Need some water pump help 454 B.B - The 1947 - Present Chevrolet & GMC Truck Message Board Network

FRENCHBLUE72 · 07-24-2005, 10:51 AM

What are you guys running for water pumps are you running a short pump or the long pump I have the long pump on now but an not sure if it will clear everything once I get it all back together... Any feedback would be great..

COBRO · 07-24-2005, 11:29 AM

The 454 in my 72 has a short pump on it -Im using all the stock brackets and pullies that came with the 402 that came in the truck. I would guess you need to figure what pump your brackets are set for so the belts will line up. HTH::::CB

OLDROCK&ROLLER · 07-24-2005, 11:31 AM

I'm running the long water pump its close but will work with a few mods to the fan housing. In case you don't know brackets and pulley's for short and long water pumps don't enter change.

FRENCHBLUE72 · 07-24-2005, 12:16 PM

I have the long water pump and bracket's that came with the 454 and am planning on running a electric fan set-up and am gonna order some new bracket's and a nice set of pulley's but wanted to make sure it would all fit before I started spending money on part's .. Thanks guys for your helpful info.....

COBRO · 07-24-2005, 01:37 PM

Yes if your going with an electric fan then you should have plently of room even with the long pump - I have looked at the GM performance serpentine belt conversion for my truck which uses a long pump and even keeping the flex fan I figured I have enough room. Am thinking that the difference between the long and short pump is like 1-1/2 " HTH:::::CB

dwaite72lnghrn · 07-25-2005, 09:10 AM

With the Serpentine setup long pump reverse flow, you will have about 2 3/4" between the bolts on the water pump pulley and the radiator. To run a 16" flex fan you need a 1" spacer, I DON'T think a clutch type fan will fit with a serpentine setup.

I could not fit electric fans between the rad and serp. Even in front of the rad it was tight with the airconditioning condenser. I could only fit 12" fans up front. The 1" spacer for the flex fan was needed to clear the belt and pulley. Yo go with a bigger 17" or 18" flex you would have to go to 2" spacer and have a bugger of a time trying to bolt it on the water pump.

Purs · 07-25-2005, 10:02 AM

i've got about 3" of space between my fans and pulleys. more than enough. the brackets are off an 86 1 ton pickup.

07-24-2005, 10:51 AM	#1
FRENCHBLUE72 PROJECT 7DEUCE Join Date: Dec 2002 Location: GRANTS PASS OR Posts: 21,606	Need some water pump help 454 B.B What are you guys running for water pumps are you running a short pump or the long pump I have the long pump on now but an not sure if it will clear everything once I get it all back together... Any feedback would be great.. __________________ GO BIG GREEN GO DUCKS MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P..

07-24-2005, 11:31 AM	#3
OLDROCK&ROLLER Registered User Join Date: Feb 2004 Location: WHITEVILLE N.C. Posts: 494	I'm running the long water pump its close but will work with a few mods to the fan housing. In case you don't know brackets and pulley's for short and long water pumps don't enter change. __________________ 72 CHEYENNE 10 SUPER 468/400/3.73

07-24-2005, 12:16 PM	#4
FRENCHBLUE72 PROJECT 7DEUCE Join Date: Dec 2002 Location: GRANTS PASS OR Posts: 21,606	I have the long water pump and bracket's that came with the 454 and am planning on running a electric fan set-up and am gonna order some new bracket's and a nice set of pulley's but wanted to make sure it would all fit before I started spending money on part's .. Thanks guys for your helpful info..... __________________ GO BIG GREEN GO DUCKS MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P..

07-25-2005, 09:10 AM	#6
dwaite72lnghrn Registered User Join Date: Jun 2002 Location: central pa Posts: 1,525	With the Serpentine setup long pump reverse flow, you will have about 2 3/4" between the bolts on the water pump pulley and the radiator. To run a 16" flex fan you need a 1" spacer, I DON'T think a clutch type fan will fit with a serpentine setup. I could not fit electric fans between the rad and serp. Even in front of the rad it was tight with the airconditioning condenser. I could only fit 12" fans up front. The 1" spacer for the flex fan was needed to clear the belt and pulley. Yo go with a bigger 17" or 18" flex you would have to go to 2" spacer and have a bugger of a time trying to bolt it on the water pump. __________________ 72 longhorn c30 502BB/th400/fact air/4.11rear/ custom camper 72 bug(the better half's) under reconstruction 2009 HHR aqua blue 71 GMC k20 350/sm465 2009 Chevy hd3500 6.6 Victory Red crew cab dually Dave & Jeanne Last edited by dwaite72lnghrn; 07-25-2005 at 09:19 AM. Reason: adds

07-25-2005, 10:02 AM	#7
Purs Got Big Block? Join Date: Apr 2000 Location: West Texas Posts: 1,510	i've got about 3" of space between my fans and pulleys. more than enough. the brackets are off an 86 1 ton pickup. Attached Images __________________ "Experience is what you get when you didn't get what you wanted."

07-24-2005, 11:29 AM	#2
COBRO Active Member Join Date: Jan 2005 Location: RDM,Oregon Posts: 285	The 454 in my 72 has a short pump on it -Im using all the stock brackets and pullies that came with the 402 that came in the truck. I would guess you need to figure what pump your brackets are set for so the belts will line up. HTH::::CB

07-24-2005, 01:37 PM	#5
COBRO Active Member Join Date: Jan 2005 Location: RDM,Oregon Posts: 285	Yes if your going with an electric fan then you should have plently of room even with the long pump - I have looked at the GM performance serpentine belt conversion for my truck which uses a long pump and even keeping the flex fan I figured I have enough room. Am thinking that the difference between the long and short pump is like 1-1/2 " HTH:::::CB

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