A pretty common installation was to put a T-type shutoff valve at the cylinder head port with a pipe thread going into the head and a hose nipple to attach the heater hose. The valve had a threaded shank to shut off the flow when heat was not needed. The return line attached to the water pump housing with a pipe/hose adapter fitting. Those parts should be included in any automotive heat/air conditioning universal parts catalog. Try NAPA or one of the other "professional" auto shop parts suppliers, not Auto Zone, etc.

Just checked- - - -there are bunches of them on Ebay. Search "Heater hose shutoff valve".
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
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