1971 SBC short water pump height - The 1947 - Present Chevrolet & GMC Truck Message Board Network

grancuda · 09-26-2009, 12:51 AM

I keep getting water pumps from oreileys that put the water pump pulley about 3/8 too far out and I have shimmed the crank out and spaced out the alt bracket but want to correct it. Anyone have advice on making this right and where to get a water pump the right height? I don't want any shims on the crank, I just want it to be right, it was lined up with the old water pump and I just gave them my pump for a core and didn't think about measuring the height.

unclewatts · 09-26-2009, 04:43 AM

How about finding a deeper water pump pulley?

**Hart_Rod** · 09-26-2009, 08:48 AM

What pulleys are you running?

Longhorn Man · 09-26-2009, 09:26 AM

a photo of your set up would help us tell you whats wrong

grancuda · 09-26-2009, 09:56 AM

Stock pulleys, brackets
no a/c
no power steering
no problems till I bought a new w/p

anyone know what the w/p height should be f/ '71 350

Longhorn Man · 09-26-2009, 10:26 AM

sounds like you have the wrong pump. is it the same as the old one?

**john** · 09-26-2009, 01:20 PM

pump length.

Longhorn Man · 09-26-2009, 01:56 PM

originally, the bolt pattern on short pump pullies were different than long pumps, then some one had this 'wonderful' idea of making the pumps have both bolt patterns. In otherwords, back in the day, you would never get it put togetherr before realizing something was wrong.

Tx Firefighter · 09-26-2009, 08:08 PM

I have run into this before on pumps. What I did was put them in my press and pressed them deeper. Be careful though, you can break the pump body doing this. Done that too.

grancuda · 09-26-2009, 08:43 PM

3 oreilley stores later, I found one that is 5-5/8
most were running about 1/4 too far and the one I took back was 3/8 too far out
Moral of the story, take a tape and verify the pulley height.

mclairmo · 09-27-2009, 02:46 AM

That sucks. Great tip. I never realized they could be that far off. I wonder how many guys are running misaligned pulleys now and don't even know it.

09-26-2009, 12:51 AM	#1
grancuda Registered User Join Date: Nov 2007 Location: Central OK Posts: 396	1971 SBC short water pump height I keep getting water pumps from oreileys that put the water pump pulley about 3/8 too far out and I have shimmed the crank out and spaced out the alt bracket but want to correct it. Anyone have advice on making this right and where to get a water pump the right height? I don't want any shims on the crank, I just want it to be right, it was lined up with the old water pump and I just gave them my pump for a core and didn't think about measuring the height.

09-26-2009, 04:43 AM	#2
unclewatts 70 Chevrolet=Obsession Join Date: Jun 2009 Location: nice ca Posts: 1,067	Re: 1971 SBC short water pump height How about finding a deeper water pump pulley? __________________ I'm Just like my truck. Old, Ugly and Grouchy. Except my truck starts easily in the morning and doesn't smoke! IT'S NOT EASY BEING GREEN! -Kermit the frog 1970 Chevrolet C-10 Longbed Stepside : 350, Muncie M20, 3.08 GM corp. positraction Forest green exterior/light green interior(Where all my money goes) 1996 Toyota Corolla (Parts runner)

09-26-2009, 08:48 AM	#3
Hart_Rod ************* Join Date: Apr 2005 Location: Pensacola, FL Posts: 17,858	Re: 1971 SBC short water pump height What pulleys are you running? __________________ Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3

09-26-2009, 09:26 AM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: 1971 SBC short water pump height a photo of your set up would help us tell you whats wrong

09-26-2009, 09:56 AM	#5
grancuda Registered User Join Date: Nov 2007 Location: Central OK Posts: 396	Re: 1971 SBC short water pump height Stock pulleys, brackets no a/c no power steering no problems till I bought a new w/p anyone know what the w/p height should be f/ '71 350 Last edited by grancuda; 09-26-2009 at 10:02 AM. Reason: Added 71 350

09-26-2009, 10:26 AM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: 1971 SBC short water pump height sounds like you have the wrong pump. is it the same as the old one?

09-26-2009, 01:20 PM	#7
john member #16 Join Date: Dec 1999 Location: Yuba City Ca. Posts: 3,618	Re: 1971 SBC short water pump height pump length. Attached Images __________________ john http://67-72chevytrucks.com/vboard/showgroups.php board vendors http://www.flickr.com/photos/1745471...7602865984234/

09-26-2009, 01:56 PM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: 1971 SBC short water pump height originally, the bolt pattern on short pump pullies were different than long pumps, then some one had this 'wonderful' idea of making the pumps have both bolt patterns. In otherwords, back in the day, you would never get it put togetherr before realizing something was wrong.

09-26-2009, 08:08 PM	#9
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: 1971 SBC short water pump height I have run into this before on pumps. What I did was put them in my press and pressed them deeper. Be careful though, you can break the pump body doing this. Done that too. __________________ I'm on the Instagram- @Gearhead_Kevin

09-26-2009, 08:43 PM	#10
grancuda Registered User Join Date: Nov 2007 Location: Central OK Posts: 396	Re: 1971 SBC short water pump height 3 oreilley stores later, I found one that is 5-5/8 most were running about 1/4 too far and the one I took back was 3/8 too far out Moral of the story, take a tape and verify the pulley height.

09-27-2009, 02:46 AM	#11
mclairmo Registered User Join Date: Jan 2006 Location: Take Off Posts: 1,908	Re: 1971 SBC short water pump height That sucks. Great tip. I never realized they could be that far off. I wonder how many guys are running misaligned pulleys now and don't even know it.

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