Short Water pump connections - The 1947 - Present Chevrolet & GMC Truck Message Board Network

angelsairman · 02-14-2004, 01:00 AM

OK guys...heres another of my stupid questions, BTW you guys have been a great help in this project

thanks!! OK hre goes, on a short water pump on a 71 C10 1/2 ton 2WD wit a 350 i noticed that the water pump has two threaded holes, now i know one of them and im assuming the top one is for the heater core hose, but what is the bottom one for?? and if its not used can i just plug it??? Ive attached a labeled picture so hopefully it will make it easier to explain. Thanks in advance

Longhorn Man · 02-14-2004, 01:04 AM

I would personaly plug the top one and run the heater from the side, it would keep the hose off the top of the engine and give a less cluttered look.

dwaite72lnghrn · 02-14-2004, 09:35 AM

The water pump is for a late model SBC. the top is for the intake manifold. I went through this with my sons car, Thought OK just plug the top get it all bolted on and painted orange and then none of the pulleys would mount as the shaft is larger than what was on the original 283 so I did not have the time to get a new set of pulleys so I picked up a rebuilt for his car.
If this is all new and you will be running new pulleys just plug the top Big thing there is trying to find the aluminum plug for it so it will look good.

walker · 02-14-2004, 11:04 AM

My stock '67 WP was the same way. The top went to a bypass fitting on the t-stat and the side one went to the heater core. I just plugged the top one and ran the heater core on the side one.

FRENCHBLUE72 · 02-14-2004, 12:35 PM

I would plug port A and run the heater hose in to port B..

02-14-2004, 01:00 AM	#1
angelsairman Future Owner Join Date: Jul 2003 Location: Grand Forks AFB, ND Posts: 151	Short Water pump connections OK guys...heres another of my stupid questions, BTW you guys have been a great help in this project thanks!! OK hre goes, on a short water pump on a 71 C10 1/2 ton 2WD wit a 350 i noticed that the water pump has two threaded holes, now i know one of them and im assuming the top one is for the heater core hose, but what is the bottom one for?? and if its not used can i just plug it??? Ive attached a labeled picture so hopefully it will make it easier to explain. Thanks in advance Attached Images __________________ Its not the end result that counts most...its the journey along the way that's most rewarding My truck doesn't leak, it just marks it's territory

02-14-2004, 09:35 AM	#3
dwaite72lnghrn Registered User Join Date: Jun 2002 Location: central pa Posts: 1,525	The water pump is for a late model SBC. the top is for the intake manifold. I went through this with my sons car, Thought OK just plug the top get it all bolted on and painted orange and then none of the pulleys would mount as the shaft is larger than what was on the original 283 so I did not have the time to get a new set of pulleys so I picked up a rebuilt for his car. If this is all new and you will be running new pulleys just plug the top Big thing there is trying to find the aluminum plug for it so it will look good. __________________ 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

02-14-2004, 11:04 AM	#4
walker Registered User Join Date: Jul 2003 Location: north of Phx AZ about 30 miles Posts: 698	My stock '67 WP was the same way. The top went to a bypass fitting on the t-stat and the side one went to the heater core. I just plugged the top one and ran the heater core on the side one. __________________ Andy,Phx AZ '67 C-10 (Ahhh, done at last. Well there is that disk front end I want to put in and...) "23 C-Cab-sold '48 Ford 8N tractor(still working) '67 Scout(Now on the road) '70 MG B.-sold

02-14-2004, 12:35 PM	#5
FRENCHBLUE72 PROJECT 7DEUCE Join Date: Dec 2002 Location: GRANTS PASS OR Posts: 21,606	I would plug port A and run the heater hose in to port B.. __________________ 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..

02-14-2004, 01:04 AM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	I would personaly plug the top one and run the heater from the side, it would keep the hose off the top of the engine and give a less cluttered look.



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