engine number decode - CorvetteForum - Chevrolet Corvette Forum Discussion


C3 Tech/Performance
V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette

engine number decode

Reply
 
 
 
Thread Tools Search this Thread
Old 09-13-2017, 10:59 AM   #1
riverracer au
CF Senior Member
Thread Starter
 
riverracer au's Avatar
 
Member Since: Oct 2010
Location: "ɹǝpunuʍop" Adelaide, Australia
Posts: 813
Thanked 18 Times in 14 Posts
Default engine number decode

looking at a engine stamp on friends vette.
it's a 1972 - 350 auto cali car, looks all original.



V05"I"7CDJ
my understanding of the decoding, the 4th figure should be a "1" not the letter "I"

CDJ 1972 350 base, tur 400, NB2 K 200 - Vette/SS

is this a bad stamp from factory, or a bad re-stamp?
the vin number is cleanly stamped and straight.
the scuff lines are from us cleaning the gunk off.
riverracer au is offline   Reply With Quote
Old 09-13-2017, 11:04 AM   #2
Easy Mike
CF Senior Member
Support Corvetteforum!
Cruise-In II Veteran
 
Easy Mike's Avatar
 
Member Since: Jun 2000
Location: The Bluegrass State
Posts: 34,992
Thanks: 0
Thanked 588 Times in 540 Posts
Default

Quote:
Originally Posted by riverracer au View Post
...my understanding of the decoding, the 4th figure should be a "1" not the letter "I"...
Alpha Is were used in place of numeric 1s at times, so that's not an issue. The overall configuration is strange, but that does not mean it's a restamp. I get the impression the usual gang stamp may not have been used.

Last edited by Easy Mike; 09-13-2017 at 11:06 AM.
Easy Mike is online now   Reply With Quote
Old 09-13-2017, 11:30 AM   #3
corvgreg
CF Senior Member
 
corvgreg's Avatar
 
Member Since: Mar 1999
Location: San Diego CA
Posts: 1,336
Thanks: 0
Thanked 21 Times in 21 Posts
Default

I would be more concerned if the vin stamp was similar to the engine code stamping. Can you see the broach marks? You can also check the casting number and date at the rear of the block. Date should be D or an early date E.
corvgreg is offline   Reply With Quote
Old 09-13-2017, 12:07 PM   #4
Alan 71
CF Senior Member
 
Alan 71's Avatar
 
Member Since: Sep 2006
Location: Westminster Maryland
Posts: 28,863
Thanks: 0
Thanked 2,248 Times in 1,991 Posts
Default

Hi r au,

Here's an example of a gang holder used, and PERHAPS how the individual stamps were stored (in a tray?), at Flint.

Looking at these photos you can see why the spacing and alignment of the characters that compose the engine stamping were TYPICALLY even.

It appears there may have been a gang holder for each engine suffix since the suffix is marked on the holder. That would mean that typically only the date character would need to be changed each day.

Regards,
Alan






Last edited by Alan 71; 09-13-2017 at 12:14 PM.
Alan 71 is offline   Reply With Quote
Old 09-13-2017, 05:29 PM   #5
caskiguy
CF Senior Member
Support Corvetteforum!
 
caskiguy's Avatar
 
Member Since: Nov 2016
Location: Sherman Oaks California
Posts: 631
Thanked 71 Times in 63 Posts
Default

Quote:
Originally Posted by riverracer au View Post
looking at a engine stamp on friends vette.
it's a 1972 - 350 auto cali car, looks all original.



V05"I"7CDJ
my understanding of the decoding, the 4th figure should be a "1" not the letter "I"

CDJ 1972 350 base, tur 400, NB2 K 200 - Vette/SS

is this a bad stamp from factory, or a bad re-stamp?
the vin number is cleanly stamped and straight.
the scuff lines are from us cleaning the gunk off.
Here's a picture from my 1970 Coupe/Auto.
caskiguy is offline   Reply With Quote
Old 09-13-2017, 06:18 PM   #6
maj75
CF Senior Member
 
Member Since: Jan 2007
Location: Lighthouse Point FL
Posts: 555
Thanked 33 Times in 23 Posts
Default

Don't think spacing would be off that much using the holder that Alan posted.
maj75 is offline   Reply With Quote
Go Back   CorvetteForum - Chevrolet Corvette Forum Discussion >
Reload this Page
  • engine number decode
  •  
     
    Reply

    Related Topics
    Thread Thread Starter Forum Replies Last Post
    another CE engine pigfarmer C3 General 2 02-25-2017 10:34 AM
    WTB driveshaft cdj46 C3 Parts for Sale/Wanted 5 07-09-2016 11:43 PM
    1966 Engine Stamping wvbuckshot Factory Correct Resto 6 12-28-2015 08:40 PM
    1965 matching numbers engine question roadking40 C1 & C2 Corvettes 5 12-12-2015 04:42 PM


    Thread Tools Search this Thread
    Search this Thread:

    Click for Advanced Search

    Posting Rules
    You may not post new threads
    You may not post replies
    You may not post attachments
    You may not edit your posts

    BB code is On
    Smilies are On
    [IMG] code is On
    HTML code is Off
    Trackbacks are Off
    Pingbacks are Off
    Refbacks are Off

    Forum Jump

    Sponsored Ads
    Vendor Directory

    All times are GMT -4. The time now is 01:35 PM.


    We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
     
    • Ask a Question
      Get answers from community experts
    Question Title:
    Description:
    Your question will be posted in: