Long or short water pump - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**FL71C10** · 12-18-2010, 02:25 PM

I have a mid 70's impala 350 with a turbo 350 to put in my truck. It has all accessories on it, and I'd like to find out if I'm going to have clearance issues with the water pump. Is this a long water pump or short? If it's long, can I use it in my truck?

If not, I then have to get all new brackets and pulleys? Here are a couple pics of the motor.

Thanks!

Allensracing · 12-18-2010, 02:28 PM

thats a long water pump. it will fit

**Classic Heartbeat** · 12-18-2010, 02:39 PM

Long water pump, It will fit under the hood, however you will have to modify the headlight harness because the alternator is on the R/H side of the motor. You will also have to make a new fan shroud or convert to electric fans. WES

**FL71C10** · 12-18-2010, 05:31 PM

Will the fan shroud hit the fan? Is that why I will need a new one?

Allensracing · 12-18-2010, 05:37 PM

well, what does your truck have in it now? V8 or l6?
if its a V8, is it a long or short pump?

**FL71C10** · 12-18-2010, 06:06 PM

Originally v8 auto, I bought it with no motor or front end
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**Classic Heartbeat** · 12-18-2010, 06:38 PM

The fan sticks too far out from the engine to use a stock shroud. I don't know whether or not it will hit the shoud or not, however it will set too far inside. WES

**FL71C10** · 12-18-2010, 07:13 PM

So you dont think it will hit the radiator, but maybe the shroud will not be right?

Maybe I should just get short wp and associated parts.

Allensracing · 12-18-2010, 07:26 PM

if it comes to close to the radiator, you can change the fan clutch.
a small block with a long pump is shorter than a big block with a short pump

57larry · 12-18-2010, 07:44 PM

no question, it's a long one

**FL71C10** · 12-18-2010, 08:35 PM

Quote:

Originally Posted by Allensracing

if it comes to close to the radiator, you can change the fan clutch.
a small block with a long pump is shorter than a big block with a short pump

Do you think a big block shroud would work?
Posted via Mobile Device

**WIDESIDE72** · 12-18-2010, 11:41 PM

I believe that the clutch fan is a bigger diameterthan the stock fan shroud opening as well.

**FL71C10** · 12-18-2010, 11:46 PM

OK, so I guess I'm in the market for new engine brackets and pulleys!

Allensracing · 12-19-2010, 12:15 AM

its easier to get a aftermarket fan and a spacer to make it all work

**FL71C10** · 12-19-2010, 12:21 AM

So I could keep the brackets etc and just get an new fan?

Allensracing · 12-19-2010, 12:23 AM

I would stick with the long pump and brackets, but someone else might have a better reason to change.

Jacfourteen · 12-19-2010, 01:02 AM

yep its a long w/p, it can be made to work like stated above.

GASoline71 · 12-19-2010, 11:26 AM

Quote:

Originally Posted by Allensracing

I would stick with the long pump and brackets, but someone else might have a better reason to change.

Like Wes said earlier... then you're gonna have to reroute your alternator wires over to the passenger side. These trucks all came with alternators/wires on the drivers side...

Gary

Allensracing · 12-19-2010, 04:01 PM

Quote:

Originally Posted by GASoline71

Like Wes said earlier... then you're gonna have to reroute your alternator wires over to the passenger side. These trucks all came with alternators/wires on the drivers side...

Gary

I certainly would not spend the money to buy a complete short water pump and pulleys and brackets to avoid moving the alternator wires or to line up a fan shroud.

I would go to the trouble to change over if your wanting a factory correct appearing truck.
you will have plent of space to work with, and a few minor details to make it work with a long pump. it will be a whole lot easier to find replacement parts later if you use the long pump.
it will look more era correct with a short pump.

Tx Firefighter · 12-19-2010, 05:38 PM

I've always just dropped a long pump engine in place on to the 6 cylinder type of engine stands. That sets the engine back a bit further to compensate for the longer front accessories.

**FL71C10** · 12-19-2010, 06:02 PM

Quote:

Originally Posted by Tx Firefighter

I've always just dropped a long pump engine in place on to the 6 cylinder type of engine stands. That sets the engine back a bit further to compensate for the longer front accessories.

Will my hei distributor clear the firewall that way?
Posted via Mobile Device

Tx Firefighter · 12-19-2010, 06:14 PM

Yes it will clear fine. There's still enough clearance to allow removing and reinstalling the HEI if needed.

**FL71C10** · 05-24-2011, 05:58 PM

How far should the fan be from the radiator?

**FL71C10** · 05-25-2011, 12:11 AM

anyone?

12-18-2010, 02:25 PM	#1
FL71C10 Senior Member Join Date: Jun 2010 Location: Orlando, Florida Posts: 2,508	Long or short water pump I have a mid 70's impala 350 with a turbo 350 to put in my truck. It has all accessories on it, and I'd like to find out if I'm going to have clearance issues with the water pump. Is this a long water pump or short? If it's long, can I use it in my truck? If not, I then have to get all new brackets and pulleys? Here are a couple pics of the motor. Thanks! Attached Images __________________ 71 Chevy C10 Shortbed Stepside. LT1 with 4l60E. Just got back from painter, in assembly now. Last edited by FL71C10; 12-18-2010 at 02:26 PM.

12-18-2010, 02:28 PM	#2
Allensracing Registered User Join Date: Dec 2010 Location: Paradise, ca Posts: 295	Re: Long or short water pump thats a long water pump. it will fit __________________

12-18-2010, 02:39 PM	#3
Classic Heartbeat Project Junkie! Fishing Poor!! Join Date: Dec 1999 Location: Olympia,Wa. 98512 Posts: 10,768	Re: Long or short water pump Long water pump, It will fit under the hood, however you will have to modify the headlight harness because the alternator is on the R/H side of the motor. You will also have to make a new fan shroud or convert to electric fans. WES __________________ On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys

12-18-2010, 05:31 PM	#4
FL71C10 Senior Member Join Date: Jun 2010 Location: Orlando, Florida Posts: 2,508	Re: Long or short water pump Will the fan shroud hit the fan? Is that why I will need a new one? __________________ 71 Chevy C10 Shortbed Stepside. LT1 with 4l60E. Just got back from painter, in assembly now.

12-18-2010, 05:37 PM	#5
Allensracing Registered User Join Date: Dec 2010 Location: Paradise, ca Posts: 295	Re: Long or short water pump well, what does your truck have in it now? V8 or l6? if its a V8, is it a long or short pump? __________________

12-18-2010, 06:06 PM	#6
FL71C10 Senior Member Join Date: Jun 2010 Location: Orlando, Florida Posts: 2,508	Re: Long or short water pump Originally v8 auto, I bought it with no motor or front end Posted via Mobile Device __________________ 71 Chevy C10 Shortbed Stepside. LT1 with 4l60E. Just got back from painter, in assembly now.

12-18-2010, 06:38 PM	#7
Classic Heartbeat Project Junkie! Fishing Poor!! Join Date: Dec 1999 Location: Olympia,Wa. 98512 Posts: 10,768	Re: Long or short water pump The fan sticks too far out from the engine to use a stock shroud. I don't know whether or not it will hit the shoud or not, however it will set too far inside. WES __________________ On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys

12-18-2010, 07:13 PM	#8
FL71C10 Senior Member Join Date: Jun 2010 Location: Orlando, Florida Posts: 2,508	Re: Long or short water pump So you dont think it will hit the radiator, but maybe the shroud will not be right? Maybe I should just get short wp and associated parts. __________________ 71 Chevy C10 Shortbed Stepside. LT1 with 4l60E. Just got back from painter, in assembly now.

12-18-2010, 07:26 PM	#9
Allensracing Registered User Join Date: Dec 2010 Location: Paradise, ca Posts: 295	Re: Long or short water pump if it comes to close to the radiator, you can change the fan clutch. a small block with a long pump is shorter than a big block with a short pump __________________

12-18-2010, 07:44 PM	#10
57larry Registered User Join Date: Nov 2007 Location: Indianapolis Posts: 1,161	Re: Long or short water pump no question, it's a long one

12-18-2010, 11:41 PM	#12
WIDESIDE72 Senior Member Join Date: Aug 2008 Location: Cedar Park, Texas Posts: 7,500	Re: Long or short water pump I believe that the clutch fan is a bigger diameterthan the stock fan shroud opening as well.

12-18-2010, 11:46 PM	#13
FL71C10 Senior Member Join Date: Jun 2010 Location: Orlando, Florida Posts: 2,508	Re: Long or short water pump OK, so I guess I'm in the market for new engine brackets and pulleys! __________________ 71 Chevy C10 Shortbed Stepside. LT1 with 4l60E. Just got back from painter, in assembly now. Last edited by FL71C10; 12-18-2010 at 11:46 PM.

12-19-2010, 12:15 AM	#14
Allensracing Registered User Join Date: Dec 2010 Location: Paradise, ca Posts: 295	Re: Long or short water pump its easier to get a aftermarket fan and a spacer to make it all work __________________

12-19-2010, 12:21 AM	#15
FL71C10 Senior Member Join Date: Jun 2010 Location: Orlando, Florida Posts: 2,508	Re: Long or short water pump So I could keep the brackets etc and just get an new fan? __________________ 71 Chevy C10 Shortbed Stepside. LT1 with 4l60E. Just got back from painter, in assembly now.

12-19-2010, 12:23 AM	#16
Allensracing Registered User Join Date: Dec 2010 Location: Paradise, ca Posts: 295	Re: Long or short water pump I would stick with the long pump and brackets, but someone else might have a better reason to change. __________________



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12-19-2010, 01:02 AM	#17
Jacfourteen Big Red - Now its a SWB! Join Date: Jun 2009 Location: Oroville, Ca Posts: 1,624	Re: Long or short water pump yep its a long w/p, it can be made to work like stated above. __________________ 68 3/4 ton (Project)-350 Small Block, .030 over, 10:1 comp, 3998993 heads, C3BX edelbrock intake, comp cams XE268, Holley 670 SA, long tube headers, dual flow 40's, E-fan, Alum rad, currently under the knife getting shortened and bagged build thread 41 3/4 ton (wife's)-flatbed, fully restored to original 01 Tahoe LT 4WD (my daily driver)-Magnaflow Muffler, Rollin on 22's 02 Ford Mustang Convertable (Wife's Car)-Flowmaster 50, Clear corners, Intake, sittin on 18's

12-19-2010, 05:38 PM	#20
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: Long or short water pump I've always just dropped a long pump engine in place on to the 6 cylinder type of engine stands. That sets the engine back a bit further to compensate for the longer front accessories. __________________ I'm on the Instagram- @Gearhead_Kevin

12-19-2010, 06:14 PM	#22
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: Long or short water pump Yes it will clear fine. There's still enough clearance to allow removing and reinstalling the HEI if needed. __________________ I'm on the Instagram- @Gearhead_Kevin

05-24-2011, 05:58 PM	#23
FL71C10 Senior Member Join Date: Jun 2010 Location: Orlando, Florida Posts: 2,508	Re: Long or short water pump How far should the fan be from the radiator? __________________ 71 Chevy C10 Shortbed Stepside. LT1 with 4l60E. Just got back from painter, in assembly now.

05-25-2011, 12:11 AM	#24
FL71C10 Senior Member Join Date: Jun 2010 Location: Orlando, Florida Posts: 2,508	Re: Long or short water pump anyone? __________________ 71 Chevy C10 Shortbed Stepside. LT1 with 4l60E. Just got back from painter, in assembly now.

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