Recent content by DaveInDenver

I suggest contacting either Brewer Transmissions or Passion Performance Transmissions. Both are long time MOPAR businesses. Brewer is a family ram shop with about the best prices and selection of parts. Passion is more corporate, has some customized items, but a little more pricey. I think...

Yes It is fixed I drove it for 40 miles in 90° temperatures. The average temperature was 205• with a high of 208° when climbing hills. The 440 is still in break-in process.

I thank everyone for your expertise & input....and the winning solution is using a 195° thermostat. For years I have used 160° and never had a problem. I guess I was lucky! Never again...

The heater core is still functional and in use.

I am using electric fans. They are set to activate at 160°. They seem to have good air flow.

The Holly Sniper auto adjusts A/F Ratio. It is around 13.5. I am at 6300 ft altitude.

I apologize for not giving all the facts. Both aluminum radiators are new Big Block radiators.

I have two Challengers that have undergone the same engine change-up, build design & overheating redults. I recently changed out a 318 CID/904 Auto for a 440 CID/727 Auto. Installed a Holly Sniper fuel injection system. The engine was built by a highly respected machine shop that focuses on...