Water pump studs - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**71CHEVYSHORTBED402** · 03-26-2019, 06:18 PM

Found on the parts book a stud was used to mount the water pump, generally placed on the top passenger side on most trucks. The 70-71 BBC takes two different studs, one is placed on the top driver's side as well.

What were these studs for?

I found mine with 3/8-16 x 1.3/4" bolts. They're stamped with a dog bone, which is era correct, but don't know why I'd have four if it had studs. 1.3/4" seems a little short as well, with a lock washer they're not even using 1/2" of a 1" hole. Not even that with the top alternator bracket mounted by the top driver's side bolt/stud.

http://www.gmpartswiki.com/getpage?pageid=21310

03-26-2019, 06:18 PM	#1
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,391	Water pump studs Found on the parts book a stud was used to mount the water pump, generally placed on the top passenger side on most trucks. The 70-71 BBC takes two different studs, one is placed on the top driver's side as well. What were these studs for? I found mine with 3/8-16 x 1.3/4" bolts. They're stamped with a dog bone, which is era correct, but don't know why I'd have four if it had studs. 1.3/4" seems a little short as well, with a lock washer they're not even using 1/2" of a 1" hole. Not even that with the top alternator bracket mounted by the top driver's side bolt/stud. http://www.gmpartswiki.com/getpage?pageid=21310 __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly guide (kit) for restoring this truck from the ground up, complete with details including full hardware descriptions. Much of the info. applies to all 67-72 GM. My build thread, with some info. about the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025



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