Big Block Water Pump. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Hardesty454 · 03-07-2013, 12:16 AM

Mine is out and done for....

Went to just get the stock replacement and its about $100!!

Looking through summit, ebay, etc and dont know if I should order the stock OE replacement, a higher flow, or just swap it all over and get an electric pump and fans.

Difference between long and short (Nose cone?)
Benefits to either? Issues with one or the other?

If anyone has a good suggestion on brand as well please feel free to let me know!

**leddzepp** · 03-07-2013, 12:19 AM

Long and short water pumps are different. You need to know which one you have. What side of the engine is your alternator on? If it is on the drivers side, you have a short water pump. If it is on the passenger side, you have a long water pump.

kelsfine69 · 03-07-2013, 12:30 AM

Had a stock cast iron GM pump, Replaced it with electric and had heating problems with 2 duel electric fans . Replaced with the aluminum Edelbrock high flow belt drive pump and works great, and it looks good too

**TBONE1964** · 03-07-2013, 12:32 AM

To add to leddzeps comment, if you change from short to long or long to short, you also have to change alternator brackets, p/s brackets, and all the pullys which gets pricey. I could be wrong but I think the p/s pump may also be different.

If it were me, I would stay away from electric pumps for a daily driver. $100.00 for a new stock replacement is not bad as they are getting $60.00 to $70.00 for a reman. Reman are ok but after they have been remanufactured a few times the cores get a little beat up and fail more often.

Just some thoughts.

Hardesty454 · 03-07-2013, 12:34 AM

I have a short pump.

Edelbrock high flow you say? Which model? Where did you purchase from?

JellyBeanDriver · 03-07-2013, 01:56 AM

I just went through this. Bought a GMB from Amazon. Really nice casting, great price, good feel, all the holes and posts lined up with no issues.

This was after looking at Autozone's $59.99 HD unit, and both offerings they had at O'reilly (new and rebuilt).

I've got a Prime acct so the shipping was free and the unit was $34.99 but I see they're currently out of stock for the one sold by amazon themselves.

Same unit sells for $56 at Summit.

GMB 130-1320 OE Replacement Water Pump :...
edit: Nevermind - this is for the long pump. Take a look at GMB anyways.

**leddzepp** · 03-07-2013, 02:08 AM

Spend the $100 and get a quality replacement. It is the most economical and sensible route to take if there are no other problems with your cooling system.
Posted via Mobile Device

MARKDTN · 03-07-2013, 08:15 AM

If you have time, take yours and have it rebuilt. I had one done at CarQuest and it was like $40 and I had MY core back. Took about 2 weeks I think.

cdowns · 03-07-2013, 10:05 AM

i'd look at the aftermarket cast aluminium water pumps// i have always figured every little bit of weight taht you can save is worth it

kelsfine69 · 03-07-2013, 11:08 AM

I bought mine locally. Natural cast aluminum finish. Heres some links

http://www.jegs.com/photos/300/350/350-wpinside.jpg

http://www.jegs.com/p/Edelbrock/Edel...44307/10002/-1

I see they have other finishes now like black and endurashine. I like the cast look to match my intake. It works well for me

Hardesty454 · 03-07-2013, 11:20 AM

Thanks guys!
Posted via Mobile Device

67ctener · 03-08-2013, 01:18 AM

Can a long pump be ran with the stock mechanical fan with clutch and clear the radiator?
Posted via Mobile Device

Hardesty454 · 03-08-2013, 01:24 AM

No. Won't clear. Besides that you would need all new brackets...
Posted via Mobile Device

67ctener · 03-08-2013, 02:29 AM

Wanted to run the bs serpentine
Posted via Mobile Device

cdowns · 03-08-2013, 10:12 AM

Quote:

Originally Posted by 67ctener

Wanted to run the bs serpentine
Posted via Mobile Device

i think most serpintine use reverse rotation pumps so determine that first b4 goin any further

**70CHEVYBB** · 03-08-2013, 10:35 AM

Cp5038 is orielly's part number for the reverse rotation water pump. less the 50 bucks. Its the same one I am using on my big block with the KWIK Performance adapter plates to use sbc brackets.

eightbanger · 03-08-2013, 11:37 AM

Saw a nice marine short pump on Ebay, had straight cut brass impeller so it could run clockwise or counter.

**WIDESIDE72** · 03-08-2013, 01:34 PM

Quote:

Originally Posted by eightbanger

Saw a nice marine short pump on Ebay, had straight cut brass impeller so it could run clockwise or counter.

IMO a straight cut impeller wod not pump well
Posted via Mobile Device

03-07-2013, 12:16 AM	#1
Hardesty454 Registered User Join Date: Feb 2011 Location: Riverbank, Ca Posts: 1,006	Big Block Water Pump. Mine is out and done for.... Went to just get the stock replacement and its about $100!! Looking through summit, ebay, etc and dont know if I should order the stock OE replacement, a higher flow, or just swap it all over and get an electric pump and fans. Difference between long and short (Nose cone?) Benefits to either? Issues with one or the other? If anyone has a good suggestion on brand as well please feel free to let me know! __________________ Rob 1971 c10 - ground up in progress Tripp's Speed Shop Build - http://67-72chevytrucks.com/vboard/s...d.php?t=589750

03-07-2013, 12:19 AM	#2
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 20,005	Re: Big Block Water Pump. Long and short water pumps are different. You need to know which one you have. What side of the engine is your alternator on? If it is on the drivers side, you have a short water pump. If it is on the passenger side, you have a long water pump. __________________ 1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man

03-07-2013, 12:30 AM	#3
kelsfine69 18 Till I Die Join Date: Mar 2005 Location: Alberta, Canada Posts: 1,522	Re: Big Block Water Pump. Had a stock cast iron GM pump, Replaced it with electric and had heating problems with 2 duel electric fans . Replaced with the aluminum Edelbrock high flow belt drive pump and works great, and it looks good too __________________ 2011 GMC Acadia 1969 GMC BBC LS7 2007 GMC Crew Duramax 1987 Camaro Iroc 350 Tuned Port Injection 42000Km 1987 Chevrolet Silverado 350 TBI 1987 Chevrolet Silverado 350 TBI(yes 2) Take me drunk, I'm too home...

03-07-2013, 12:32 AM	#4
TBONE1964 Cluster King Join Date: Nov 2012 Location: Junction City, OR Posts: 5,263	Re: Big Block Water Pump. To add to leddzeps comment, if you change from short to long or long to short, you also have to change alternator brackets, p/s brackets, and all the pullys which gets pricey. I could be wrong but I think the p/s pump may also be different. If it were me, I would stay away from electric pumps for a daily driver. $100.00 for a new stock replacement is not bad as they are getting $60.00 to $70.00 for a reman. Reman are ok but after they have been remanufactured a few times the cores get a little beat up and fail more often. Just some thoughts.

03-07-2013, 12:34 AM	#5
Hardesty454 Registered User Join Date: Feb 2011 Location: Riverbank, Ca Posts: 1,006	Re: Big Block Water Pump. I have a short pump. Edelbrock high flow you say? Which model? Where did you purchase from? __________________ Rob 1971 c10 - ground up in progress Tripp's Speed Shop Build - http://67-72chevytrucks.com/vboard/s...d.php?t=589750

03-07-2013, 01:56 AM	#6
JellyBeanDriver Registered User Join Date: Jul 2012 Location: United States Posts: 268	Re: Big Block Water Pump. I just went through this. Bought a GMB from Amazon. Really nice casting, great price, good feel, all the holes and posts lined up with no issues. This was after looking at Autozone's $59.99 HD unit, and both offerings they had at O'reilly (new and rebuilt). I've got a Prime acct so the shipping was free and the unit was $34.99 but I see they're currently out of stock for the one sold by amazon themselves. Same unit sells for $56 at Summit. GMB 130-1320 OE Replacement Water Pump :... edit: Nevermind - this is for the long pump. Take a look at GMB anyways. Last edited by JellyBeanDriver; 03-07-2013 at 02:02 AM.

03-07-2013, 02:08 AM	#7
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 20,005	Re: Big Block Water Pump. Spend the $100 and get a quality replacement. It is the most economical and sensible route to take if there are no other problems with your cooling system. Posted via Mobile Device __________________ 1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man

03-07-2013, 08:15 AM	#8
MARKDTN Registered User Join Date: Jan 2011 Location: Chattanooga, TN Posts: 2,151	Re: Big Block Water Pump. If you have time, take yours and have it rebuilt. I had one done at CarQuest and it was like $40 and I had MY core back. Took about 2 weeks I think. __________________ '83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project

03-07-2013, 10:05 AM	#9
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Big Block Water Pump. i'd look at the aftermarket cast aluminium water pumps// i have always figured every little bit of weight taht you can save is worth it __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

03-07-2013, 11:08 AM	#10
kelsfine69 18 Till I Die Join Date: Mar 2005 Location: Alberta, Canada Posts: 1,522	Re: Big Block Water Pump. I bought mine locally. Natural cast aluminum finish. Heres some links http://www.jegs.com/photos/300/350/350-wpinside.jpg http://www.jegs.com/p/Edelbrock/Edel...44307/10002/-1 I see they have other finishes now like black and endurashine. I like the cast look to match my intake. It works well for me __________________ 2011 GMC Acadia 1969 GMC BBC LS7 2007 GMC Crew Duramax 1987 Camaro Iroc 350 Tuned Port Injection 42000Km 1987 Chevrolet Silverado 350 TBI 1987 Chevrolet Silverado 350 TBI(yes 2) Take me drunk, I'm too home...

03-07-2013, 11:20 AM	#11
Hardesty454 Registered User Join Date: Feb 2011 Location: Riverbank, Ca Posts: 1,006	Re: Big Block Water Pump. Thanks guys! Posted via Mobile Device __________________ Rob 1971 c10 - ground up in progress Tripp's Speed Shop Build - http://67-72chevytrucks.com/vboard/s...d.php?t=589750

03-08-2013, 01:18 AM	#12
67ctener Registered User Join Date: Oct 2012 Location: Arlington Washington Posts: 1,808	Re: Big Block Water Pump. Can a long pump be ran with the stock mechanical fan with clutch and clear the radiator? Posted via Mobile Device __________________ Scott 67 c10 sold 89 c1500 90 k2500 91 s10 #chevyonly

03-08-2013, 01:24 AM	#13
Hardesty454 Registered User Join Date: Feb 2011 Location: Riverbank, Ca Posts: 1,006	Re: Big Block Water Pump. No. Won't clear. Besides that you would need all new brackets... Posted via Mobile Device __________________ Rob 1971 c10 - ground up in progress Tripp's Speed Shop Build - http://67-72chevytrucks.com/vboard/s...d.php?t=589750

03-08-2013, 02:29 AM	#14
67ctener Registered User Join Date: Oct 2012 Location: Arlington Washington Posts: 1,808	Re: Big Block Water Pump. Wanted to run the bs serpentine Posted via Mobile Device __________________ Scott 67 c10 sold 89 c1500 90 k2500 91 s10 #chevyonly

03-08-2013, 10:35 AM	#16
70CHEVYBB Senior Member Join Date: Feb 2012 Location: chillicothe, illinois Posts: 688	Re: Big Block Water Pump. Cp5038 is orielly's part number for the reverse rotation water pump. less the 50 bucks. Its the same one I am using on my big block with the KWIK Performance adapter plates to use sbc brackets.



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03-08-2013, 11:37 AM	#17
eightbanger 454 MAKES IT ROAR Join Date: Jan 2008 Location: Essex, U.K Posts: 2,701	Re: Big Block Water Pump. Saw a nice marine short pump on Ebay, had straight cut brass impeller so it could run clockwise or counter. __________________ Nigel. An American living in a British body. 1971 Chevy Cheyenne 10 454 "In a time of universal deceit, telling the truth becomes a revolutionary act." - George Orwell "When injustice becomes law, resistance becomes duty" - Thomas Jefferson No more pain. 03.12.60 -- 12.28.10 http://www.youtube.com/Eightbanger

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