I'm in the process of looking at a 96 z28 that is missing its motor and trans. The car was a t-top lt1 with a 6speed manual tranny. I was thinking of picking it up and possibly putting an ls1 into the car, I have seen alot of threads regarding v6 to ls1 but not many going to ls1 from lt1.

What exactly is needed?

 

The lt1 to LS1 swap is not as hard as the v6 to V8 swap. I think someone makes an adapter harness but I have been told its only a matter of switching 3 wires. I dont think anyone form this site has done it.

Your buget going to need to be big because a low miles LS1 with a 6 speed is going to cost from $2000-2800

 

Does anything with the k-frame etc have to be changed?

 

Yes. you will need the LS1 K member.

 

So the list so far is:

-ls1 engine and trans
-ls1 subframe
-ls1 engine harness?

how about the gauge cluster in the car? Anything bcm related have to be changed?

 

You are really doing yr homework and prep. Again, the car better be in NICE shape to make the investment worthwhile...