Water Pump Re-builders here at SYC?
 

I am rebuilding the HB 350 out of my 69 Z-11 and I am doing some mild performance mods to the engine while maintaining a stock exterior appearance. Here is the question...is there anyone here who rebuilds water pumps?

I would like the rebuild to incorporate a hi flow impeller. Thanks! [img]<<GRAEMLIN_URL>>/beers.gif[/img]

Re: Water Pump Re-builders here at SYC?
 

Phil
I don't know of anyone here. I and others have good luck with Arthur Gould, fast turn time.
Mike

Water pump

Re: Water Pump Re-builders here at SYC?
 

X2 on Arthur Gould. Good bunch of guys work there. They did a nice job on my small block pump.

Re: Water Pump Re-builders here at SYC?
 

Arthur Gould is the place.

Re: Water Pump Re-builders here at SYC?
 

Another vote for Gould.

Re: Water Pump Re-builders here at SYC?
 

Had mine sent out and rebuilt by Arthur and it works great.

Kurt

Re: Water Pump Re-builders here at SYC?
 

The original 300 HP engine in its stock configuration was pretty tired so I decided 45 years was enough and tore it down. Tired was an understatement. Original cast Nodular Iron crank was pretty much shot and not worth the machine work to repair. The stock pistons and rods were OK but the block needed to be bored .030. Valves/guides in the original heads were shot and to top it off the intake had a chunk of carbon in the underside tray the size of your fist that was cooking the Q-Jet. In other words the typical SB that has been cruised to death for better than 4 decades.

The question was to do a stock rebuild or a performance rebuild. Since I drive the car the answer was obvious. The engine will look 100% stock from all external appearances,- except at idle I think.

1969 HB 350 with TH-350 Tranny.

Pistons 1969 Stock style with Valve reliefs-Keith Black Hypereutectic .030 Pistons.
Eagle I beam Forged rods (Floated)
Original 186 heads converted from 1.94 to 2.02 valves.
1182 LT-1 Steel crank
L-79 cam and lifters
Comp Cams Roller Rockers
21 inch radiator-- original Harrison tanks on a custom 4 core 21 inch middle

Hughes 2000 Stall converter for the TH-350

and now the 692 water pump - with a Hi flow impeller.


Thanks gents... Mr.Gould it is. [img]<<GRAEMLIN_URL>>/beers.gif[/img]

Here is the Radiator modification...Just a tad bit wider.

Re: Water Pump Re-builders here at SYC?
 

Arthur Gould is my pick as well.

Re: Water Pump Re-builders here at SYC?
 

Gould is good.

Re: Water Pump Re-builders here at SYC?
 

Us Corvette folk use Bill Mock and his work is fantastic

Re: Water Pump Re-builders here at SYC?
 

I have a 692 pump with a really rough casting in the date code area, making the code difficult to read. It is definitely in need of a total rebuild, but I think it is salvageable. What are these pumps selling for these days (cores)?

Re: Water Pump Re-builders here at SYC?
 

Personally, I think the 4-core is overkill. The heat rejection from the engine would not be significantly different than a stock engine. Definitely not more than a Z.
Why a hi flow impeller?
186 heads on a HB motor? Interesting.

Re: Water Pump Re-builders here at SYC?
 

I find that interesting too Kurt. #186 heads on a '69 HB 350? I thought both the HA and the HB coded 350's only came with #041's (casting symbol was a right scalene triangle). Just saying.

SAL

Re: Water Pump Re-builders here at SYC?
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 69VN</div><div class="ubbcode-body">I find that interesting too Kurt. #186 heads on a '69 HB 350? I thought both the HA and the HB coded 350's only came with #041's (casting symbol was a right scalene triangle). Just saying.

SAL </div></div>

Sal,

The CRG has an associate member named Alan Colvin who wrote the series &quot;Chevrolet by the numbers&quot; If you have the 1965-1969 copy look at page 102 for usage applications with head 3927186.

It was made with both 1.94/150 or 2.02/160. Lower horse applications like my car got the 1.94/150 from the factory.

Alan's CRG BIO can be found here: http://www.camaros.org/aboutcrg.shtml#Members

Re: Water Pump Re-builders here at SYC?
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Kurt S</div><div class="ubbcode-body">Personally, I think the 4-core is overkill. The heat rejection from the engine would not be significantly different than a stock engine. Definitely not more than a Z.
Why a hi flow impeller?
186 heads on a HB motor? Interesting. </div></div>

Kurt,

According to my builder this engine will make a estimated 380 (Gross HP) and I am also cooling a TH-350 to boot. I would rather run cool all the time -especially if the car is used in local parades which I plan to do in the future with it. [img]<<GRAEMLIN_URL>>/beers.gif[/img]

Re: Water Pump Re-builders here at SYC?
 

I think I've seen 2 other L48's, out of hundreds, with 186 heads.
They are original to the car?

The small block cooling system is well designed. With that rad, I'd go with the stock impeller. More flow is not a good thing - cavitation and other problems. The thermostat is still the restriction in the system. Removing the thermostat increases the flow, but that doesn't turn out well.

btw, making hp doesn't mean you'll have more heat rejection. If the engine is efficient, you could have less.

Re: Water Pump Re-builders here at SYC?
 

Original heads. Radiator builder suggested a high flow impeller. You think a standard impeller would do the job - that would be fine with me. I will ask The pump rebuilder to see what they say and report back [img]<<GRAEMLIN_URL>>/beers.gif[/img]

Re: Water Pump Re-builders here at SYC?
 

That's a plan, ask an expert. Hopefully they know something about cooling systems... [img]<<GRAEMLIN_URL>>/smile.gif[/img]

Re: Water Pump Re-builders here at SYC?
 

Hey 70 COPO

Have you considered running the L-46 camshaft out of the Corvette? Over on the NCRS.org board Duke Williams has written extensively about this. There are several threads about this. Duke has written in detail about what head massaging to do with this camshaft to make meaningful torque and horsepower. Duke is extremely knowledgable about sbc engines. I believed he raced a 63 fuelie back in the day. He is an old timer for sure. It may be worth your time to check this out.

I own a L-79 in my 67 Vette and love the engine but given you have a 350 it may be worth reading. JMO.

Re: Water Pump Re-builders here at SYC?
 

Phil, just a little food for thought. My BBC motor is around 450hp and I'm running a stock pump/impeller that was, like I said earlier, rebuilt by Arthur Gould. I go to car shows (lots of idle time, get groceries and run the drag strip and it never overheats.

In other words, just have your w/p rebuilt to stock specs and make sure your radiator is good and you won't have any issues.

Kurt

Re: Water Pump Re-builders here at SYC?
 

Thanks Kurt! [img]<<GRAEMLIN_URL>>/beers.gif[/img]

Re: Water Pump Re-builders here at SYC?
 

I just got off the Phone with Chris at Authur Gould. I accurately described thd engine, the tranny, the engine modifications and the radiator modification.

Chris recommended a hi flow impeller. Pump is shipping tomorrow. [img]<<GRAEMLIN_URL>>/biggthumpup.gif[/img]

Re: Water Pump Re-builders here at SYC?
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: sixt9rsx33</div><div class="ubbcode-body">Hey 70 COPO

Have you considered running the L-46 camshaft out of the Corvette?

I own a L-79 in my 67 Vette and love the engine but given you have a 350 it may be worth reading. JMO. </div></div>

Yes! The cam I decided to go with is a hybrid cam made by Comp Cams that is called the L-79 &quot;Nostalgia Plus&quot;. According to Comp Cams this cam is the generic replacement for both the L-79 and the L-46.

Replicating the L-46 is a more accurate target when describing the build for the Z-11 rebuild, so you are exactly right. I made reference to the l-79 cam as that is what it is commonly called as the L-46 is a lesser known engine in general circles.

Re: Water Pump Re-builders here at SYC?
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 70 copo</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 69VN</div><div class="ubbcode-body">I find that interesting too Kurt. #186 heads on a '69 HB 350? I thought both the HA and the HB coded 350's only came with #041's (casting symbol was a right scalene triangle). Just saying.

SAL </div></div>

Sal,

The CRG has an associate member named Alan Colvin who wrote the series &quot;Chevrolet by the numbers&quot; If you have the 1965-1969 copy look at page 102 for usage applications with head 3927186.

It was made with both 1.94/150 or 2.02/160. Lower horse applications like my car got the 1.94/150 from the factory.

Alan's CRG BIO can be found here: http://www.camaros.org/aboutcrg.shtml#Members </div></div>


Yep! I have his book--- just saw it. States that the #186's were possibly used interchangeably! Must be something rare to have these heads though. Maybe when they were assembling the engine they were short a pair of the #041's but who knows. Still neat!!!

Thanks,
SAL [img]<<GRAEMLIN_URL>>/beers.gif[/img]

Re: Water Pump Re-builders here at SYC?
 

Sal,

My original 186&quot;s were valved for 1.94/150 (low horse) and I have a $900.00 bill from the machine shop for the conversion. It is funny to me that this would be considered a rarity as I have been looking with a focus on late production pace car small blocks for decades-and double hump heads were present in a significant portion of this population. So much so that I honestly did not give it a second thought as to the relative rarity of the head usage.

Re: Water Pump Re-builders here at SYC?
 

Good luck with your engine build! Have you posted pics of your car on here? Would like to see them! By the way, I am currently running the #041's on my '69 SS but my block is a 1969 HC coded block (originally came with a 2 BBL, 250HP and manual trans.) but the engine is running a nice cam and has 11:1 compression. I guess it's safe to say it's got some mild work done to it!

SAL [img]<<GRAEMLIN_URL>>/3gears.gif[/img]

Re: Water Pump Re-builders here at SYC?
 

Sal,

It is pretty much all done.. just waiting for some good weather to break the rebuild in properly. Externally this is 350/300 with TH-350 so the air cleaner is kind of specific to this application with the ThermoAC warm up valve including manifold stove with pipe. Since the car is original and I have owned it for 25 years it still has some very neat untouched original stuff on it... check out the Fuel line to fuel pump hose.. &quot;GM GAS D03369&quot; [img]<<GRAEMLIN_URL>>/beers.gif[/img]

This is a driver.

Re: Water Pump Re-builders here at SYC?
 

Here is the 21 inch 4 core radiator that I had custom made for this build.. its street manners and overall driveability should improve.

Modifications to the original engine:

186 heads converted to use 2.02 valves
Roller rockers
L-79 350 HP Cam
Keith Black hypereutectic pistons
Eagle Rods
GM 1187 Steel Crank
302 Z/28 windage tray and Z/28 pan with the internal rails
High flow impeller modified water pump

Trans input: Hughes 2000 stall converter.