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Mystery engine C6 LS2 or ????

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Old Aug 27, 2011 | 03:27 PM
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Default Mystery engine C6 LS2 or ????

Hi,

This is my first post as I have just bought my first Vette a week ago. I thought i was purchasing a stock c6 2005 z51. Well, I knew it had aftermarket headers and exhaust as well as a short throw shifter, but that’s all that I could see/tell… So this weekend I went to get an oil change and the guy calls me over and says, “umm the oil filter won’t fit…” he showed me on the cpu where it said my vin# = c6 2005 and it should use a pf46 oil filter. I asked the guy what size came off of it and low and behold, it was a pf48… And yes, a pf48 fit back on it just fine. Maybe you guys can help me out in finding out what is going on here, but it is my understanding that the ls2 will not fit a pf48 oil filter therefore my engine must have been replaced with something else… Any thoughts?

the engine cover says LS2 but is there a stamp on the engine somewhere that can confirm what exactly it is?
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Old Aug 27, 2011 | 03:34 PM
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I think the LS2 started using the PF48 filter for the 2007 model yr.
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Old Aug 27, 2011 | 03:44 PM
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If you wanted to post your VIN we could verify that it is in fact a 2005. You can also just post the month and year of manufacture on the decal on the driver's side door.

On the oil filter, the 2005 Corvette should use a PF44 filter.

The 2006 LS2 uses a PF46 and the 2006 LS7 uses a PF48.

The 2007 LS2 uses the PF48 and the LS7 uses the PF48.

The 2008 LS3 uses the PF48 and the LS7 uses the UPF48R.

2009 LS3 uses the PF48. on the The LS7 uses the UPF48R and the LS9 uses the UPF48R.

2010 LS3 uses the PF48. The dry sump LS3 on the manual Grand Sport Coupe uses the UPF48R. The LS7 uses the UPF48R and the LS9 uses the UPF48R.

2011 LS3 uses the PF48. The dry sump LS3 on the manual Grand Sport Coupe uses the UPF48R. The LS7 uses the UPF48R and the LS9 uses the UPF48R.
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Old Aug 27, 2011 | 04:06 PM
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ok, 12/04 was the date and vin = 1G1YY24UX55111940

and if the engine has been replaced, how could I find out?
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Old Aug 27, 2011 | 04:11 PM
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Originally Posted by bfreeman
ok, 12/04 was the date and vin = 1G1YY24UX55111940

and if the engine has been replaced, how could I find out?
Well, That is clearly a 2005 car.

The VIN on the engine should match the VIN on the car. If it doesn't, it was likely replaced. The VIN stamp is on top of the block behind the driver's side valve cover.

The vehicle identification number (VIN) is located on the left side rear of the engine block (1) and is typically a nine digit number stamped or laser-etched onto the engine at the vehicle assembly plant.

The first digit identifies the division.
The second digit identifies the model year.
The third digit identifies the assembly plant.
The fourth through ninth digits are the last six digits of the VIN.
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Old Aug 27, 2011 | 04:25 PM
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As previously stated, the only LS2 engine that takes the 48 series filter is the MY2007. It looks like this 2005 car has a 2007 engine.
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Old Aug 27, 2011 | 04:43 PM
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The LS2 will have #243 casting number on the head. LS1 was 241 LS6 was 243 like the LS2.
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Old Aug 27, 2011 | 05:28 PM
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yeah, its a 243 (shows on the rear of the head), but I don't see how I can get a look at the vin short of pulling out the engine.
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Old Aug 27, 2011 | 05:31 PM
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I guess at this point i'm just worried about the resale value and true mileage of the car. I think your right gold, but now the question begging to be asked is why was it replaced and how could they replace the engine without reporting it to carfax.
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Old Aug 27, 2011 | 05:38 PM
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Originally Posted by bfreeman
I guess at this point i'm just worried about the resale value and true mileage of the car. I think your right gold, but now the question begging to be asked is why was it replaced and how could they replace the engine without reporting it to carfax.

If you bought a car to protect it's resale value, I think you have a screw loose.

Drive it like you stole it, and enjoy it.
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Old Aug 27, 2011 | 05:55 PM
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My 07 ls2 uses the PF48
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Old Aug 27, 2011 | 06:12 PM
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Originally Posted by bfreeman
I guess at this point i'm just worried about the resale value and true mileage of the car. I think your right gold, but now the question begging to be asked is why was it replaced and how could they replace the engine without reporting it to carfax.
You should probably be happy with the newer engine, as it obviously doesn't have the same miles as the odometer shows. However, it could have simply been an oil pan change and not the entire engine.

You can only confirm the block by the number on it per Talon90. You might be able to trace it back to the original owner who may have totalled the car. I'd also trace back the VIN to contact the previous owner, if you have concerns about other aspects of the engine, such as cam/heads. The dealer you got it from should know something too.

Carfax info is only as complete as the sources who input info, choose to be.
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Old Aug 27, 2011 | 07:48 PM
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Originally Posted by bfreeman
yeah, its a 243 (shows on the rear of the head), but I don't see how I can get a look at the vin short of pulling out the engine.
If you pull off the fuel rail cover you should be able to get in there with a utility mirror and find the VIN stamp.
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Old Aug 27, 2011 | 08:04 PM
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Alright guys, you have given me some great info, and quick too! Its really nice to be part of such a tight nit community. Hopefully someday i'll be able to return the favors. I'll try and get into contact with the previous owners and if all else fails, i'll whip out the ole utility mirror Talon.

And Rchbn, I do drive it like i stole it, I just want a chunk of change taken off of my next vette when the time comes can ya fault me for that?? lol

Rly, its just my first Vette (and Non 6 cylinder sports car) and I'm sure I'm just a little over worried about it. but mostly its curiosity.

Cheers guys!
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Old Aug 27, 2011 | 08:19 PM
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Since the filter mount is part of the pan, maybe it has a new oil pan that takes the newer filter.
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Old Aug 27, 2011 | 08:36 PM
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Originally Posted by HOXXOH
You should probably be happy with the newer engine, as it obviously doesn't have the same miles as the odometer shows.
Problem is, even though it may be a 2007 engine, it might have more miles on it than on the odometer.
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Old Aug 27, 2011 | 08:42 PM
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Hey Talon90, when I did the R8C on my '07, I personally saw them inscribing the VIN# just above the oil filter area on the block while on the assembly line. Now if the OP has a replacement engine, it might not have an inscription at all unless it came out of another car.
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Old Aug 27, 2011 | 08:48 PM
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Originally Posted by dgrant3830
Hey Talon90, when I did the R8C on my '07, I personally saw them inscribing the VIN# just above the oil filter area on the block while on the assembly line. Now if the OP has a replacement engine, it might not have an inscription at all unless it came out of another car.
Correct. The VIN is etched on each new Corvette engine on the assembly line just after it is hung for assembly. If the engine is new (crate motor) it likely won't have a VIN. If however, it was an engine that was taken out of another Corvette it would have an inscription that won't match. Either way, this would tell the OP if it is his original motor with potentially a new oil pan or if it is some other scenario.
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