I was wondering if the motor from a 95 z28 would fit in my 94 z28. And what the differences are if any.

 

They are almost identical. I know that '95 was the year that the OptiSpark (the LT1's distributor) was updated with a vented version.

Not many other differences. Hopefully Fred (Injuneer) will be along shortly and can fill you in on any other important differences.

 

Here is a bit of year difference info.