R Cubed Posted March 29, 2013 Share Posted March 29, 2013 (edited) Got another question, what thread size is the temp gauge sender hole in the top back of the cylinder head on a gmc 270 ? Answer:- npt also same thread and size to fit the temp sender hole on a Cummins 6BT.. Edited July 26, 2013 by R Cubed Quote Link to comment Share on other sites More sharing options...
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