I have an engine with double roller timing chain, which did away with the crank sensor gear. I have an 95 pcm with LT1 edit cable and software. What all needs to be done to make this work?

 

Nothing, with regard to the crank (CKP) sensor. It was added in 96/97 for OBD-II misfire detection. It has no relevance at all to the way the engine runs. 93-95 do not have the CKP sensor.

You will need a knock sensor from the 93-95 cars (4,000 ohm). Your 97 has a 100,000 ohm knock sensor. You can also keep the 97 KS and have a resistor added to the 95 PCM.