1950 Packard 288 Auto overheating HELP

Posted by otgdy On 2010/1/26 7:12:14

I have tried everything to resolve an overheading problem with my Packard. Hopefully someone can help.

The problem is when I drive for a while and sit in idle (i.e. traffic) the car overheats.
What I have done.

Had the radiator checked and cleaned.. it was clean already replaced the thermostat ... that needed it. added metal tube/spacer as in stock install.
Had the water pump rebuilt (speedwell)... it was working but leaking.
Had transmission rebuilt at speedwell.
added trans cooler.. thought the trans was overheating engine.
pulled the drain plugs in the block to check for rust.. there was none. Flows fine.

Speedwell reset the carb and timing. I am assuming they are correct still.

Car does NOT overheat if I start it and let it sit. Only after driving a while. It runs great aside from the overheat issue. Shifts are firm around 35-40.

Any suggestions would be greatly appreciated.