Long or Short Water Pump?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

56Cameo · 04-07-2007, 04:19 PM

What determines the need for a "long" or "short" water pump? I just got a used Chevy 350 for free and it needs the add ons. How do I know what water pump to put on?

Also, if this motor doesn't work out, any opinions on where to purchase an inexpensive remanufactured engine? Kragen? Autozone? Others??
Thanks.

Sammy · 04-07-2007, 04:45 PM

I am going thru this also. What you need is all the brackets pwr steering, alt, water pump pulley & crank shaft pulley for what ever pump you use long or short water pump. The entire set must match to either short or long water pump. Keeps everything lined up for your belts.

farmerfred · 04-07-2007, 05:15 PM

This thread should help. This one has a photo, but less discussion. HTH.

56Cameo · 04-07-2007, 07:35 PM

THANKS , FarmerFred!! I see you have answered this question before. This motor is a later model and the timing marks are right on top of the timing chain cover so I will need a long pump rather than a short one where the timing marks are off to the side.
Good Job!

Ram-Man · 04-07-2007, 07:39 PM

Does anyone know what years the long pumps are the same or most common?

*rage'nrat638* · 04-07-2007, 07:56 PM

73 and up used the long water pump on sbc

Ram-Man · 04-07-2007, 08:34 PM

What is the diffeerence on them? I went to the Advanced auto site and check 1975 350 and 1980 350 for a C-10 and the part #'s are different.

paaw · 05-08-2007, 05:58 PM

want to know, I have a 93 chevy 350 in my 72 wanna reinstall my ac, will the short pump work have the three ring, and two ting pulley, was wondering will it line up the hormanic balancer is really thick

RACINJASON22 · 05-08-2007, 06:36 PM

This may help with the differences.

As for what one to use short would have been on there but if you have nothing long pump asserories are easier to come by IMO.

Either will work.

04-07-2007, 04:19 PM	#1
56Cameo Registered User Join Date: May 2006 Location: Pinole, CA Posts: 7	Long or Short Water Pump?? What determines the need for a "long" or "short" water pump? I just got a used Chevy 350 for free and it needs the add ons. How do I know what water pump to put on? Also, if this motor doesn't work out, any opinions on where to purchase an inexpensive remanufactured engine? Kragen? Autozone? Others?? Thanks. __________________ 1972 Longbed continuous project 1956 Cameo in the garage(right now in parts) Remind me why I am doing this??

04-07-2007, 04:45 PM	#2
Sammy Registered User Join Date: Apr 2000 Location: Bonne Terre, Mo Posts: 3,005	Re: Long or Short Water Pump?? I am going thru this also. What you need is all the brackets pwr steering, alt, water pump pulley & crank shaft pulley for what ever pump you use long or short water pump. The entire set must match to either short or long water pump. Keeps everything lined up for your belts. __________________ '69 Chevy Long Fleet & '71 GMC Short Step & Project "ODD BALL" "You can wash a pig, soak it in most expensive perfume. In the end it is still just a pig." ODD BALL build thread http://67-72chevytrucks.com/vboard/s...d.php?t=478629"

04-07-2007, 05:15 PM	#3
farmerfred Registered User Join Date: Mar 2006 Location: ohio Posts: 66	Re: Long or Short Water Pump?? This thread should help. This one has a photo, but less discussion. HTH. __________________ 1972 C-20 350

04-07-2007, 07:35 PM	#4
56Cameo Registered User Join Date: May 2006 Location: Pinole, CA Posts: 7	Re: Long or Short Water Pump?? THANKS , FarmerFred!! I see you have answered this question before. This motor is a later model and the timing marks are right on top of the timing chain cover so I will need a long pump rather than a short one where the timing marks are off to the side. Good Job! __________________ 1972 Longbed continuous project 1956 Cameo in the garage(right now in parts) Remind me why I am doing this??

04-07-2007, 07:39 PM	#5
Ram-Man Senior Member Join Date: Aug 2006 Location: Minnesota Posts: 943	Re: Long or Short Water Pump?? Does anyone know what years the long pumps are the same or most common? __________________ Porterbuilt 8 Lugger http://67-72chevytrucks.com/vboard/s...d.php?t=691739

04-07-2007, 07:56 PM	#6
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	Re: Long or Short Water Pump?? 73 and up used the long water pump on sbc

04-07-2007, 08:34 PM	#7
Ram-Man Senior Member Join Date: Aug 2006 Location: Minnesota Posts: 943	Re: Long or Short Water Pump?? What is the diffeerence on them? I went to the Advanced auto site and check 1975 350 and 1980 350 for a C-10 and the part #'s are different. __________________ Porterbuilt 8 Lugger http://67-72chevytrucks.com/vboard/s...d.php?t=691739

05-08-2007, 05:58 PM	#8
paaw Registered User Join Date: Feb 2006 Location: nashville Posts: 217	Re: Long or Short Water Pump?? want to know, I have a 93 chevy 350 in my 72 wanna reinstall my ac, will the short pump work have the three ring, and two ting pulley, was wondering will it line up the hormanic balancer is really thick __________________ 1997 pontiac grand prix gt (daily driver) for now; 2004 dodge ram quad cab (wife's truck) 4.7; 2000 pontiac booneville (wife daily driver) 1972 chevy cheyenne 350 bored 40 over 700r trans 373 gears ( posi) soon to be daily driver; 2002 gsxr750 sold

05-08-2007, 06:36 PM	#9
RACINJASON22 GEARHEAD Join Date: Jan 2007 Location: CENTRAL,PA Posts: 2,284	Re: Long or Short Water Pump?? This may help with the differences. As for what one to use short would have been on there but if you have nothing long pump asserories are easier to come by IMO. Either will work. Attached Images __________________ 72 SWB 2WD MY PROJECT 72 LWB 4X4 FUTURE PROJECT SUBSCRIBE HEREBOARD VENDORS HERE NORWOOD MEET SURVIVOR! Last edited by RACINJASON22; 05-08-2007 at 06:38 PM.



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