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GMC V6 and V12 Engines Engine repair and rebuilding

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  #1  
Old September 22nd, 2022, 01:16 AM
Mike Caldwell Mike Caldwell is offline
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Default Bad news for my 401?

Started teardown. Didn't get far before I had to stop but found this.
Would freezing do this? Wonder how much more I'll find
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File Type: jpg water pump hole 2.jpg (205.9 KB, Multiple views, 8 clicks)
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Old September 22nd, 2022, 04:05 AM
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FetchMeAPepsi FetchMeAPepsi is offline
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Default Re: Bad news for my 401?

I don't know anything, but isn't that hole by the pulley system? That wouldn't be affected by freezing is my guess. Maybe something got caught in it while it was running?
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Old September 22nd, 2022, 07:02 AM
Prowbar Prowbar is offline
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Default Re: Bad news for my 401?

Yeah that is a hole in the water pump alright. As you said probably freezing. If you're going to put the 401 in your Willy's you probably need to swap the timing cover for a 305 style, switch to a timing chain in order to maintain the correct fan height.
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Old September 22nd, 2022, 02:59 PM
Mike Caldwell Mike Caldwell is offline
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Default Re: Bad news for my 401?

Thanks for the advice. I'll investigate further as time permits. I assumed there could be problems.
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Old September 22nd, 2022, 09:36 PM
Prowbar Prowbar is offline
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Default Re: Bad news for my 401?

Quote:
Originally Posted by Mike Caldwell View Post
Thanks for the advice. I'll investigate further as time permits. I assumed there could be problems.
Good luck.
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