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09-29-2016, 11:38 AM
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#26 |
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Registered User
Join Date: Sep 2016
Location: Spokane, WA
Posts: 44
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Re: 75 Chevy 400 SB cooling issue
Dan, I am glad I was able to help you! It is a lot more fun when your vehicles are working well!
In Weiand's defense, they offer their pumps with or without the bypass port. It just doesn't make much sense to put one without a bypass on a street driven vehicle. It makes it difficult for someone like yourself to try to figure out all the modifications that took place before you bought it. |
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09-30-2016, 07:42 AM
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#27 |
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Registered User
 
Join Date: Apr 2009
Location: New Freedom Pa.
Posts: 1,335
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Re: 75 Chevy 400 SB cooling issue
Glad you fixed it.
__________________
Desert |
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09-30-2016, 04:33 PM
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#28 |
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Registered User
Join Date: Sep 2016
Location: San Diego California
Posts: 23
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Re: 75 Chevy 400 SB cooling issue
Any suggestions on a replacement pump. I couldn't find one that works at the parts store the closest one they had was shorter for some reason. Should I just get a new Weiand or one of the millions of eBay pumps? I don't want to spend a bunch of money on the pump. The only reason I'm going to replace one I have is because the casting is so corroded and the backplate gasket they sold me is too thin and now the pump leaks.
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09-30-2016, 04:57 PM
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#29 | |
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Moderator
 
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,975
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Re: 75 Chevy 400 SB cooling issue
Quote:
http://www.speedwaymotors.com/the-to...ter-pump/28860
__________________
1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. |
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09-30-2016, 04:57 PM
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#30 |
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Registered User
Join Date: Sep 2016
Location: San Diego California
Posts: 23
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Re: 75 Chevy 400 SB cooling issue
Any suggestions on a replacement pump. I couldn't find one that works at the parts store the closest one they had was shorter for some reason. Should I just get a new Weiand or one of the millions of eBay pumps? I don't want to spend a bunch of money on the pump. The only reason I'm going to replace one I have is because the casting is so corroded and the backplate gasket they sold me is too thin and now the pump leaks.
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09-30-2016, 05:21 PM
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#31 |
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Registered User
Join Date: Jul 2007
Location: Tucson, AZ
Posts: 3,188
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Re: 75 Chevy 400 SB cooling issue
I still recommend AC Delco - shop the OEM online dealers - worth the extra cost, IMHO.
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09-30-2016, 07:05 PM
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#32 |
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Registered User
Join Date: Sep 2016
Location: San Diego California
Posts: 23
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Re: 75 Chevy 400 SB cooling issue
My browser was tripping out didn't mean to post the same thing three times
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09-30-2016, 07:09 PM
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#33 |
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Registered User
Join Date: Sep 2016
Location: San Diego California
Posts: 23
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Re: 75 Chevy 400 SB cooling issue
It has to be a short pump to work with my pully set up.
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