If I convert a Dragon Lady powered by a .60 size glow engine to an E-Flite Power 60 can I expect equal or better performance?

these brushless motors are designed and Named to be replacements for the engines sizes they are named for, I would expect similar performance, less all the cleaning , pumping and engine starts.

Dan
TrueRC

Assuming you go for 7S LiPo it might be equal. On 5S it is more like a .40 engine.

I have used the power 60 in a bunch of planes from war birds to arobatic 7-10lb. you can get 1200watt's on 6s 4000mha lipo using a 16x8 prop Xoar make real nice wood props
make shure you use a 80amp esc and get a watt /amp meter (eflite makes a good meter)