waterpump bolt size,need help asap please - Chevy Impala SS Forum
 
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post #1 of 4 (permalink) Old 03-03-2015, 08:31 PM Thread Starter
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waterpump bolt size,need help asap please

car is in some parking lot and I lost 2bolts,


any one knows the size ? I am missing upper and middle bolt,I think they are 4" and 2",but size and thread pitch?

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post #2 of 4 (permalink) Old 03-03-2015, 08:54 PM
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waterpump bolt size,need help asap please

Believe they're 3/8 coarse thread SAE bolts that have been used on all small block Chevy's through the years.

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post #3 of 4 (permalink) Old 03-03-2015, 09:35 PM Thread Starter
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thanks for super quick reply

I just find it ,they are 3/8X16, 2" (middle one,one is stud if you still have air pump bracket) and other four,two on top and two on bottom (which goes to block water jacket ,and need thread sealant) are 3/8 X 16 and 4" long.

I find stainless steel one grade 8 at Lowes for .95$ and 1.78$ here in WA so the whole set of stainless steel grade 8 (not 5 like OEM) runs at 9.87$ with tax

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Last edited by ahoora; 03-05-2015 at 01:27 AM.
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post #4 of 4 (permalink) Old 03-04-2015, 06:27 AM
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Stainless is the way to go. If you are looking for other Stainless HW or just some nice kits for our cars, check out MMS Stainless.

http://www.mmsacc-stainless.com/

They have an engine kit for the LT1 which has all the HW including the WP bolts but also offer some nice smaller kits that are specific to the B-Body. I've bought items from them in the past and their pricing and quality is great.

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