Water pump question on BBC - The 1947 - Present Chevrolet & GMC Truck Message Board Network

71Rat · 11-22-2007, 08:34 PM

I was wondering if a Long Water Pump would work on a BBC with 72 style mounts on our trucks? I figured shorts came with the truck but i was wondering if i would run into clearance problems with a long pump.

Thanks for any input
71rat

**kwmech** · 11-22-2007, 10:35 PM

electric fans.

FRENCHBLUE72 · 11-22-2007, 10:43 PM

Im running a lwp but have yet to get to the cooling part of the equation..

1LIME69 · 11-22-2007, 10:44 PM

I dont think it will. I have a bbc with a long water pump in my 69 with the tubular motor mounts and I have shifted the engine back 1 in and I barely have enough room for my electric fan.

**clay68c10** · 11-23-2007, 12:16 AM

I re-sold a serpentine belt setup since it put the wp hub too close to the radiator. I would have had to pull the rad to get the pulley off.

71Rat · 11-23-2007, 06:10 AM

thanks everyone for the input

dwaite72lnghrn · 11-23-2007, 06:15 AM

You will have about 2 3/4" of space between the pully and the rad.
I can't find a electric with less than 2 3/4" depth. I have a 16" flex fan and 2 electric in front pushing. 12" and a 14" fan in front of the air-condenser. In traffic it starts to climb to about 220 degrees. If the outside temp are in the 60's it will stay below 210. I am thinking of maybe side drafting electrics on angles and blow on the inner fenders. The 2 3/4 is the water pump pulley, the air conditioner compressor sticks out further.

*Ozona* · 11-23-2007, 09:20 AM

LWP will not work on a big block truck with the mounts in the bbc position.

You shouldn't have any overheating problems with a 4 core and a dual electric fans with a SWP. If you do, something isn't right.

I have a 509" with a 4 core $200 radiator in it, and a derale dual electric fan. 180 degrees...period.

I have an auxillary cooler for my trans, trans loop is Trans->Auxillary->Radiator-> External Filter-> Trans. If you have a built trans going into the radiator first...it will get too hot.

hope this helps.

Olden Days · 11-23-2007, 12:41 PM

Long water pump on BB in stock location does fit on mine. I come up with the same measurment as dwaite72lnghrn. I just went searching for a clutch fan that was the right length and found one that leaves the fan about 3/4 inches clearence from rad. I dont like it that close though and there is a little overheating issues when using ac in slow traffic. I plan on changing to electric fans. You likely wont find an electric fan that would have the clearance to sit in the middle of the rad, but using 2 side by side will work and that is my plan when I get around to it.

FRENCHBLUE72 · 11-23-2007, 12:59 PM

Wes at classic heartbeat has a sweet dual fan set-up that I have been eyeing for this project..

chevy72blu · 11-23-2007, 01:45 PM

Anyone have any idea what the difference will be in rad clearance between a SWP and LWP? I have a 5600 cfm flexalite dual electric setup that just wont quite clear with my Edelbrock victor series LWP.

11-22-2007, 08:34 PM	#1
71Rat ran out of money Join Date: Apr 2003 Location: northern, NJ Posts: 925	Water pump question on BBC I was wondering if a Long Water Pump would work on a BBC with 72 style mounts on our trucks? I figured shorts came with the truck but i was wondering if i would run into clearance problems with a long pump. Thanks for any input 71rat __________________ Modify everything, leave nothing alone!~

11-22-2007, 10:35 PM	#2
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,650	Re: Water pump question on BBC electric fans.

11-22-2007, 10:43 PM	#3
FRENCHBLUE72 PROJECT 7DEUCE Join Date: Dec 2002 Location: GRANTS PASS OR Posts: 21,606	Re: Water pump question on BBC Im running a lwp but have yet to get to the cooling part of the equation.. __________________ 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..

11-22-2007, 10:44 PM	#4
1LIME69 Registered User Join Date: Nov 2006 Location: Alexis, NC Posts: 182	Re: Water pump question on BBC I dont think it will. I have a bbc with a long water pump in my 69 with the tubular motor mounts and I have shifted the engine back 1 in and I barely have enough room for my electric fan.

11-23-2007, 12:16 AM	#5
clay68c10 Senior Member Join Date: Aug 2004 Location: Centennial, CO Posts: 2,991	Re: Water pump question on BBC I re-sold a serpentine belt setup since it put the wp hub too close to the radiator. I would have had to pull the rad to get the pulley off. __________________ ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ

11-23-2007, 06:10 AM	#6
71Rat ran out of money Join Date: Apr 2003 Location: northern, NJ Posts: 925	Re: Water pump question on BBC thanks everyone for the input __________________ Modify everything, leave nothing alone!~

11-23-2007, 06:15 AM	#7
dwaite72lnghrn Registered User Join Date: Jun 2002 Location: central pa Posts: 1,525	Re: Water pump question on BBC You will have about 2 3/4" of space between the pully and the rad. I can't find a electric with less than 2 3/4" depth. I have a 16" flex fan and 2 electric in front pushing. 12" and a 14" fan in front of the air-condenser. In traffic it starts to climb to about 220 degrees. If the outside temp are in the 60's it will stay below 210. I am thinking of maybe side drafting electrics on angles and blow on the inner fenders. The 2 3/4 is the water pump pulley, the air conditioner compressor sticks out further. Attached Images __________________ 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; 11-23-2007 at 06:21 AM. Reason: additions.

11-23-2007, 09:20 AM	#8
Ozona Account Suspended Join Date: Jan 2006 Location: Fort Worth Posts: 155	Re: Water pump question on BBC LWP will not work on a big block truck with the mounts in the bbc position. You shouldn't have any overheating problems with a 4 core and a dual electric fans with a SWP. If you do, something isn't right. I have a 509" with a 4 core $200 radiator in it, and a derale dual electric fan. 180 degrees...period. I have an auxillary cooler for my trans, trans loop is Trans->Auxillary->Radiator-> External Filter-> Trans. If you have a built trans going into the radiator first...it will get too hot. hope this helps. Last edited by Ozona; 11-23-2007 at 09:21 AM.

11-23-2007, 12:41 PM	#9
Olden Days Living In The Past Join Date: Nov 2003 Location: Rockies Posts: 709	Re: Water pump question on BBC Long water pump on BB in stock location does fit on mine. I come up with the same measurment as dwaite72lnghrn. I just went searching for a clutch fan that was the right length and found one that leaves the fan about 3/4 inches clearence from rad. I dont like it that close though and there is a little overheating issues when using ac in slow traffic. I plan on changing to electric fans. You likely wont find an electric fan that would have the clearance to sit in the middle of the rad, but using 2 side by side will work and that is my plan when I get around to it.

11-23-2007, 12:59 PM	#10
FRENCHBLUE72 PROJECT 7DEUCE Join Date: Dec 2002 Location: GRANTS PASS OR Posts: 21,606	Re: Water pump question on BBC Wes at classic heartbeat has a sweet dual fan set-up that I have been eyeing for this project.. __________________ 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..

11-23-2007, 01:45 PM	#11
chevy72blu Registered User Join Date: Apr 2004 Location: Las Vegas, NV Posts: 2,188	Re: Water pump question on BBC Anyone have any idea what the difference will be in rad clearance between a SWP and LWP? I have a 5600 cfm flexalite dual electric setup that just wont quite clear with my Edelbrock victor series LWP. __________________ RIP EastSideLowLife '72 C20 SWB convert. 5 lug, LS1/4l60e

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.