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

Rear end numbers help

Thread Tools
 
Search this Thread
 
Old Oct 18, 2004 | 02:02 PM
  #1  
L71Maynard's Avatar
L71Maynard
Thread Starter
Instructor
15 Year Member
 
Joined: Jul 2004
Posts: 210
Likes: 0
From: Lakewood CO
Default Rear end numbers help

I have a '69 BBC. I have the tank sticker so I know the car came with 4.11 gears. I pulled the following numbers off the bottom of the rear end right before the end cap. If anyone can help me figure out what I have I would appreciate the assistance.

OJ143W9E1

I looked all through the Corvette By Numbers book and can't find anything close. I verified the numbers are stamped on there with a pencil to clean out the grooves.

Thanks,
Dave
Reply
Old Oct 18, 2004 | 02:13 PM
  #2  
Brutal64's Avatar
Brutal64
Burning Brakes
10 Year Member
 
Joined: Mar 2001
Posts: 1,171
Likes: 0
From: Thornton Co
Default

Dave-If I remember correctly there should be a two letter code stamped into the bottom of the pumpkin, back by the rear cover? That will tell you what ratio you should have in it. That doesn't mean that's what's in there now.
Reply
Old Oct 18, 2004 | 02:22 PM
  #3  
Mako72's Avatar
Mako72
Melting Slicks
20 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2004
Posts: 2,742
Likes: 843
From: Gulf of America
2023 C7 of the Year Finalist - Unmodified
2018 C3 of Year Finalist
Default

If original, a 4:11 ratio in '69 would start with the letters FB. My books only go up to 1972.
Reply
Old Oct 18, 2004 | 03:53 PM
  #4  
i885744's Avatar
i885744
Pro
 
Joined: Apr 2004
Posts: 687
Likes: 0
From: Atascadero Ca
Default

you got the correct numbers i think. I've got a book somewhere on the garage shelves that will tell you, I'll let ya know as soon as i find it.
Reply
Old Oct 18, 2004 | 08:16 PM
  #5  
i885744's Avatar
i885744
Pro
 
Joined: Apr 2004
Posts: 687
Likes: 0
From: Atascadero Ca
Default

ok, found the book. It looks like your axle was replaced at one time or another.

OJ 1978 or 1979 3.70:1 ratio positraction corvette
14 Fourteenth day
3 Third Month, March
W Warren, Michigan Plant
9E1 is a series number.
Reply
Old Oct 18, 2004 | 10:15 PM
  #6  
Lotus76's Avatar
Lotus76
Pro
20 Year Member
 
Joined: Mar 2004
Posts: 584
Likes: 0
From: Okemos MI
Default

Originally Posted by i885744
ok, found the book. It looks like your axle was replaced at one time or another.

OJ 1978 or 1979 3.70:1 ratio positraction corvette
14 Fourteenth day
3 Third Month, March
W Warren, Michigan Plant
9E1 is a series number.
As log as you have the book out
Can you tell me if this is a 69 3:55 2CAZ111169

Thanks
John
Reply
Old Oct 18, 2004 | 10:23 PM
  #7  
corvgreg's Avatar
corvgreg
Emerging Vendor
25 Year Member
Conversation Starter
All Eyes On Me
Photogenic
 
Joined: Mar 1999
Posts: 1,599
Likes: 114
From: San Diego CA
Default

The CAZ is a 3.55 from a 1970 Vette with a Nov. 69 date.

Greg
Reply
Old Oct 18, 2004 | 11:01 PM
  #8  
Lotus76's Avatar
Lotus76
Pro
20 Year Member
 
Joined: Mar 2004
Posts: 584
Likes: 0
From: Okemos MI
Default

Originally Posted by corvgreg
The CAZ is a 3.55 from a 1970 Vette with a Nov. 69 date.

Greg
Thanks Greg.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Oct 19, 2004 | 05:58 PM
  #9  
L71Maynard's Avatar
L71Maynard
Thread Starter
Instructor
15 Year Member
 
Joined: Jul 2004
Posts: 210
Likes: 0
From: Lakewood CO
Default

Thanks for the help!! I was looking at the other years last night and it finally hit me that it was probably that!

Dave
Reply
Old Oct 19, 2004 | 06:05 PM
  #10  
73 Vet's Avatar
73 Vet
Racer
 
Joined: Jan 2004
Posts: 377
Likes: 1
From: Anchorage Alaska
Default

Originally Posted by corvgreg
The CAZ is a 3.55 from a 1970 Vette with a Nov. 69 date.

Greg
corvgreg,

Where did you find that information? Do you have all numbers for 1973?

Thank you.
Reply
Old Oct 19, 2004 | 06:26 PM
  #11  
L71Maynard's Avatar
L71Maynard
Thread Starter
Instructor
15 Year Member
 
Joined: Jul 2004
Posts: 210
Likes: 0
From: Lakewood CO
Default

For a '73:

AA = 3.55
AB = 3.70
AC = 4.11
AW = 3.08
AX = 3.36
LR = 3.36

Dave
Reply
Old Oct 19, 2004 | 07:11 PM
  #12  
dragonracer's Avatar
dragonracer
Instructor
 
Joined: Oct 2004
Posts: 149
Likes: 0
From: Milwaukie OR
Default

Originally Posted by L71Maynard
For a '73:

AA = 3.55
AB = 3.70
AC = 4.11
AW = 3.08
AX = 3.36
LR = 3.36

Dave
How about those 69 codes....i can find all kinds of casting #'s , so if I ever find it I would like to be able to decode it Thanx


Reply

Get notified of new replies

To Rear end numbers help





All times are GMT -4. The time now is 07:12 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE