The issue here is not really about overheating. I've been dealing with the car getting hot at traffic lights during the summer for 3 years now. Right now, I'm thinking of replacing the water pump for other reasons...trying to do my research before I do this..

IF I replace the water pump, I'd like to get an aluminum one to save some weight. There was a discussion on Al water pumps on another forum...seemed like most posters did not think the Al pumps (aftermarket) were as good as the stock cast iron pump.

So my question is simple, despite all the words...IS there an Aluminum water pump out there that FUNCTIONS as well or better than the stock OEM cast iron pump....on Big Blocks..

That's it!!!