[TR] Water pump housing inlet/outlet question

[Carl TR]

I have two water pump housing available to install on my TR3 engine.

Everything is the same except the opening on the one that is on top has two
different opening sizes:  3/8" & 5/8".  Which one is correct?

Seems to me that the more flow the better, but I have been wrong before.

Thanks
Carl
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Carl - Tampa
1961 TR3A TS81802LO
Body Off Restoration
Completion Date: NATC 2010 (Jekyll Island, GA)
http://mysite.verizon.net/cfmtr3a/
(I need to update my pictures; 11/27/09