Over Heating at Idle

OK we put in a 302 in my 78 Ghia coupe. Runs great while going down the road...about 190-200 degrees, but when I'm idling for a few mins temp starts to go up. I changed the waterpump and thermo. Also I have headman headers on...was thinking about getting the hookers that have the coating...would that Make a difference? The rad is part 514 and 3 core using the mechanical fan. Not sure what kinda of aftermarket electric fan would fit or take care of the problem. Please help. This is not a stock 302...was just gonna put the reg manifolds back on if all else fails. Maybe I can find something at Carlisle this week end. I usually run my car in the parade on Memorial day and today it over heated and I had to retire to a safe spot early....any advice and help is greatful...thanks!!

YO STEVE
[addsig]

Get a better Flex fan... Or go to a high CFM Electric.
[addsig]

Is your radiator used? If so, maybe it needs to be cleaned out, pluged cores will kill the cooling at low rpm.

Or, if you have a clutch fan, replace the clutch....
[addsig]

Went to Carlisle and got a smaller water pump pulley and it solved it. drove home 2 1/2 hrs and it ran 190 or less degrees and hit traffic on the way back and didn't go over 190...thanks all!!
[addsig]

Smaller water pump??? [img]/forums/images/smiles/icon_confused.gif[/img]
Ras Daniel [img]/forums/images/smiles/icon_cool.gif[/img]

Retarded timing. Advance it.
[addsig]

NO a "got a smaller water pump pulley "

Turning it faster.......
[addsig]

[img]/forums/images/smiles/icon_lol.gif[/img] Oh, I read it again and saw the puleey this time. "A smaller water pump pulley" Geeze! I was thinking what kida parts are they making for these Mustang II and they have different size waterpumps? [img]/forums/images/smiles/icon_biggrin.gif[/img]
Ras Daniel [img]/forums/images/smiles/icon_cool.gif[/img]