Identification
Le Mans Master
Joined: Jan 2007
Posts: 5,485
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From: Peekskill NY
What year? There are many LT-1 specific parts, some not easy to see, that will tell you right away, besides the block codes.
These are from the black book.
Block codes for 1970-CTK,CTR,CTU,CTV
1971-CGY,CGZ(ZR-1)
1972-CKY, CKZ(ZR-1), CRS(interesting this code has auto tranny code though I thought you could not get an auto w/LT-1 option.), CRT
I'm sure more LT-1 owners will chime in.
Glenn
These are from the black book.
Block codes for 1970-CTK,CTR,CTU,CTV
1971-CGY,CGZ(ZR-1)
1972-CKY, CKZ(ZR-1), CRS(interesting this code has auto tranny code though I thought you could not get an auto w/LT-1 option.), CRT
I'm sure more LT-1 owners will chime in.
Glenn
Le Mans Master
Joined: Nov 2001
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From: LONG ISLAND
2025 C3 ('68-'73) of the Year Finalist - Unmodified
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I'm sorry for being the dumbest person on this site but I have my first C-3 and want to make sure it is a real LT1 as the person told me. Is there an ID plate that has all the information I need and where is it? How about the VIN? Please let me know when you get some time. Thanks.
I sure hope you don't find out any bad news, it's a bit too late now.
Thread Starter
Instructor
Joined: Feb 2010
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Identification
I'm sorry. The car is a 71 Brands Hatch Green, dark green interior. But where do I find this information? Is there a plate in an easy place to see?
Last edited by daxmann; Jul 1, 2010 at 08:45 AM.
Team Owner
Joined: Jun 2000
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From: Southbound
Cruise-In II Veteran
Nothing in the VIN will identify the original engine or whether the car is an actual LT-1.
You will find two numbers stamped on the pad on the block at the front of the right head. One stamp will identify the engine; the second stamp will be the VIN derivitive of the car the engine was originally installed in.
No AIR or AC on this particular car making the pad easier to see and read.
VIN plate is on the driver's windshield post and readable from outside the car.
Trim Tag is on the driver's door hinge post and will list the code for original paint and interior trim color. Time/Build code will be in the upper right hand corner of the tag and will show an alpha character for the month of assembly and a two digit number for the day of the month.
There was a strike in the fall of 1970 affecting 1971 model year production. No cars were built during October, 1970 and only a few in late November.
You will find two numbers stamped on the pad on the block at the front of the right head. One stamp will identify the engine; the second stamp will be the VIN derivitive of the car the engine was originally installed in.
No AIR or AC on this particular car making the pad easier to see and read.
VIN plate is on the driver's windshield post and readable from outside the car.
Trim Tag is on the driver's door hinge post and will list the code for original paint and interior trim color. Time/Build code will be in the upper right hand corner of the tag and will show an alpha character for the month of assembly and a two digit number for the day of the month.
There was a strike in the fall of 1970 affecting 1971 model year production. No cars were built during October, 1970 and only a few in late November.
Last edited by Easy Mike; Jul 1, 2010 at 09:07 AM.
Team Owner
Joined: Jul 1999
Posts: 26,545
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From: Huntersville NC
1971 LT-1 is relatively rare, so more valuable than a base engine car. That is why there is a financial incentive to take a base engine car and make it look like an LT-1. There are lots of fakes out there.
Beginning with the 1972 model year, corvettes included engine identifying information in the vin, so a 1972 LT-1 can be identified by the vin, but not a 1971.
Beginning with the 1972 model year, corvettes included engine identifying information in the vin, so a 1972 LT-1 can be identified by the vin, but not a 1971.
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Drifting
Joined: May 2006
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From: Circleville Ohio
Vader Vette
I'm sorry for being the dumbest person on this site but I have my first C-3 and want to make sure it is a real LT1 as the person told me. Is there an ID plate that has all the information I need and where is it? How about the VIN? Please let me know when you get some time. Thanks.
No question is to stupid or no person is the dumbest.
Welcome to the corvette forum sounds like your Going to need it.
Thread Starter
Instructor
Joined: Feb 2010
Posts: 205
Likes: 0
Car
Hi Alan
This is for a car I purchased last week. I got the following numbers off of the engine.
C11S105528 V1210CGZ
From trim tag
Trim 423 983 Paint
VIN
194371S105538
I think this is a real LT1 but if I'm wrong please let me know. Thanks.
This is for a car I purchased last week. I got the following numbers off of the engine.
C11S105528 V1210CGZ
From trim tag
Trim 423 983 Paint
VIN
194371S105538
I think this is a real LT1 but if I'm wrong please let me know. Thanks.
Last edited by daxmann; Jul 2, 2010 at 07:19 AM.
Le Mans Master
Joined: Jan 2007
Posts: 5,485
Likes: 7
From: Peekskill NY
Built in December 70.
Trim 423 983 Paint
Dark green int & Brands Hatch green ext.
Glenn
Race Director
Joined: Oct 2000
Posts: 12,681
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From: Shamong, NJ
The numbers are right, but without having it looked at by someone that knows what a true stamp pad looks like, it could still be a re-stamp.
V1210CGZ = "V" engine plant, where all small block Corvette engines are built. "1210" is the engine build date; "12" for Dec., "10" is the tenth day of the month. "CGZ" is the engine suffix code for a 1971 LT-1.
Trim 423 is Dark Green vinyl. Paint 983 is Brands Hatch Green.
From the VIN, the car is a coupe (the 67 in the VIN) and it was the 5,538 (105538) 1971 built. It would have been built about the about the first week of Jan. 71, which fits nicely with the 12-10 build date of the engine.
V1210CGZ = "V" engine plant, where all small block Corvette engines are built. "1210" is the engine build date; "12" for Dec., "10" is the tenth day of the month. "CGZ" is the engine suffix code for a 1971 LT-1.
Trim 423 is Dark Green vinyl. Paint 983 is Brands Hatch Green.
From the VIN, the car is a coupe (the 67 in the VIN) and it was the 5,538 (105538) 1971 built. It would have been built about the about the first week of Jan. 71, which fits nicely with the 12-10 build date of the engine.
Team Owner
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From: Southbound
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Le Mans Master
Joined: Jan 2007
Posts: 5,485
Likes: 7
From: Peekskill NY
Le Mans Master
Joined: Jan 2007
Posts: 5,485
Likes: 7
From: Peekskill NY
Glenn