340 Duster running hot

1wildandcrazyguy, 38* is actually where the dyno made the most power and lowest temps. I've actually played with it a little in the car but it runs the coolest at 38. I do not have vacuum advance, have msd distributor. Also, I am switching to straight distilled water and water wetter to see if that will get me around 195-200. If so I will be happy. Speaking of which, anyone have a good idea for removing all of the old coolant out of a small block mopar so that I get all of the glycol out so I can fill with 100% distilled? I thought about continuing to fill the engine down the thermostat neck while I let it drain out the lower radiator hose until I just see clean water come out.

And as for the converter, it is a PTC converter built for my engine/car.
9.5" converter 3500 flash stall. I LOVE this converter, would recommend them to anyone. It flashes nice and high but it is very efficient while driving down the road. Like I said, the temperature is never over 170 degrees on the hot days in the transmission, and most days runs around 160

It is my opinion that you may have too lil comp for your cam to get the timing that high.jmo

a closed chamber head should need less timing than open if all's matched cam/comp.jmo
according to chrysler and my own experience, 30* timing if all's matched. Amongst other things like compression, the chamber shape plays in dictating when spark should happen.jmo