[thebrat1967]

Hello,
I have a 1967 firebird convertible with a 326 engine. It is punched out 1 over with an edelbrock high rise and a small cam. Problem is its over heating to around the 210 degree mark. Does anyone have an idea on what water pump would be the best on it? I really do not want to change out the whole front of the engine.
Help is appreciated
Thanks

[Goatracer1]

210 degrees is not really overheating. Antifreeze/water mix under pressure doesn't boil to over 260 degrees. If you have the original radiator it is probably time for a new aluminum one. Any of the major brands are good.

[25stevem]

Please give more details!
We need to know when Temps are raising .
At road speed above 30 mph ?
At a light ?

Does the temp creep up at a light and then not really go back down?

One simple , cheap and fast thing to give a shot is use DuPont’s two part flush.
You will be shocked at how much crap and rust scale this will remove from both the block and the Rad!

[mgarblik]

That DuPont stuff is called Cooling System Cleanser. It's a caustic cleaner and really does an excellent job. It's a little hard to find. Follow the directions exactly as if not neutralized it will continue to eat away at the metal in the system.

[25stevem]

If it turns out that you still need a new rad after the HD flush, then pull the pump out too just to look at it.
If it was replaced at some point in time with a pump that uses steel fins like a Alternator fan, then get that pump the hell into a scrap heap and be sure to buy one with a cast iron ( factory type ) vane type impeller .

[thepontiacman]

check the 2 water pump plates in the timing cover to see if they have any holes from corrosion.

I had a 68 that running hot and couldn't figure out until i found a hole in the plates. Changed them and no more problem.

What thermostat are you running?