Im swapping my 4.3L v6 out of my 1992 1500 pick up and putting in a LT1 from a 1994 Z28. Will the stock 5.7L motor mounts for the truck work with the mounts on the LT1?

the mounts for the motor should be the same. whether or not the mounts are in the proper place is another question. the 4.3l block is more or less the same block so the mounts shld bolt right on. however, the v6 may not sit in the same location mount wise as the 5.7.

So lets say i get the stock 5.7L mounts for the truck, would that work out better?

the mounts from either vehicle should work fine. i was just referring to the location of the mounts on the frame that may need to be moved.

The mounts will have to be moved to accomodate the bigger block.

I have a 1994 Chevy C1500,I am thinking about putting a 350 crate in my truck, the motor mount are different but the holes are pre drilled in my truck, yours will probably will be the same.

So the mounts on my frame will not work with a 350