Used LS Motor. How many miles is too many?
06-30-2010, 02:05 PM
#3
I have swapped them in with as high as 140k on turbo cars with no issues. Regularly they have between 60-110k at the time of swap. My daily driver truck has it's original 5.3 with 200k and it does NOTHING to indicate more than 50k miles. No leaks/ smoke/ oil usage. I wouldn't think twice about swapping it into a project for myself tomorrow....
06-30-2010, 03:38 PM
#4
I have swapped them in with as high as 140k on turbo cars with no issues. Regularly they have between 60-110k at the time of swap. My daily driver truck has it's original 5.3 with 200k and it does NOTHING to indicate more than 50k miles. No leaks/ smoke/ oil usage. I wouldn't think twice about swapping it into a project for myself tomorrow....
I guess what I am saying is I haven't seen a single parts failure on one of these engines that wasn't created by abuse or neglect. I'm not saying it can't happen but in stock and mildly modded form it is one of the - if not the most bulletproof platforms I've ever run.
I would feel totally comfortable swapping in a 150K or higher mile Gen III / IV engine if it looked good inside the valve covers and pan.
06-30-2010, 04:02 PM
#6
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I have 153k on the engine I swapped into my Camaro. Running the cluster from the donor car as well to keep track of original mileage. Haven't had a single hiccup! Runs bottom 12's all day!
06-30-2010, 05:56 PM
#7
Pop a valve cover and see if the oil has ever been changed. Sludge = overhaul regardless of the mileage
If it looks clean, run it
Id suggest a new oil pump regardless of mileage and its easier to do it before its dropped in the car. While the pan's off flip it over and inspect the cyl walls. If those are still good and theres nothing obvious like a spun bearing then drop it in
If it looks clean, run it
Id suggest a new oil pump regardless of mileage and its easier to do it before its dropped in the car. While the pan's off flip it over and inspect the cyl walls. If those are still good and theres nothing obvious like a spun bearing then drop it in
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06-30-2010, 06:21 PM
#9
I agree with these guys, one of the best judges of the engine's "character" is how it looks under the valve cover. I have had almost 100 of these engines and you can sure see a huge difference in how they were taken care of by what's under the valve cover. Some still look new and some are dark brown...all depends on how the maintenance was.
06-30-2010, 07:56 PM
#10
Is that complete all accessories, wiring and computer? I have been looking for a while and they seem to be around that, found many in the 1200-1600 range all mileage dependant, with 75k miles it may be a little high at least compaired to what they have been going for in my area.
06-30-2010, 07:59 PM
#11
Pop a valve cover and see if the oil has ever been changed. Sludge = overhaul regardless of the mileage
If it looks clean, run it
Id suggest a new oil pump regardless of mileage and its easier to do it before its dropped in the car. While the pan's off flip it over and inspect the cyl walls. If those are still good and theres nothing obvious like a spun bearing then drop it in
If it looks clean, run it
Id suggest a new oil pump regardless of mileage and its easier to do it before its dropped in the car. While the pan's off flip it over and inspect the cyl walls. If those are still good and theres nothing obvious like a spun bearing then drop it in
Thats good advice, any easy too.
06-30-2010, 08:33 PM
#12
Is that complete all accessories, wiring and computer? I have been looking for a while and they seem to be around that, found many in the 1200-1600 range all mileage dependant, with 75k miles it may be a little high at least compaired to what they have been going for in my area.
06-30-2010, 09:23 PM
#13
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Thats the same price I got for a LQ4 with appx 100k on it. No accessories, computer, or harness, so that seems to be the going rate.
Ive seem lsx motors with over 150k and stilll have good cross hatches in the cylinder walls, but it all depends on how well it was taken care of.
I agree 100% with the valve cover, especially the drivers side since that has the pcv system in it and typically gathers more sludge.
Ive seem lsx motors with over 150k and stilll have good cross hatches in the cylinder walls, but it all depends on how well it was taken care of.
I agree 100% with the valve cover, especially the drivers side since that has the pcv system in it and typically gathers more sludge.
