help with 1959 gm water pump, or what it really is? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mog797 · 10-04-2014, 04:57 AM

Ok so the pump in question came with my 1959 gmc with 270 engine. One of my questions is this Pump from Canada reason I ask that is cause I am told US pumps have two holes on the back side. So if it's from Canada how do I get a replacement I am having hard enough time with that to start I would prefer to get one with pulley attached as again I hear it can be channeling to get done ones self. Anyway just trying to figure out what I have and then what to do.

Thanks!

mog797 · 10-07-2014, 06:25 AM

Really I can't get one response on what pump I am looking for or any help on this. At this point I might as well just scrap the engine if I don't get a water pump it's of no use to me...

mphudak · 10-07-2014, 07:17 AM

I'd suggest posting/searching over on oldgmctruck.com. There are a number of guys over there from canada and know them inside/out and what is different from US trucks. The limited knowledge I have was thinking GMC's came w/chevy motors.

edit...a quick search and all i am seeing for the 270 is a single hole in the block. They could be the same.

dwcsr · 10-07-2014, 11:14 AM

GMC engine was a one hole pump. Chevy 216 was a two hole pump they do not interchange.

Check with www.stovebolt.com
http://www.langdonsstovebolt.com/
http://www.capitolsupply.com/gov/cat...cs7686969.html

or napa http://www.napaonline.com/Catalog/Ca...012_0267412122

NAPA pump number is
WP 598012

northerngmc · 10-07-2014, 11:25 AM

Canadian GMC trucks came with Chev engines, so a 235 I6 or a 283 V8 in a 59 GMC.

mog797 · 10-07-2014, 09:11 PM

Thanks all maybe I got on some page looking at Chevy pumps, not gmc... any ideas where I can find a pump I have a 3/8in. pulley.
Thanks for setting me straight. When I get the water pump I can try to get this thing to run again.

mgchevyparts · 10-07-2014, 11:04 PM

What's wrong with your pump? Just have it rebuilt.

mog797 · 10-08-2014, 12:18 AM

Well when I got the pickup it was off and had been for a while... The guy I got it from had a lot of random things going on that have no rime or reason. But I finally got the screws out of the old pump and took pull off might just go through this one and use it.

tinyjaime · 10-09-2014, 05:35 AM

My book shows that a water pump with the casting number 598309 came from 1937-1940 216 CID truck with 85 hp. I thought GMC used Pontiac motors.

My book only does Chevy Inline 6 Engines so can not go much further

mog797 · 10-10-2014, 07:40 PM

Anyone have any ideas on where I can find a gasket for backing plate also the screws that hold on the backing plate I would like to go with a different head other then slotted they gave me lots of problems removing them. Ok the last thing for now on this is the gasket used between backing plate and block. I have seen some of this stuff online at eBay but shipping is way more then the part last time I checked it doesn't take $15 for 2 stamps!

Again thanks in advance!

mphudak · 10-10-2014, 07:45 PM

May have to buy gasket material and make your own. Maybe use something like "right stuff" instead of gaskets. No suggestions on screws/bolts other then what you pulled out and using antisieze. Think about the fact that they are likely 55+ yrs old....maybe a pain but likely wnot be changed again in your lifetime.

Old Truck Man · 10-10-2014, 07:51 PM

Don't give up on that GMC engine. they have full pressure bearings are about a 1 and 1/2 inches longer than the chev 6 cyl. Forged zollinger pistons and are tougher than the chev. Lots of info about them on the HAMB. Get a piece of gasket material and make a gasket coat both sides with perma tex and you will be fine.

mog797 · 11-15-2014, 02:54 PM

Well got new gaskets and screws off of the old internet. Was more then I would have liked to spend but pump is on and holds water good. Thanks everyone!

10-04-2014, 04:57 AM	#1
mog797 Registered User Join Date: Nov 2012 Location: Fountain, CO Posts: 40	help with 1959 gm water pump, or what it really is? Ok so the pump in question came with my 1959 gmc with 270 engine. One of my questions is this Pump from Canada reason I ask that is cause I am told US pumps have two holes on the back side. So if it's from Canada how do I get a replacement I am having hard enough time with that to start I would prefer to get one with pulley attached as again I hear it can be channeling to get done ones self. Anyway just trying to figure out what I have and then what to do. Thanks! Attached Images

10-07-2014, 06:25 AM	#2
mog797 Registered User Join Date: Nov 2012 Location: Fountain, CO Posts: 40	Re: help with 1959 gm water pump, or what it really is? Really I can't get one response on what pump I am looking for or any help on this. At this point I might as well just scrap the engine if I don't get a water pump it's of no use to me...

10-07-2014, 07:17 AM	#3
mphudak Registered User Join Date: Jan 2011 Location: Canton, GA Posts: 196	Re: help with 1959 gm water pump, or what it really is? I'd suggest posting/searching over on oldgmctruck.com. There are a number of guys over there from canada and know them inside/out and what is different from US trucks. The limited knowledge I have was thinking GMC's came w/chevy motors. edit...a quick search and all i am seeing for the 270 is a single hole in the block. They could be the same. __________________ 55.1 GMC Suburban Hydramatic

10-07-2014, 11:14 AM	#4
dwcsr Hollister Road Co. Join Date: Apr 2005 Location: Houston Posts: 6,134	Re: help with 1959 gm water pump, or what it really is? GMC engine was a one hole pump. Chevy 216 was a two hole pump they do not interchange. Check with www.stovebolt.com http://www.langdonsstovebolt.com/ http://www.capitolsupply.com/gov/cat...cs7686969.html or napa http://www.napaonline.com/Catalog/Ca...012_0267412122 NAPA pump number is WP 598012

10-07-2014, 11:25 AM	#5
northerngmc Registered User Join Date: Jan 2004 Location: Whitehorse YK Canada Posts: 2,651	Re: help with 1959 gm water pump, or what it really is? Canadian GMC trucks came with Chev engines, so a 235 I6 or a 283 V8 in a 59 GMC. __________________ Blaine 59 GMC 9314 a.k.a. Whoopee 68 C20 50th Anniversary a.k.a. The Rat http://www.flickr.com/photos/northerngmc/ http://www.members.tripod.com/P-wee/index_032.htm 1.61803 is one H of a lot better than 3.14159, no really it is!

10-07-2014, 09:11 PM	#6
mog797 Registered User Join Date: Nov 2012 Location: Fountain, CO Posts: 40	Re: help with 1959 gm water pump, or what it really is? Thanks all maybe I got on some page looking at Chevy pumps, not gmc... any ideas where I can find a pump I have a 3/8in. pulley. Thanks for setting me straight. When I get the water pump I can try to get this thing to run again.

10-07-2014, 11:04 PM	#7
mgchevyparts Registered User Join Date: Feb 2013 Location: Upland, Calif Posts: 698	Re: help with 1959 gm water pump, or what it really is? What's wrong with your pump? Just have it rebuilt. __________________ 1957 CHEVY 1/2 TON SHORT BED 1940 FORD 1/2 TON SHORT BED

10-08-2014, 12:18 AM	#8
mog797 Registered User Join Date: Nov 2012 Location: Fountain, CO Posts: 40	Re: help with 1959 gm water pump, or what it really is? Well when I got the pickup it was off and had been for a while... The guy I got it from had a lot of random things going on that have no rime or reason. But I finally got the screws out of the old pump and took pull off might just go through this one and use it.

10-09-2014, 05:35 AM	#9
tinyjaime Registered User Join Date: Sep 2012 Location: Henderson Nevada Posts: 76	Re: help with 1959 gm water pump, or what it really is? My book shows that a water pump with the casting number 598309 came from 1937-1940 216 CID truck with 85 hp. I thought GMC used Pontiac motors. My book only does Chevy Inline 6 Engines so can not go much further

10-10-2014, 07:40 PM	#10
mog797 Registered User Join Date: Nov 2012 Location: Fountain, CO Posts: 40	Re: help with 1959 gm water pump, or what it really is? Anyone have any ideas on where I can find a gasket for backing plate also the screws that hold on the backing plate I would like to go with a different head other then slotted they gave me lots of problems removing them. Ok the last thing for now on this is the gasket used between backing plate and block. I have seen some of this stuff online at eBay but shipping is way more then the part last time I checked it doesn't take $15 for 2 stamps! Again thanks in advance!

10-10-2014, 07:45 PM	#11
mphudak Registered User Join Date: Jan 2011 Location: Canton, GA Posts: 196	Re: help with 1959 gm water pump, or what it really is? May have to buy gasket material and make your own. Maybe use something like "right stuff" instead of gaskets. No suggestions on screws/bolts other then what you pulled out and using antisieze. Think about the fact that they are likely 55+ yrs old....maybe a pain but likely wnot be changed again in your lifetime. __________________ 55.1 GMC Suburban Hydramatic

10-10-2014, 07:51 PM	#12
Old Truck Man Registered User Join Date: Feb 2014 Location: Pocahontas Arkansas Posts: 684	Re: help with 1959 gm water pump, or what it really is? Don't give up on that GMC engine. they have full pressure bearings are about a 1 and 1/2 inches longer than the chev 6 cyl. Forged zollinger pistons and are tougher than the chev. Lots of info about them on the HAMB. Get a piece of gasket material and make a gasket coat both sides with perma tex and you will be fine.

11-15-2014, 02:54 PM	#13
mog797 Registered User Join Date: Nov 2012 Location: Fountain, CO Posts: 40	Re: help with 1959 gm water pump, or what it really is? Well got new gaskets and screws off of the old internet. Was more then I would have liked to spend but pump is on and holds water good. Thanks everyone!



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