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Walt Dupont--Me. · 09-19-2012, 08:58 AM

1-1/4 bolts might be a little long, you don't need more than 3/8 to 7/16 thread sticking out. Those holes are dead holes and you don't want the bolts to bottom out. Walt

09-19-2012, 08:58 AM	#4
Walt Dupont--Me. Senior Member Join Date: May 2010 Location: Gardiner Me. Posts: 4,200	Re: 59A Flathead Water Pump Bolt Size? 1-1/4 bolts might be a little long, you don't need more than 3/8 to 7/16 thread sticking out. Those holes are dead holes and you don't want the bolts to bottom out. Walt