[Kasman]

I have a 2003 Superformance with a stout 68 427 side oiler. Finally got it titled and been driving it when I can. The engine temperature concerns me in that even when driving on a 50 degree day the temperature climbs to 80 C quickly (5 to 10 minutes) and will stay there, no problem, however when I get hung in traffic the temperature will rise to 95 - 100 C until the fans kick on. The temperature will stay around 95 C until I drive for 5 or so minutes at 40 plus miles per hour where it will return to 80 C.

Is this typical for FE? (my 408 never got above 95 C on a 95 degree day in traffic)

I inspect the coolant level before every ride and the fans are turning in the correct direction. Supposedly the engine builder installed an oriface plate with a quarter size hole instead of a thermostat

If this is not typical what would you look at to resolve?

Thanks in advance

Kas