- Jan 1, 2020
So looking at buying a 94 80 with blown motor and want to do a LS swap what is the best donor vehicle for this. I am looking at Yukons and silverado. I have researched lots and would like a 6.0 but not married to the idea. I know the 5.3 and 6.0 are most common I believe. I think I want a 6l80 instead of 4l80 for more gears. I am not schooled on ls motors or trannies just know from what I have read on here. Please if you have done this swap or have first hand experience chime in. The other question is how many miles is to much for a ls motor I know this is subjective but is a 200k motor ok to just resfreah seals and throw in? Is there certain motors/trannies I should stay away from. Thanks in advance. Also not trying to spend 15k on a swap was thinking the 6-8k range is doable. Trying to find a donor vehicle will be hard with used car market going nuts. Ideally I would buy a wrecked rig but will see!!