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[Z06] Engine Mystery

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Old Jan 20, 2025 | 09:29 PM
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Default Engine Mystery

Hello, first time posting here.

I inherited two Corvettes from my father when he passed away in May. One is a black 2017 Stingray that is in great shape and the other is a white 2001 Z06. The mystery is the engine in the Z06. He passed mid crate swap on it, and I received the car with the engine mated to the transmission, and basically all the other parts un-installed.

I am in the process of putting it all back together, however I have no idea what engine he put in it. He had told me it was going to have about 600hp when he was done and it appears he was keeping it naturally aspirated.

Is there an easy way to identify an LS engine without having to remove it?
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Old Jan 20, 2025 | 10:38 PM
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If its a LS crate motor there should be a serial number etched into the block above the oil filter. Then, with that number, call GM Performance Parts and ask them what Dad bought.
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Old Jan 21, 2025 | 08:42 AM
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ID the engine but you may need to look for mods and receipts for parts he bought. It could be a LS but it could have a cam etc. Check the heads and see if they are stock.

If he modified the Z06 engine it is going to be well modified to make that extra power over the 405 HP.
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Old Jan 21, 2025 | 09:42 AM
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Originally Posted by mikerussell269
Hello, first time posting here.

I inherited two Corvettes from my father when he passed away in May. One is a black 2017 Stingray that is in great shape and the other is a white 2001 Z06. The mystery is the engine in the Z06. He passed mid crate swap on it, and I received the car with the engine mated to the transmission, and basically all the other parts un-installed.

I am in the process of putting it all back together, however I have no idea what engine he put in it. He had told me it was going to have about 600hp when he was done and it appears he was keeping it naturally aspirated.

Is there an easy way to identify an LS engine without having to remove it?
Condolences on the loss of your dad, lost mine on Easter Sunday.
If it is a crate engine, they come from GM with a part ID tag/sticker that has the part number on it, so I would look for that first.
And, did your dad not keep any receipts for the parts he bought?
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Old Jan 21, 2025 | 11:37 AM
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https://help.summitracing.com/knowle...SR-04891/en-us
ID chart
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Old Jan 23, 2025 | 12:09 AM
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Sorry to hear about the loss of your dad. Good luck finding out what exactly he had planned for the car - sounds like the makings of a great performer.
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Old Jan 23, 2025 | 04:39 AM
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I was going to DM you but it looks like these guys have you covered already.

What part of the country are you in? If you're in the northeast and need a hand sorting it out I've got too much free time and would be glad to help.
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Old Jan 24, 2025 | 12:54 PM
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Originally Posted by Ltngdrvr
Condolences on the loss of your dad, lost mine on Easter Sunday.
If it is a crate engine, they come from GM with a part ID tag/sticker that has the part number on it, so I would look for that first.
And, did your dad not keep any receipts for the parts he bought?
If you have a clear view of front of engine you can tell what size the engine is. It's a start.
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Old Jan 24, 2025 | 01:21 PM
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If untouched, yes. Otherwise it just tells you which block it originated as. It might be factory longblock crate engine
​​​​​.... Or it could be a Thompson 454.
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Old Jan 24, 2025 | 06:28 PM
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Condolences on the passing of your dad. My C5 was inherited from my dad, he passed Thanksgiving 2 years ago.
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Old Jan 25, 2025 | 12:48 AM
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Sorry about your dad passing. As to the motor my guess would be you have a phone you could snap a quick picture or two of the relevant areas mentioned above and post them here. The folks here could go a long way to helping you ID the motor if it is not too obscure or custom.
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