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can anyone educate me on waterpumps

M

m j

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Time to replace the pump.
any reason to look at aluminum?
any year or model have advantages?
I am not sure what I have on there now but I know the clutch fans I have on hand (1981) did not match the mounting pattern but I cannot recall why it didnt bolt up.
any help or swapping secrets appreciated

thanks
 
You might check out the marine water pumps. They're supposed to be built a lot better. I'm sure they come with a price though. /forums/images/graemlins/thinking.gif
 
A water pump is a water pump...just get a new one.

Aluminum doesn't rust. /forums/images/graemlins/rotfl.gif
 
anyone ever just rebuild one?
isnt it just a bearing and a few seals?
 
if I go bigblock it is getting a Ford
I wanna see what it takes to split the sbc with the turbo first
 
some water pumps you can. you just buy the internals and replace it. thats how they remanufacture them i think. unless they do it a different way.
 
Yea pumps are cheap, I'd get a new one too so you wouldn't have to worry about over heating. Engines aren't cheap /forums/images/graemlins/yikes.gif
 
"new" vs rebuilt or just grab a rebuilt?
I like the cast one as everything (except my van ps pump) seems to mount to the water pump on my SBC, cheap too

thanks guys
 
[ QUOTE ]
A water pump is a water pump...just get a new one.

Aluminum doesn't rust. /forums/images/graemlins/rotfl.gif

[/ QUOTE ]

Marine pumps have bronze impellers & a stainless steel back plate, I believe they also have ceramic bearings, they are also bi-directional... so, no, a water pump is not a water pump. I have seen them on ebay for pretty cheap, and they're usually for SBC.

Don't know if mj is looking for better performance, or just built to last? /forums/images/graemlins/dunno.gif
 
Only people I know of that have gone through this, are Olds folks, although it is at least a GM product.

They found that the impeller can be different (overall size, fin count) based on vehicle or options, and that the GMB aluminum pumps seemed to be designed to move more water, efficiently, than the stock stuff.

An anti cavitation plate is part of GMB's setup as well, from what I could tell.

I don't see how moving more water when needed, can do anything but help.

www.corvettefever.com might have their water pump rebuild article online. For a stock non-collector setup, I'd just buy a new one though as opposed to rebuilding. Weren't worth the time/parts compared to a $25 or so rebuilt one.
 
I know some Ford racers cut the water pump impeller down quite a ways to reduce engine drag.
I havent had a over heating problem yet but there is some strange sounds coming from the front of the sbc
do not recall the age of the water pump so it is getting changed when I do the rad.

what years had studs instead of bolts to retain the pulley/fan?
 
If I were to buy a waterpump for a SBC today I'd buy an aluminum pump. Price for aluminum versus the factor reman stuff isn't out of line. I'd also buy an impeller backing plate at the same time and who knows maybe you can find an aluminum pump that already has an impeller plate on it. I'd also think the aluminum might scavenge a few degrees for you as well.
 
[ QUOTE ]
what years had studs instead of bolts to retain the pulley/fan?

[/ QUOTE ]

All of mine have had studs.
 
so parts whiz, what year did that change over
I think it was the studs and the differing size of the shaft that prevented me from using a newer clutchfan.
what year pump do I need to order
more 'easy, chevy, everything swaps' but it aint so
 
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