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Old 07-11-2006, 11:37 AM   #1 (permalink)
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VIN number Question.

I remember reading somewhere that you could tell by the VIN number if a 98 is a 24v or a 12 valve... anyone know how? I think I remember it being a D somwhere in the VIN like the 6th or 8th diget...

Aaron
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Old 07-11-2006, 01:36 PM   #2 (permalink)
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8th digit - engine code
C 5.9L V6 diesel
D 5.9L I6 diesel
G 2.5L I4
P 3.3L V6 MPI
R 2.4L I4 MPI
T 5.2L V8 gas
W 8.0L V10
X 3.9L V6 EFI or MPI
Y 5.2L V8 EFI or MPI
Z 5.9L V8 EFI or MPI-LDC
3 3.0L V6 MPI
5 5.9L V8 HDC - EFI or MPI
6 5.9L I6 24-valve diesel
7 5.9L I6 24-valve HO diesel
8 5.9L V6 Turbo Diesel
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Old 07-11-2006, 01:58 PM   #3 (permalink)
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Great info... thanks
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Old 07-11-2006, 03:18 PM   #4 (permalink)
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More vin decoding info here
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Old 12-05-2008, 04:48 PM   #5 (permalink)
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On D 5.9L I6 diesel line, what does the I6 mean?
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Old 12-05-2008, 04:55 PM   #6 (permalink)
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On D 5.9L I6 diesel line, what does the I6 mean?
I6 meas Inline 6

On the subject of VIN numbers and 12 valvers, does anyone know how to do a VIN-number search anywhere besides Ebay?

Autotrader would be nice. I know you can do it at the dealer-only auctions like ADESA but they are dealer only, darn it.

And yes a D in the 8th position means 12 valve. If anyone sees a 1B7MF33D* for sale with a manual tranny lemme know please.
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Old 12-05-2008, 05:39 PM   #7 (permalink)
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Quote:
Originally Posted by trefftzs View Post
I remember reading somewhere that you could tell by the VIN number if a 98 is a 24v or a 12 valve... anyone know how? I think I remember it being a D somwhere in the VIN like the 6th or 8th diget...

Aaron
look at the engine bay and you should be able to distinctively tell if its a 12 or 24 valve by the injection pump and valve cover
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Old 12-05-2008, 08:40 PM   #8 (permalink)
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Originally Posted by 12valveterror View Post
look at the engine bay and you should be able to distinctively tell if its a 12 or 24 valve by the injection pump and valve cover
He may not be at the truck to do that though and the VIN method would be nice for that. Especially since the majority of the owners probably don't have a clue about the differences nor do they care.
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Old 12-05-2008, 08:58 PM   #9 (permalink)
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Originally Posted by mondtster View Post
He may not be at the truck to do that though and the VIN method would be nice for that. Especially since the majority of the owners probably don't have a clue about the differences nor do they care.
The VIN number is really useful if you're looking for a particular truck and looking through 100's of ads trying to find THE one.

Of course one look under the hood the p-pump and the individual valvecovers of the 12v are a dead giveaway...

One other way to tell the door badges say "Cummins Turbo Diesel" on a 12v and "Cummins 24v Turbo Diesel" on the 24v with some practice you can spot the difference from afar. I look for trucks with the black plastic mirrors going down the road and try to see if they are 12 or 24 valvers by that method just for fun.
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Old 12-05-2008, 09:04 PM   #10 (permalink)
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Quote:
Originally Posted by Outlawstorm View Post
8th digit - engine code
C 5.9L V6 diesel
D 5.9L I6 diesel
G 2.5L I4
P 3.3L V6 MPI
R 2.4L I4 MPI
T 5.2L V8 gas
W 8.0L V10
X 3.9L V6 EFI or MPI
Y 5.2L V8 EFI or MPI
Z 5.9L V8 EFI or MPI-LDC
3 3.0L V6 MPI
5 5.9L V8 HDC - EFI or MPI
6 5.9L I6 24-valve diesel
7 5.9L I6 24-valve HO diesel
8 5.9L V6 Turbo Diesel
C in the 8th of an '02 means HO (24v of course). '01 HO would be a 7.

D for a '97 or '98 is definately a 12 valver.
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