Water pump bolts - Team Camaro Tech
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post #1 of 3 (permalink) Old Jun 11th, 11, 02:09 AM Thread Starter
Senior Tech
Join Date: Apr 2001
Location: NJ
Posts: 213
Water pump bolts

I'm replacing the water pump on my car (original 1969 350) and I'm drawing a blank, do I need anti seize or sealer on the bolts? Also, the bottom two bolts had 14mm heads and the top two had 9/16th heads, Is there a reason for that, or were the 14mm bolts incorrectly installed sometime in the car's past? I didn't think they used metric bolts in 1969.

1969 Camaro RS/SS 350

Last edited by JPCamaro; Jun 11th, 11 at 02:57 AM.
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post #2 of 3 (permalink) Old Jun 11th, 11, 05:26 AM
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Join Date: Dec 2005
Location: Cedar Rapids, IA
Posts: 1,810
Re: Water pump bolts

If I remember correctly I put silicone around the threads. I think some of the bolt holes go into the water jacket area. Yea I don't think they used metric then. Go to the hardware store and get a matched set of stainless bolts. Also don't forget to get a set of wp gaskets. Maybe they come with the wp.

Last edited by tgifford5; Jun 11th, 11 at 05:28 AM. Reason: added info
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post #3 of 3 (permalink) Old Jun 11th, 11, 07:04 PM
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Join Date: Jun 2009
Location: Adelaide, Australia
Posts: 499
Re: Water pump bolts

I used silicone on my water pump bolts.

9/16" and 14mm is very close but surely 9/16" must be the bolt for a '69 small block

ARP have specific kits for SBC water pump



Almost finished (?) 68 Camaro
383 stroker
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