P-Case 3789812 decoding - CorvetteForum - Chevrolet Corvette Forum Discussion


C1 & C2 Corvettes
General C1 Corvette & C2 Corvette Discussion, Technical Info, Performance Upgrades, Project Builds, Restorations
Sponsored by:
Sponsored by:

P-Case 3789812 decoding

Reply
 
 
 
Thread Tools Search this Thread
Old 10-12-2011, 05:47 PM   #1
SSmith1969
Junior Member
Thread Starter
 
Member Since: Aug 2009
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
Default P-Case 3789812 decoding

I got this years back when my uncle passed and can't figure this thing out.It is some kind of mutt.Casting # is 3789812 which i think is 62-64 only.However the casting date is K16 Nov.1 1966 i think.Scrubbed to look for the code but does't seem to have been stamped on the opposite side.Doesn't look to be posi anymore Ring gear is 3733908 9-37 4 69 for date and pinion 3733912 9-37 and 3 69 for date.So my question is could these all be over the counter parts? Should there be a code stamped still if they were.I know they were hard to see sometimes but I don't think this one got one.Any thoughts of what it might be worth as I think sooner or later I will sell it.Any help would be appreciated Thanks
If someone wants to see pictures I can email them I don't have enough skills to do them here
SSmith1969 is offline   Reply With Quote
Old 10-12-2011, 06:07 PM   #2
DZAUTO
CF Senior Member
 
Member Since: Mar 2001
Location: Mustang OK
Posts: 10,150
Thanked 399 Times in 222 Posts
Default

Yes, that is a service part, both the posi case and the ring & pinion gears.
The 812 cases were the LAST version, which was used during VERY LATE 61-64 production (VERY LATE 61-62 Vettes and -64 pass cars). Since there are no pictures, I can't tell if it has a posi or non-posi differential. The gears are 4.11------------------not a big demand for those anymore. If it does not have a posi unit, then the ONLY thing of significant value is the P case-------------------and that's not worth a whole lot since it was made AFTER regular production as a service part. For just a posi case, it has a fair value, but for the person looking for a correct dated case, 64 was the last time it was used on a production car (62 for Vettes).
If the P case was sold over the counter as just a bare case, then there would NOT be any stamped code on the pass side.

Tom Parsons
DZAUTO is online now   Reply With Quote
Old 10-12-2011, 06:14 PM   #3
SSmith1969
Junior Member
Thread Starter
 
Member Since: Aug 2009
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Thanks for the reply and info Tom it was very helpful!
SSmith1969 is offline   Reply With Quote
Old 10-12-2011, 10:22 PM   #4
DZAUTO
CF Senior Member
 
Member Since: Mar 2001
Location: Mustang OK
Posts: 10,150
Thanked 399 Times in 222 Posts
Default

I sent you a PM.

Tom Parsons
DZAUTO is online now   Reply With Quote
Old 10-12-2011, 10:35 PM   #5
SSmith1969
Junior Member
Thread Starter
 
Member Since: Aug 2009
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by DZAUTO View Post
I sent you a PM.

Tom Parsons
I emailed you back You must not have recieved it I will try to send again
SSmith1969 is offline   Reply With Quote
Old 10-13-2011, 07:53 AM   #6
DZAUTO
CF Senior Member
 
Member Since: Mar 2001
Location: Mustang OK
Posts: 10,150
Thanked 399 Times in 222 Posts
Default

I finally got it late.

Tom Parsons
DZAUTO is online now   Reply With Quote
Go Back   CorvetteForum - Chevrolet Corvette Forum Discussion >
Reload this Page
  • P-Case 3789812 decoding
  •  
     
    Reply

    Related Topics
    Thread Thread Starter Forum Replies Last Post
    Revelations about my 1957 Corvette engine!!!! 68hemi C1 & C2 Corvettes 29 02-19-2017 01:22 PM
    DIY: Door Sill Decal Removal and Installation of Carbon Fiber Protector Cyber2010 C6 Corvette General Discussion 10 12-29-2014 08:20 PM
    C-1 4.11 Posi cast#3789812 larrysgarage C1 & C2 Parts 6 02-25-2012 04:20 PM
    62 differential question 69ttop502 C1 & C2 Corvettes 15 01-27-2009 09:24 AM
    Looking for a Pig Solid327 C1 & C2 Parts 3 01-29-2004 02:02 PM


    Tags
    1969, 3733908, 3789812, 3rd, case, casting, chevolet, codes, corvette, decode, gear, gm, memeber, number, posi, positraction, ring, unit

    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 10:34 AM.


     
    • Ask a Question
      Get answers from community experts
    Question Title:
    Description:
    Your question will be posted in: