Big block water pump housing.

[Bigal75]

Good day!

Does anyobe know what's the size of the threads for the heater fittings screwed into the water pump housing?

Thanks

 

[tonysrt]

There are two 3/8" & one 1/4" pipe thread openings on the pump housing. The 1/4" is for the temp. sender and the other two are for heater hose. Those threads are plumbing size.

 

[lewtot184]

3/8" NPT for the heater hoses. my temp sender is 1/8" NPT.

 

[Bigal75]

Awesome. Thanks for the info.

 

[Daves69]

I'm guessing it depends on "which" housing your using.............
http://www.manciniracing.com/hehonib.html

 

[Bigal75]

I' m looking to plug the holes with fittings.