Can anyone explain the difference between a Z06 with engine code "Y" vs. engine code "E" in the 8th position on the VIN #? Was the one with "Y" a GM test car or something like that? Thanks.

 

according to the folloiwng thread, 'Y' is not a valid option for the 8th position.

http://forums.corvetteforum.com/show...&highlight=VIN

(edit: but you probably alread know that)

 

Here's the link for the car I am talking about. I'm thinking maybe it was a GM advertising vehicle, or something like that.

http://cgi.ebay.com/ebaymotors/ws/eB...9030931&rd=1,1

 

You're pretty close. "Y" was the engine code for the first 161 sequenced C6Z's. These were not originally sold to the public. As the listing says, it was a "pilot" [test] car.

 

So, there's nothing wrong with owning one of those early Z06's? Seems like it could end up being a good deal.

 

 

Well . . . I saw one of them being driven around the race track by a magazine guy back in September, 05 and he was not being gentle. It's hard to say where they've been. Of course, if you could get a really really cheap price on it then maybe the risk is worth while.

 

I would not touch something like that It all depends where she's been and how she was driven, and there is no way you can get the complete details. Good luck

 

But if it's warrantied for another 31,000 miles, I'm gonna abuse that car way more than anyone else has, I can promise that. Also, I've never been one to shy away from a car thats been used as it's intended, as long as it in good mechanical/visual shape and it's been maintained. I'd be willing to bet that the car has actually been well taken care of, aside from hard driving.

 

Like my mother used to say about some of the girls I used to date, "Don't touch that. You don't know where it's been". Seriously, if the deal's right, buy it.

 

How can you be sure of the mechanical conditions of the various drivetrain parts ? Don't tell me by visual inspection. Your wallet ... good luck

 

given that it's used with 'moderate' mileage and is 'demo'...
I think that car is worth 50k max.

 

No, actually GM's wallet for the next 31,000 miles. That's the entire point of a warranty. And furthermore, I think after an inspection and a spirited test drive it's pretty easy to tell whether the car is going to have problems or not.

 

Kenny Wallace is a former sponser, racer of the Corvette Challenge Corvettes. Upstanding guy. Lot of pull at GM. Corvette is a big part of his business. I'd feel very safe buying from Valley Chevrolet ! my .02. Save the Wave.>George

 

Really? If you can do that, I'm truly impressed . . .

 

here's the service history on the car--

Help
VIN : 1G1YY26YX65100132
VEHICLE INFORMATION
Merchandising Model : 1YY87 -2006 CORVETTE Z06 2 DOOR Warranty Start Date : 06/29/2005
BARS Order Type : 81 - DEALER USED CAR (CVMS USE)
Delivering Dealer : N/A Selling Source : N/A
Site Code : N/A
Business Associate Code : N/A
Service Contract :

No

Branded Title :

No

Warranty Block :

No

PDI Status :

Paid
REQUIRED FIELD ACTIONS
Type

Number

Description

Posted Date

Status
RC
05112
PAINTED ROOF ADHESIVE SEPARATION ��
N/A

Closed
RC
06041
BODY-COLOR ROOF ADHESIVE SEPARATION ��
11/14/2006

Open
RC
06092
OWNER MANUAL UPDATE - BRAKE WEAR- ** EXPIRES DECEMBER 31, 2006 ** ��
N/A

Closed
SERVICE INFORMATIONAL ITEMS
Vehicle Has No Current Record Of Outstanding Service Information
ON STAR AND XM SATELLITE RADIO INFORMATION
OnStar Equipped No OnStar Status N/A Refer to Help page for details or: http://www.onstarenrollment.com or (888)ONSTAR1 (888)667-8271. In Canada, http://onstar.enrollment.ca or (877)438-9677.
XM Equipped Yes XM Radio ID 63QX908H XM Status Inactive Refer to Help page for details or: http://www.gm.xmradio.com or (800)556-3600. In Canada, http:// xmradio.ca or (877)438-9677.
APPLICABLE WARRANTIES
Description

Effective Date

Effective Odometer

End Date

End Odometer
36/36000 BUMPER TO BUMPER
06/29/2005
0 miles
06/29/2008
36000 miles
72/100000 SHEET METAL COVERAGE RUST THROUGH
06/29/2005
0 miles
06/29/2011
100000 miles
96/80000 FEDERAL EMISSION CATALYTIC CONV. AND PCM
06/29/2005
0 miles
06/29/2013
80000 miles
36/36000 FEDERAL EMISSION
06/29/2005
0 miles
06/29/2008
36000 miles
CLAIM HISTORY
R.O Date

R.O Number

Type

Labor Operation

Odometer Reading
06/14/2006

249053

#
E4190 - TIE ROD END - RIGHT - REPLACE 5395 miles
06/14/2006

249053

#
H0120 - ROTOR ASSEMBLY - FRONT - RIGHT - REPLACE 5395 miles
06/14/2006

249053

#
H0121 - ROTOR ASSEMBLY - FRONT - LEFT - REPLACE 5395 miles
06/14/2006

249053

#
C4200 - CARPET, FLOOR - RIGHT - R&R OR REPLACE 5395 miles
06/14/2006

249053

#
H0042 - PADS, DISC BRAKE - FRONT - R&R OR REPLACE 5395 miles
06/14/2006

249053

#
H0043 - PADS, DISC BRAKE - REAR - R&R OR REPLACE 5395 miles
06/01/2006

248653

#
D9995 - CUSTOMER CONCERN NOT DUPLICATED 3823 miles
08/29/2005

241006

#
L2004 - EXHAUST SYSTEM - ALIGN 2712 miles
08/01/2005

691160

I
Z7000 - PRE-DELIVERY INSPECTION - BASE TIME 2 miles

 

^ Dang, where did you get all that? Also, what kind of retard would bid that car up to $60k+ (It's at $60,100)? Furthermore, the seller feels that isn't enough because the reserve isn't met. lol.

 

Looks like it might have been run hard on the track as allanlaw mentioned (brake pads and rotors shot at 5300 miles, rotor got so hot that it fried the boot on the tie rod end). Wonder how the boot on the left tie rod looks?

 

Thats a subject that I've never been able to get all the answers on. A while ago I saw a GM service bulletin that said its the same engine, just the code was changed. At the Bash in April of 05 I copied down the VIN # of half a dozen or so Z06's; naturally they were all Y codes. A very reliable source told me that the workers at the PBC in Wixom had to put in a lot of overtime in June 05, changing pistons in LS7's they had already built. This would coincide with the last minute delay in startup of customer order production (the first orders, first scheduled with June build dates, were delayed into July). If indeed there was a piston design change, obviously all the regular production cars got the later design and all had an E code. But by June there were over 100 "captured fleet" Z06's running all over the country with Y codes. If indeed there was a piston design change, I seriously doubt they would have pulled engines from built cars to change pistons. And some sources say the LS7 was originally to have forged pistons. Could this have been the change, or just a change in the cast piston design? (The GM parts book doesn't show different pistons for Y or E, but that doesn't mean much).
Has anybody else heard anything on this subject?

( the source stated that all LS7's built prior to 6/15/05 were torn down due to major changes to the pistons, but I'm unable to find out if that includes the engines that were already in cars; I doubt it, which makes me wonder if those are the Y code cars).

 

i have an early production fleet car. recently purchased from my local chevy dealer via GM Canada.
i know it has a replacement engine. tell me where to look for the number and i will advise what it is.

as far as buying a press car i had no qualms; GM Canada went over the car with a fine tooth comb; updated all sorts of things including the lower front valance that had a few scratches on it. so it has the new design. the car had 16000 km on it when we took over; it now has 28000 and zero problems.