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LS3 into my 83? I was originally planning a 6.0 swap into my car when I stumbled upon an LS3 engine block out of a 2015 Camaro. It comes with a scat crank and stock pistons/rods. However, guy says the block potentially needs resleeved. He wants $800. Would this be a good deal? I was planning on a stroker motor anyway and would essentially have to start from a bare block on a 6.0 anyway, so I figured this may be a better option? If it is, about how much would I need to invest from the block up to come out at a decent 500hp range? (Seems like a reasonable number? Never looked too much into the LS3’s) |
Re: LS3 into my 83?
Originally Posted by Oreo
(Post 6262794)
I was originally planning a 6.0 swap into my car when I stumbled upon an LS3 engine block out of a 2015 Camaro. It comes with a scat crank and stock pistons/rods. However, guy says the block potentially needs resleeved. He wants $800. Would this be a good deal? I was planning on a stroker motor anyway and would essentially have to start from a bare block on a 6.0 anyway, so I figured this may be a better option? If it is, about how much would I need to invest from the block up to come out at a decent 500hp range? (Seems like a reasonable number? Never looked too much into the LS3’s) 500hp in an LS3 is only requires a cam swap and tune (assuming you have headers, etc). Re-sleeving is not cheap and I would question why does the motor have a scat crank and stock pistons/rods? That's backwards. Does it come with heads? I would pass unless it came with more parts and you can verify the integrity of the sleeves. |
Re: LS3 into my 83?
Originally Posted by ShiftyCapone
(Post 6262830)
500hp in an LS3 is only requires a cam swap and tune (assuming you have headers, etc). Re-sleeving is not cheap and I would question why does the motor have a scat crank and stock pistons/rods? That's backwards. Does it come with heads? I would pass unless it came with more parts and you can verify the integrity of the sleeves. |
Re: LS3 into my 83? Just guessing but it seems like the guy blew up an engine and kept the stuff that could be salvaged and is selling the stuff that can't. |
Re: LS3 into my 83?
Originally Posted by QwkTrip
(Post 6262863)
Just guessing but it seems like the guy blew up an engine and kept the stuff that could be salvaged and is selling the stuff that can't. https://cimg4.ibsrv.net/gimg/www.thi...f57f8cb3f4.png |
Re: LS3 into my 83? Scratches are one thing, delamination and cracks are another. I would pass. |
Re: LS3 into my 83? Vertical marks like that are common so long as you can't catch a fingernail on them. That will clean up with a hone. Your issue will be if the sleeve is cracked or peeling away from the block casting. You'd have to fully disassemble to accurately inspect. |
Re: LS3 into my 83?
Originally Posted by ShiftyCapone
(Post 6262882)
Vertical marks like that are common so long as you can't catch a fingernail on them. That will clean up with a hone. Your issue will be if the sleeve is cracked or peeling away from the block casting. You'd have to fully disassemble to accurately inspect. |
Re: LS3 into my 83?
Originally Posted by Oreo
(Post 6262893)
So just judging by that picture, probably better to avoid? |
Re: LS3 into my 83?
Originally Posted by ShiftyCapone
(Post 6262895)
Not necessarily. If your going stroker you will need new pistons and machine work anyways so small scratches are nothing. You really need to inspect every cylinder. A hone and resized piston is normal. A cracked sleeve and junk block is scrap. If you dont feel you have the experience or access to someone who can inspect the sleeves I would pass. However, use the "what if" as a negotiation tool. |
Re: LS3 into my 83?
Originally Posted by Oreo
(Post 6262897)
Well, let’s say everything is good and it is just a few small scratches. Is $800 a good price on this or can I do better elsewhere? I’m trying to cut costs where I can, which is why I originally considered a junkyard 6.0 iron block. However, I do understand the concept of getting what you pay for. |
Re: LS3 into my 83?
Originally Posted by ShiftyCapone
(Post 6262899)
Ask $500. If it ends up being junk you can salvage and sell the internals. The unknown factor is in your favor for negotiations. The seller should appreciate that. How risk adverse are you? Junk yard motors come with the same risk. |
Re: LS3 into my 83?
Originally Posted by Oreo
(Post 6262901)
He doesn’t seem to be willing to come off the price anymore. I mentioned if it did need sleeves it’s a pretty expensive process and his response was “cheaper than buying a new block” so I guess the search continues. Or I’ll just buy a new block |
Re: LS3 into my 83? You made the right choice. There is really no such thing as an inexpensive LS3 no matter how you cut it. |
Re: LS3 into my 83? Resleeving an LS1/LS2/LS3 block for all 8 cylinders will easily cost $2,000 + when done by a qualified shop with the correct sleeves and machines. If it's not done by a top notch machinist that knows what to do, to use cutting fluid, temperature controlled room etc, there is an outstanding chance of sleeves moving, leaking head gaskets and other disasters in the making. Run for your life from that $800 LS3, other than as a source parts for intake, injectors, fuel rails, coils, coil pack harness, covers, maybe the heads, oil pan and sensors. Fixing the short block will be more expensive than getting a good used LS3/L99 etc for ~$4000 to $5000 by the time it's done. 500 whp, cam & header LS3 is definitely doable. |
Re: LS3 into my 83? My 2 cents is to not start down the LS path until you have a good plan. I made the decision to do the LS swap, but I should have done more research. I found a 5.3 aluminum engine for a good deal. It was basically new, but there were surprises that I didn’t prepare for. All accessories, the intake manifold, and the oil pan were removed. It had VVT, DoD, and a 58x reluctor. I had to install delete kits, and the 58x restricted me from the easier to program PCM. Those weren’t deal breakers, but it took more time and money than I originally thought. Decide which engine you want and then go search for the good deal. |
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