto.com/en/moreinfo.php?pk=948816&cc=1256363&jsn=1670

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18 hours ago, Federated52 said:

Hi everyone,

I noticed that my water pump was leaking when I put the car away for the winter, so now that it's starting to get a little warmer I thought I would replace it. When I went to find a replacement it looks like they come in two heights one is just listed as "standard" and the other is listed as a 4 15/32" (or 4.469") height. I have a 1969 G.T.O. with a 400 c.u. motor. Do I measure from the block to the where the fan mounts or the front of the pump to the fan mount?

Thanks for any help.

https://www.rockauto.com/en/moreinfo.php?pk=11203645&cc=1256363&jsn=1671

https://www.rockauto.com/en/moreinfo.php?pk=948816&cc=1256363&jsn=1670

Todd, you get that dimension by measuring from the gasket sealing surface of the pump to the mounting surface hub where the pulley mounts! An easy way to do that is take a straight edge across the hub flange, minus the pulley, and measure down to the gasket surface of the water pump.

Edited by Last Indian
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