While I love this car, the engine temp at idle has been an issue for years. I thought it would go away when we rebuilt the engine but nope. I’m about to have the floor pans replaced and I though about changing the yoke to fit the 26” radiator at the same time but I thought I would try one last time to see if there is something I’m missing.

The issue is the same as always, when the car is moving it runs at 181 degrees. As soon as you stop and idle the temp starts heading up. If I’m stuck in traffic on the highway the temp can reach 230 and I’m already running the heater at full, putting the car in neutral when I can. I suspect it would keep climbing if I let it. I have the air dam on it. I’ve gone as far as trying to gauge the airflow with a meter. I added an electric 16” pusher fan and that did squat except sound like crap. I’ve tried clutch and no clutch.

So is it lack of airflow or am I missing something. A 440 with no ac and auto gets the 22” radiator. I’d hate move up to the 26 and still have the problem. Advice?

Details:
440 (.030), Stealth Aluminum Cylinder Head, Comp Cam Adjustable rockers (1-5), Edlebrock CamShaft 2192. MSD Digital 6A, 180 Thermostat, Edelbrock 8814 BB Mopar High Volume Aluminum water pump.
727 Auto trans (Bob Cope Racing), 3.23 gears
Atomic EFI: Air/Fuel targets [Idle 13.9, Cruise 14.0, WOT 12.8, Boost 11.5]; Ignition timing [Idle 800, total RPM 2500, Idle advance 17.0, Total advance 34.0, Vacuum Advance 10.0]
22 Inch Aluminum Radiator (US Radiator), with shroud and stock fan with clutch. 50/50 antifreeze. The fan is about halfway into the shroud.

IMG_20190611_184329.jpgIMG_20190705_200652.jpgIMG_20190705_200705.jpg