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Big block wp question

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Old Jun 28, 2017 | 11:20 PM
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Default Big block wp question

On a long water pump with the 2 coolant ports on the top of the water pump, is there a inlet and outlet on these 2 ports or doesn't it matter.

Last edited by TOM B1; Aug 20, 2019 at 09:54 PM.
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Old Jun 28, 2017 | 11:29 PM
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The one toward the center is for the bypass hose to the intake. The heater hose connection should be just above the radiator hose connection on the right side.
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Old Jun 29, 2017 | 07:15 AM
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^x2.


in the pic on the right, the top port is typically the bypass, the port with sort of has "A" pointed at it is heater hose
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Old Jun 29, 2017 | 12:10 PM
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Looking at that picture, and not sure what year your BBC Corvette is, that pump is way different than the one on my 69 BBC. I don't have that boss on the left side. It would not fit my car with power steering.
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Old Jun 29, 2017 | 01:36 PM
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Also, it shows B as 5/8". Is that right for your car? My '71 454 requires 3/4" shaft.
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Old Jun 29, 2017 | 01:42 PM
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Yeah, mind does not look like that. I have the bypass only, from intake to top of WP.
But I have the short water pump-model ie. (Corvette), like most for a BB.
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Old Jun 29, 2017 | 01:46 PM
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Well, I'm lost now. My big block couldn't fit a long water pump. If I had a fan connected to it, it would hit the radiator.


Hmmm....
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Old Jun 29, 2017 | 02:07 PM
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Here's a shot of mine so you can see the hose connections.

Has electric fans and non corvette specific brackets and pulleys.


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Old Jun 29, 2017 | 03:29 PM
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ALL Corvettes use the short pump.
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Old Jul 1, 2017 | 12:17 PM
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GOOD CATCH
forgot to say that this engine is far from stock.
So the one on the drivers side is for a bypass if used and the one on the pass side is for the heater if used.

please look at My Profile for pics

Last edited by TOM B1; Jul 1, 2017 at 12:21 PM.
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