i was wondering if someone could help me find info on what i will need to swap my 4.3 with a ls1 any info would be GREATLY APPRECIATED

 

Money and time. You can get mounts from JTR. Then the stock radiator wil work to a point. Headers will have to be custom made if you want a decent set thats better then manifolds. You need a imput shaft and bellhousing from the LS-1 too. A custom harness will be in order too.

 

will the stock4L60e trans bell housing and input shaft work or does it just need to be hardened also i have the harness for all the engine sensors i do need a pcm do they make a aftermarket one and would you know wher i can get these items ill need

 

The LS1 style input shaft on the trans is different than the others, as well as the bell housing bolt patern. I would bet you would do best by buying a busted trans off an f bod or truck.

I just recently bought a 90 model s10 for this very reason too. Mine will be more race oriented though.

 

WHAT DO YOU MEAN ? THE 4l60e trans i have is the stock one that is in the truck.are you saying that the one i have wont work

 

Right, you would need to get the bellhousing and imput shaft from a ls style motor 4l60e