I am looking for a water pump for 68/69 442 400 cubic inch motor

thanks

Bruce

 

requirements?
Factory casting only?
no imperfections?
date range?

Any old aftermarket unit OK?

AC vs not-AC may matter

 

Preferably one from an Oldsmobile , not necessarily date coded. Non AC

Bruce

 

Still need more info - does your car have heavy duty cooling? If so, the water pump would be the same as for a car with A/C (GM casting # 400269). Without A/C or heavy duty cooling, the GM casting number is 398681.


Randy C.

 

Yes I have the water pump # 400269
$100 shipped from Calif. to 48 States.
Gerald

 

How many styles of water pumps are there? is there different ones for small and big blocks.
I am replacing my 68 350 with a 400 from a 68 442 for a non air car. What pulleys fit with it for water pump and crankshaft , I need those as well.

 

It sounds like your 400 engine doesn't have a water pump or pulleys, correct? You can swap over all the pulleys and the water pump from the 350 onto your 400. But you need to keep things together as a set. Once you start mixing and matching pulleys you can get into trouble.

There were three water pump lengths, and if you don't want to re-use the old one on your 350 than remove it and take it to your favorite auto parts store. Make sure the replacement you purchase is the same length, or if you place it flat on the counter the same height. Distance from where the fan attaches to where it fits against the timing chain cover. Then you can use the pulley set. But... if you get a different length water pump then the pulleys will not line up. Some configurations may only be half the width of the belt off, but that's enough to chew up the belt or even throw it going down the highway.

Check out this thread for more details on the water pumps.
https://classicoldsmobile.com/forums...p-lengths.html


John

 

How many WP configs?

A lot!

3 lengths
x2 inlet nipple OD's

And that's just the main fitment issues.

At least x2 impeller diameters
w/ or w/o heater hose nipple

etc.

Use your 350 engine WP/pulley set and call it done