C3 General General C3 Corvette Discussion not covered in Tech
Sponsored by:
Sponsored by:

Rpo code help

Thread Tools
 
Search this Thread
 
Old Jan 10, 2012 | 02:44 AM
  #1  
marshal135's Avatar
marshal135
Thread Starter
Safety Car
10 Year Member
Veteran: Marine Corps
Conversation Starter
Liked
 
Joined: Sep 2011
Posts: 4,121
Likes: 1,231
From: Madeira Beach, FL
2024 C8 of the Year Finalist - Unmodified
2024 C2 of the Year Finalist - Unmodified
2023 C2 of the Year Finalist - Unmodified
2020 C3 of the Year Finalist - Unmodified
Default Rpo code help

Hello everyone,
from my tank sticker I'm trying to find my rear gear ratio.
What ratio was 02G81CA?
I know it was a posi traction (G81)
Not sure what the CA equates to in a ratio.
I just can't read the type after posi traction ......
I know when its warmer I can climb underneath and
get the 2 letter code.
I also thought the tank sticker had it listed.
Any one with same or that knows can you let me know?
Thanks,
Marshal
Reply
Old Jan 10, 2012 | 04:25 AM
  #2  
hunt4cleanair's Avatar
hunt4cleanair
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2002
Posts: 5,236
Likes: 898
From: Myrtle Beach SC
Default

Originally Posted by marshal135
Hello everyone,
from my tank sticker I'm trying to find my rear gear ratio.
What ratio was 02G81CA?
I know it was a posi traction (G81)
Yes...G81 is the RPO for positraction. The gear would have been an additional RPO and should be listed on your build sheet. I believe it would have been listed above the G81 RPO


Not sure what the CA equates to in a ratio.
CA is the exception control letter (ECL) and provided the factory worker with additional part selection for a particular RPO...as I recall. CA was probably called out for a particular gear ratio but you still need the gear RPO

I just can't read the type after posi traction ......
AXLE

I know when its warmer I can climb underneath and
get the 2 letter code.
You must be in Alaska!
Reply
Old Jan 11, 2012 | 01:39 PM
  #3  
Easy Mike's Avatar
Easy Mike
Team Owner
Supporting Lifetime
20 Year Member
 
Joined: Jun 2000
Posts: 38,923
Likes: 1,482
From: Southbound
Cruise-In II Veteran
Default

On the same line, out to the right of the 02G81CA code, your should see POSITRACTION AXLE and the ratio listed. Might be difficult to read, but it should be there.

It's on this one, but a little hard to read. 3.08:1

Last edited by Easy Mike; Jan 11, 2012 at 01:46 PM.
Reply
Old Jan 11, 2012 | 07:14 PM
  #4  
marshal135's Avatar
marshal135
Thread Starter
Safety Car
10 Year Member
Veteran: Marine Corps
Conversation Starter
Liked
 
Joined: Sep 2011
Posts: 4,121
Likes: 1,231
From: Madeira Beach, FL
2024 C8 of the Year Finalist - Unmodified
2024 C2 of the Year Finalist - Unmodified
2023 C2 of the Year Finalist - Unmodified
2020 C3 of the Year Finalist - Unmodified
Default

Mike
Thanks that is what I was hoping someone here could verify.
I figured it for 3.08:1 because at 2000 rpms I'm at 50 mph in 4th gear on an M20 trans.
Life just got good
Marshal
Reply

Get notified of new replies

To Rpo code help





All times are GMT -4. The time now is 04:27 AM.

story-0
2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

Slideshow: Is the 2027 Chevrolet Silverado 1500 the best Silverado yet?

By Michael S. Palmer | 2026-06-16 08:01:12


VIEW MORE
story-1
5 Best & 5 Worst Corvette Daily Drivers

Slideshow: 5 best and 5 worst Corvette daily drivers

By Joe Kucinski | 2026-06-15 10:32:13


VIEW MORE
story-2
The Headlights of Every Corvette Generation Explained

Slideshow: The headlights of every Corvette generation explained

By Joe Kucinski | 2026-06-15 10:17:14


VIEW MORE
story-3
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-4
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-5
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-6
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-7
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-8
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-9
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