I am replacing the engine, in my 1997 z28, 6spd....but I was wondering do all the lt1, dating back to 1993 fit into an 97 with wiring, and computer... besides a 97', which is right before the ls1...what engine can expect the least adjusting to drop in? example: could a 94 lt1 go in without issue.?

 

What is the current condition of the motor you want to replace? let us in on your situation so we can help ya more

 

Your best bet would be a 95-97 if you're going for a complete longblock.

The 93 had a different intake manifold.

The 93-94 had a non vented opti with a different timing set, timing cover and cam dowel that will not drive a vented opti.

If you get a 95 longblock with the knock sensor still attached, swap it with your knock sensor for OBD2 compatability.