Calling all 351W guys-Please help identify which water pump I have

Stang_ROTY · 07-27-2001, 07:10 PM

I am having problems with the car overheating and pushing water back out through the radiator after about 2 minutes of idling. I am using what I hope is a 302 5.0 water pump on a '69 block. I's supposed to be reverse rotation. the part number for a standard rotation is 8843 and the reverse rotation is 8840. The reverse rotation is for a serpentine setup which I am using. How can I check to make sure my water pump is a reverse rotation and not that standard. I'm thinking maybe Summit sent me the wrong pump. It's either that or the pulley'a and/or thermostat, right?

------------------
Finally DONE!!
93 GT, 393 stroker w/ Edlebrock Performer heads and EFI, 30lb injectors, Dynamic Roller Mite C4, 8 pt cage, Sothside Machine bars & Sub-frames, 3.73's, '69 351W block w/SCAT crank.

fastfords66stang · 01-26-2005, 09:20 PM

this is guest a red neck suggestion take the theromstat out and remove antifreeze run a long tube from your pump to a bucket of water and swap around until you find which way it's flowing. dont let the engine get hot. thats why we take out the theromstat out so you want have to get it hot to open.

Ieatcamaros · 01-26-2005, 10:00 PM

Your water pump should be turning counter clockwise, is it?

tarmon8r · 01-27-2005, 07:31 PM

if you pull the back of the water pump off. you will be able to see the impeller... spin the shaft counterclock wise and are the impellers spinning the right direction..and I would get a new radiator cap.. Cheap, and you wouldnt believe how such a little things effects the cooling system like a bad radiator cap. Blows off prior to the actual design pressure of the cooling system... peace..

Ieatcamaros · 01-27-2005, 10:11 PM

I just noticed that this thread was brought back from 2001. OOPS.

07-27-2001, 07:10 PM	#1
Stang_ROTY Registered Member Join Date: Feb 2001 Location: Berkshire County - Massachusetts Posts: 735	Calling all 351W guys-Please help identify which water pump I have I am having problems with the car overheating and pushing water back out through the radiator after about 2 minutes of idling. I am using what I hope is a 302 5.0 water pump on a '69 block. I's supposed to be reverse rotation. the part number for a standard rotation is 8843 and the reverse rotation is 8840. The reverse rotation is for a serpentine setup which I am using. How can I check to make sure my water pump is a reverse rotation and not that standard. I'm thinking maybe Summit sent me the wrong pump. It's either that or the pulley'a and/or thermostat, right? ------------------ Finally DONE!! 93 GT, 393 stroker w/ Edlebrock Performer heads and EFI, 30lb injectors, Dynamic Roller Mite C4, 8 pt cage, Sothside Machine bars & Sub-frames, 3.73's, '69 351W block w/SCAT crank.

01-26-2005, 09:20 PM	#2
fastfords66stang Registered Member Join Date: Jan 2005 Location: Anderson S.C. Posts: 4	Re: Calling all 351W guys-Please help identify which water pump I have this is guest a red neck suggestion take the theromstat out and remove antifreeze run a long tube from your pump to a bucket of water and swap around until you find which way it's flowing. dont let the engine get hot. thats why we take out the theromstat out so you want have to get it hot to open.

01-26-2005, 10:00 PM	#3
Ieatcamaros Domestic Rice really sucks! Join Date: Apr 2002 Location: KY Posts: 973	Re: Calling all 351W guys-Please help identify which water pump I have Your water pump should be turning counter clockwise, is it? __________________ The sig says it all.

01-27-2005, 07:31 PM	#4
tarmon8r Registered Member Join Date: Jun 2002 Location: manassas, va Posts: 186	Re: Calling all 351W guys-Please help identify which water pump I have if you pull the back of the water pump off. you will be able to see the impeller... spin the shaft counterclock wise and are the impellers spinning the right direction..and I would get a new radiator cap.. Cheap, and you wouldnt believe how such a little things effects the cooling system like a bad radiator cap. Blows off prior to the actual design pressure of the cooling system... peace.. __________________ 1983 mustang, 393 cubic inch stroker small block, victor jr heads and intake, gold race 1.6 roller rockers. comp cam 304, 244@ .050. .576" hydralic retro roller cam,lunati rods. block was o-ringed,10:1 forged pistons, speed pro fit fit rings, clevite bearings,msd distributor and igniton,be cool huge radiator, black lite electric fan, march underdrive pulleys, mildon deep sump oil pan, mac 1 3.4" long tube headers, 3" dr gas x-pipe and mac exhaust,ARP bolts. car weighs 2900 lbs w/out driver, sub frames, weld wheels, mickey thompson sportsman pro 26 x 10.5 x 15's,#8 fuel line steel braided

01-27-2005, 10:11 PM	#5
Ieatcamaros Domestic Rice really sucks! Join Date: Apr 2002 Location: KY Posts: 973	Re: Calling all 351W guys-Please help identify which water pump I have I just noticed that this thread was brought back from 2001. OOPS. __________________ The sig says it all.

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