Ok I just got the car all back together. I went from an aluminum pump to a cast iron one. And from the stock type electric fan and blades(no shround to aftermarket electric fans(no shroud. Today I get all O had to to was seal up the new temp sending unit for the electric fan controller with some teflon tape. I ran it and took it out for a drive and the temp slowly climbed. It didn't overheat but I think it could if I ran it harder of it was hotter out. Now my question is could the water pump be causing this due to the impeller on the new pump? The old pump had the multiple fins and the backing plate on the impeller. Now I also noted when I pulled the aluminum pump that it had 2 gaskets and some rub marks on the plate it mounts to. I guess it rubbed with just one gasket and that is why 2 were used. The new pump has just 5 blades to it and no plate mounted to it. Could this be the reason for it running hotter? The new fans seem to move enough air and you can feel the heat they are pulling off.

 

I assume this is a stock replacement water pump; at least is sounds like it by your description. If so, it should be adequate.
If the temp climbs like that while the car is moving, then either you have a big air bubble in the system, air flow thru the radiator is restricted, or the flow is weak.

If temp rises when car is sitting still or moving slowly, then it is a fan issue.
"stock type electric fan and blades"? What car are we talking about? The Olds would have a belt driven fan.

Did you change t-stats or make any other engine changes recently? Was this the car you changed to non CCC with? If you did bypass the CCC, then something there in the process could cause overheating.

 

Water pump should be fine.
Now that you have eliminated the water pump (I know you made sure of suficcient clearance), give me the scoop on your radiator.
Construction,
mileage,
Any calcium buildup?
Does it, or the engine, have issues containing the coolant pressure?
You DO have a thermostat, don't you?
Jim

 

Yes it is just a generic stock replacement pump. I didn't burb the system just filled it so an airbubble is possible. AS for the old stock type electric fans what I did was to take some old stock GM electric fans with blades out of their shround and custom mounted them . I haven't had a belt driven fan on this car in years. The only changes made recently were the water pump and aftermarket fans.

 

The radiator is a fairly new all aluminum radiator. Allclean inside. YEs I have a theromstat. Just reused the old one as it hasn't been in the car all that long. Both radiator tanks and hoses felt equally hot.