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73-87 Chevy _ GMC Trucks
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Water Pumps.....
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Topic: Water Pumps..... (Read 2263 times)
truxson
Newbie
Posts: 18
Newbie
Water Pumps.....
«
on:
November 20, 2017, 08:28:55 PM »
Folks:
I'm almost embarrassed to ask this question, but my memory is failing with years...
I have a 76 Chevy truck. It has 520,000 miles on the frame. The 350 engine went out years ago and I replaced it with a 1984 (or so) 305. That engine had more miles on it than the one I took out and is now over 600K! For the first time, the water pump is leaking. I thought no problem...look at RockAuto. BUT....apparently 305 wasn't an option in 76 trucks. They list a number of pumps for 350. I looked at 84 305 water pumps. Again a number of pumps were listed, but the numbers were different from those for the 350. So...Now for my question.....
Is the short vs. long pump issue the only thing to worry about or is (are) there other things to cause problems? Does anyone have a recommendation on which pump to use? I want to try for another 600K!
Sorry for so many words....I hope one of you guys can help me!
Thanks, David. (truxson)
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Engineer
Senior Member
Posts: 1402
Re: Water Pumps.....
«
Reply #1 on:
November 20, 2017, 09:23:00 PM »
If the alternator and power steering brackets are original to the truck just get a long water pump standard rotation.
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2002 Chevy 2500HD 4x4 8.1/ZF6sp RC/LB
2001 Chevy 2500HD 4x4 6.0/4L85E EC/SB
1997 Chevy Blazer 4x4
1994 Chevy K-2500 4x4 C6P 5.7/4L80E
1979 Chevy K-30 4x4 4sp 4.10
1977 Chevy K-30 4x4 4sp 4.10 454
Dad of an Eagle Scout, and a Life Scout
truxson
Newbie
Posts: 18
Newbie
Re: Water Pumps.....
«
Reply #2 on:
November 20, 2017, 09:23:50 PM »
They are, and thanks!
David.
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Rapid Roy
Junior Member
Posts: 635
Euless, Texas
Re: Water Pumps.....
«
Reply #3 on:
November 20, 2017, 09:32:15 PM »
An easy way to be sure is remove water pump and take to auto parts store to get exact match. Always a good idea when unsure.
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1974 Cheyenne 10 LWB STOCK 350 W HEI /TH350/AC/4 BBL Quadrajet
Mopar by Birth
Chevy by Choice
truxson
Newbie
Posts: 18
Newbie
Re: Water Pumps.....
«
Reply #4 on:
November 21, 2017, 08:12:32 PM »
I agree. But in this case, it's my ride. It's a long way to the parts house, and would take a couple of hours to walk there! That's why I took the 'easy' way out and asked for advice. There are some pretty smart folks on this forum, and I appreciate all the help I can get.
Regards, David.
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m3talc0re
Registered Users
Posts: 174
Newbie
Re: Water Pumps.....
«
Reply #5 on:
November 26, 2017, 01:47:22 PM »
I was about to start my own thread, but going to add to this one instead...
Anyway, my water pump looks like it is leaking, too. Can the water pump be taken apart and fixed or is it better to just replace it?
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VileZambonie
Global Moderator
Senior Member
Posts: 18979
Re: Water Pumps.....
«
Reply #6 on:
November 26, 2017, 02:15:30 PM »
A new one ranges from about $14 - $40 dollars. They're throw away items
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, ___
/ _ _ _\_
⌠ŻŻŻŻŻ' [☼===☼]
`()_);-;()_)--o--)_)
74 GMC
,
75 K5
,
84 GMC
,
85 K20
,
86 k20
,
79 K10
Stewart G Griffin
Senior Member
Posts: 3324
Re: Water Pumps.....
«
Reply #7 on:
November 26, 2017, 08:29:18 PM »
Generally, all small block chevy water pumps interchange with each other (although you have to make sure you need either the long or short pump---most likely you need the long pump to match your accessory brackets and pulleys----and even the short and long pumps themselves interchange on the engine itself. MOST applications use the long pump)
i am not sure at the moment which stock-type iron pumps are decent. i did not have good luck with the Advance auto parts budget line.
i went with an Edlebrock 8811 and am very impressed with the quality.
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73-87 Chevy _ GMC Trucks
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Water Pumps.....