V6 to V8 swap water pump

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AquaAngel
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V6 to V8 swap water pump

Post by AquaAngel » Fri Apr 06, 2012 3:44 pm

This might be a silly question, but i will soon work on my new motor and on this process, i will be putting back my accessory bracket from my v6 to my V8 and i just found out that the water pump that i bought for the V8 rotates counter clock wise while my v6 is clockwise.

the big question is, can i use a water pump off a v6 onto a v8 350?

Thanks
93 Astro Van army blue [V8/350/5.7L]
------------

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93 Astro cargo Van "Phantom Rebel"
98 GMC Safari AWD
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Re: V6 to V8 swap water pump

Post by 1Gary » Fri Apr 06, 2012 3:51 pm

Why don't you just return the wrong pump for the right one??.
1979 Malibu drag race only car
1999 Sonoma 4.3 5 speed-Rufus
1989 Astro-Ole Yellar cancelled-still selling off parts
1985 Astro-shop van R.I.P. my friend
1994 Astro LT RWD W4.3 rod knock RIP
1982 Winnebago single rear wheel-Chevy 350 Scraped 1/28/13-broken dreams......


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Re: V6 to V8 swap water pump

Post by Kidhauler » Fri Apr 06, 2012 11:42 pm

A v6 pump will fit
1999 Safari Touring edition.
trailer tow pack with a 3:73 posi
Bucket bench seats, Rear heat, Rear Airconditioning.
teal green
300 000 kms
AirRide air bags in the rear to fix soft stock suspension.
Onboard aircompressor to make it all work nice.

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Re: V6 to V8 swap water pump

Post by 1Gary » Sat Apr 07, 2012 10:34 am

If the engine you have requires a reverse rotation W/P,you can't run a normal rotation W/P on it.
1979 Malibu drag race only car
1999 Sonoma 4.3 5 speed-Rufus
1989 Astro-Ole Yellar cancelled-still selling off parts
1985 Astro-shop van R.I.P. my friend
1994 Astro LT RWD W4.3 rod knock RIP
1982 Winnebago single rear wheel-Chevy 350 Scraped 1/28/13-broken dreams......


Rochester,NY

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AquaAngel
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Re: V6 to V8 swap water pump

Post by AquaAngel » Sun Apr 15, 2012 6:28 pm

Mix review, so if it is reversed, can i fool around with the belt to make it work in reverse?
93 Astro Van army blue [V8/350/5.7L]
------------

Chevy owned:
93 Astro cargo Van "Phantom Rebel"
98 GMC Safari AWD
09 GMC C5500 6.6L, Duramax "3 ton truck"

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Re: V6 to V8 swap water pump

Post by LiftedAWDAstro » Sun Apr 15, 2012 9:38 pm

I wouldn't risk it. Water pumps are so cheap new, why mess with what works?
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1995 Astro 2WD conversion 4.11 posi, shift kit, DHC rock rails - sold to Skippy
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Kidhauler
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Re: V6 to V8 swap water pump

Post by Kidhauler » Mon Apr 16, 2012 2:35 am

A 4.3 v6 is the same engine as a 350v8 just with 2 cylinders cut off. So the direction of water would make no difference would it? If you use the v6 accesories and brackets then use the v6 pump they should pump the same amount of water. The big thing to watch is that you use the right fan for the direction of rotation. We accidently put a v8 fan on v6 pulleys and it blew air out the front of rad. The van was fine on the highway and stop and go traffic but at city speeds the van would over heat. Once the fan was put back every thing was fine and that truck had a v6 pump on a v8.
1999 Safari Touring edition.
trailer tow pack with a 3:73 posi
Bucket bench seats, Rear heat, Rear Airconditioning.
teal green
300 000 kms
AirRide air bags in the rear to fix soft stock suspension.
Onboard aircompressor to make it all work nice.

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Re: V6 to V8 swap water pump

Post by 1Gary » Mon Apr 16, 2012 3:54 am

KH-the water jackets are configured different on reverse rotation engines.
1979 Malibu drag race only car
1999 Sonoma 4.3 5 speed-Rufus
1989 Astro-Ole Yellar cancelled-still selling off parts
1985 Astro-shop van R.I.P. my friend
1994 Astro LT RWD W4.3 rod knock RIP
1982 Winnebago single rear wheel-Chevy 350 Scraped 1/28/13-broken dreams......


Rochester,NY

Kidhauler
I sleep in my van
Posts: 881
Joined: Thu Sep 14, 2006 12:46 am
How many wheels are on an Astro van? (4): 6
Location: Vancouver B.C.

Re: V6 to V8 swap water pump

Post by Kidhauler » Mon Apr 16, 2012 4:08 am

It's a centrifugal pump it sucks from one side and blows out the other it shouldn't matter which way the pump spins I have put a v6 pump on a v8 that origionaly spun the other way and that engine still runs fine today and that had to be 5 years ago.
1999 Safari Touring edition.
trailer tow pack with a 3:73 posi
Bucket bench seats, Rear heat, Rear Airconditioning.
teal green
300 000 kms
AirRide air bags in the rear to fix soft stock suspension.
Onboard aircompressor to make it all work nice.

User avatar
1Gary
I have my van tatooed on my cheeks
Posts: 2795
Joined: Wed Oct 07, 2009 11:18 am
antispam: No
How many wheels are on an Astro van? (4): 4

Re: V6 to V8 swap water pump

Post by 1Gary » Mon Apr 16, 2012 4:38 am

The valve seat cooling is where the difference is.

To be more exact,the coolant passages design and direction effects the cooling of the exhaust valve seats.GM did this as a upgrade.
1979 Malibu drag race only car
1999 Sonoma 4.3 5 speed-Rufus
1989 Astro-Ole Yellar cancelled-still selling off parts
1985 Astro-shop van R.I.P. my friend
1994 Astro LT RWD W4.3 rod knock RIP
1982 Winnebago single rear wheel-Chevy 350 Scraped 1/28/13-broken dreams......


Rochester,NY

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AquaAngel
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Re: V6 to V8 swap water pump

Post by AquaAngel » Sat Apr 21, 2012 1:36 am

Thanks for replies

yes i will be using the acc bracket off my v6 to put on the V8.
As for the cooling Fan? i will be using an Electric Fan as i will need more room to work on the rad or water pump if it ever fails. so the Clutch fan and all will be gone and will put an Electric one in it.

Plus i will be lifting the body for another 2 inches, so the Fan Shroud will have to be cut. So i am not worried about putting the Cooling fan back in it.
93 Astro Van army blue [V8/350/5.7L]
------------

Chevy owned:
93 Astro cargo Van "Phantom Rebel"
98 GMC Safari AWD
09 GMC C5500 6.6L, Duramax "3 ton truck"

User avatar
AquaAngel
I finally get the smurf thing
Posts: 150
Joined: Fri Apr 22, 2011 4:48 am
antispam: No
How many wheels are on an Astro van? (4): 4
Location: Nanaimo, Bc, Canada
Contact:

Re: V6 to V8 swap water pump

Post by AquaAngel » Sat Apr 21, 2012 1:40 am

1Gary wrote:Why don't you just return the wrong pump for the right one??.
I can do that, i just want to make sure that the W/P deliver the pressure that the motor need for cooling as i can read a lot of comment here about it, but i will definitely try the V8 W/p going Clockwise
93 Astro Van army blue [V8/350/5.7L]
------------

Chevy owned:
93 Astro cargo Van "Phantom Rebel"
98 GMC Safari AWD
09 GMC C5500 6.6L, Duramax "3 ton truck"

Kidhauler
I sleep in my van
Posts: 881
Joined: Thu Sep 14, 2006 12:46 am
How many wheels are on an Astro van? (4): 6
Location: Vancouver B.C.

Re: V6 to V8 swap water pump

Post by Kidhauler » Sat Apr 21, 2012 3:49 am

The electric fan is also good for a gain of aprox 15-20 hp depending on the number of fan blades.
1999 Safari Touring edition.
trailer tow pack with a 3:73 posi
Bucket bench seats, Rear heat, Rear Airconditioning.
teal green
300 000 kms
AirRide air bags in the rear to fix soft stock suspension.
Onboard aircompressor to make it all work nice.

User avatar
AquaAngel
I finally get the smurf thing
Posts: 150
Joined: Fri Apr 22, 2011 4:48 am
antispam: No
How many wheels are on an Astro van? (4): 4
Location: Nanaimo, Bc, Canada
Contact:

Re: V6 to V8 swap water pump

Post by AquaAngel » Tue May 15, 2012 1:20 am

Just got the fan this week end and it is a 10 Blade, 16" electric fan, the van will soon be of the road as the motor is almost ready.
93 Astro Van army blue [V8/350/5.7L]
------------

Chevy owned:
93 Astro cargo Van "Phantom Rebel"
98 GMC Safari AWD
09 GMC C5500 6.6L, Duramax "3 ton truck"

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